2016 Cadillac Ats Cooling System Parts

Engine:

Showing parts for every engine. Select an engine to see only what fits.

This page lists 166 cooling system parts for the 2016 Cadillac Ats, across 35 part types, covering all 4 engine options (2.0L L4 Turbocharged, 2.5L L4, 3.6L V6 and 3.6L V6 Turbocharged). Every part shows its brand, manufacturer part number and fitment notes.

On the 2016 Cadillac Ats, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses. 39 parts of the 166 listed are Coolant / Antifreeze (16 parts), Coolant Hose / Pipe (13 parts) and Radiator Fan Assembly (10 parts). The other 32 part types cover the remaining 127 parts.

Coolant / Antifreeze

Compatible With All Colors

Brand Part Number Markets Notes Buy
PRESTONE Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged AF3055
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Prime YellowAll Vehicles
Fitment notes — PRESTONE AF3055
Prime YellowAll VehiclesExtended Life55 GAL DrumConcentratePrime® Extended Life All Makes All Models
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Economy

Brand Part Number Markets Notes Buy
FVP Popular Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged MV5050GAL
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Extended LifeAll Makes / All Models
Fitment notes — FVP MV5050GAL
Extended LifeAll Makes / All Models1 Gallon
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PEAK Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged BQA1GAL
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Blue Mountain Long LifeAll Vehicle
Fitment notes — PEAK BQA1GAL
Blue Mountain Long LifeAll Vehicle1 Gallon
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PRESTONE Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged AF3100
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Prime Yellow - All VehiclesExtended Life
Fitment notes — PRESTONE AF3100
Prime Yellow - All VehiclesExtended Life1 Gallon
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VALVOLINE Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged 719009
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Multi-Vehicle Yellow1 Gallon
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Premium

Brand Part Number Markets Notes Buy
PRESTONE Popular Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged AF2100
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
All Vehicles10yr/300k mi
Fitment notes — PRESTONE AF2100
All Vehicles10yr/300k mi1 GallonExtended Life
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PEAK Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged PKP1GAL
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
All Vehicles Antifreeze1 Gallon
Fitment notes — PEAK PKP1GAL
All Vehicles Antifreeze1 GallonPREMIUM1 GALLON10X MORE SCALE FIGHTING INHIBITORS10 YEAR/300K MILES
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PEAK Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged PXA1GAL
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Global Lifetime1 Gallon
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PRESTONE Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged AFMAX
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Max Universal1 Gallon
Fitment notes — PRESTONE AFMAX
Max Universal1 Gallon15 Year/350k Miles
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Standard Replacement

Brand Part Number Markets Notes Buy
ACDELCO Popular Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged 105027
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
DEX-Cool Extended LifeDexcool (with DE-Ionized Water) (with Bitterant) 1 Gallon
Fitment notes — ACDELCO 105027
DEX-Cool Extended LifeDexcool (with DE-Ionized Water) (with Bitterant) 1 GallonPremix1 Gallon GM Original EquipmentOrange
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VALVOLINE Popular Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged ZXEL1
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Dex-Cool Orange1 Gallon
Fitment notes — VALVOLINE ZXEL1
Dex-Cool Orange1 GallonOAT
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AISIN Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged ACD005
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
OrangeOAT
Fitment notes — AISIN ACD005
OrangeOAT
(Type: Prediluted)
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FVP Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged DEX5050GAL
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Extended Life Blend1 Gallon
Fitment notes — FVP DEX5050GAL
Extended Life Blend1 GallonOrangeOAT
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PRESTONE Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged AF3400
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Prime OrangeOrange Compatible
Fitment notes — PRESTONE AF3400
Prime OrangeOrange CompatibleExtended Life1 Gallon ConcentrateOAT
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PRESTONE Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged AF850
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
DEX-Cool Extended Life1 Gallon
Fitment notes — PRESTONE AF850
DEX-Cool Extended Life1 GallonOrangeOAT
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VALVOLINE Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged 888374
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
American Vehicle Orange1 Gallon
Fitment notes — VALVOLINE 888374
American Vehicle Orange1 Gallon
(Type: Prediluted)
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This table covers the engine coolants and antifreeze formulations specified for this cooling system. Typical signs include a rising temperature gauge, rusty or sludged coolant, or a heater that blows cold. Use the chemistry named in the notes. Mixing silicate, OAT and HOAT formulas can gel in the radiator.

Coolant Air Bleed Hose / Pipe

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 2.5L L4 12683454
🇺🇸 US 🇨🇦 CA
4-Door SedanBreather Pipe
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GM GENUINE Fits: 3.6L V6 12653191
🇺🇸 US 🇨🇦 CA
without CLAMP
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GM GENUINE Fits: 3.6L V6 12717142
🇺🇸 US 🇨🇦 CA
Frontwith Seal, Hose, and Fasteners
Fitment notes — GM GENUINE 12717142
Frontwith Seal, Hose, and Fasteners13MM Long From End of Pipe To O-ring Bevel2nd DesignBreather Pipe
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GM GENUINE Fits: 3.6L V6 12679080
🇺🇸 US 🇨🇦 CA
Includes Bolts
Fitment notes — GM GENUINE 12679080
Includes Bolts
Retainers and Seal7MM Long To End of Pipe To O-ring Bevel1st DesignBreather Pipe
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This table covers the Coolant Air Bleed Hose pipes.

Coolant Hose / Pipe

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 2.5L L4 12627054
🇺🇸 US 🇨🇦 CA
Thermostat To Pipe4-door Sedan
Fitment notes — GM GENUINE 12627054
Thermostat To Pipe4-door Sedan12MM RADIUS
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GM GENUINE Popular Fits: 3.6L V6 Turbocharged 84128680
🇺🇸 US 🇨🇦 CA
InletIntercooler Coolant Hose
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GM GENUINE Popular Fits: 3.6L V6 Turbocharged 84184771
🇺🇸 US 🇨🇦 CA
Expansion Tank Inlet
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ACDELCO Fits: 3.6L V6 Turbocharged 12705971
🇺🇸 US 🇨🇦 CA
GM Original EquipmentPipe
Fitment notes — ACDELCO 12705971
GM Original EquipmentPipe
Outlet
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CONTINENTAL Fits: 2.5L L4 65016
🇺🇸 US 🇨🇦 CA
Hy-T Red Heater
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GM GENUINE Fits: 2.5L L4 12679317
🇺🇸 US 🇨🇦 CA
4-Door SedanThermostat Bypass
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GM GENUINE Fits: 2.5L L4 12670936
🇺🇸 US 🇨🇦 CA
PipeMounting Bracket Included: YES
Fitment notes — GM GENUINE 12670936
PipeMounting Bracket Included: YES
InletSedan
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GM GENUINE Fits: 2.5L L4 22908201
🇺🇸 US 🇨🇦 CA
Expansion Tank InletSedan
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GM GENUINE Fits: 3.6L V6 84016173
🇺🇸 US 🇨🇦 CA
Hose Only
Fitment notes — GM GENUINE 84016173
Hose Only
Expansion Tank Inlet
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GM GENUINE Fits: 3.6L V6 12662507
🇺🇸 US 🇨🇦 CA
Oil Cooler InletRWD
Fitment notes — GM GENUINE 12662507
Oil Cooler InletRWDEngine Oil Cooling System (KC4)
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GM GENUINE Fits: 3.6L V6 Turbocharged 84128687
🇺🇸 US 🇨🇦 CA
LowerMain Radiator
Fitment notes — GM GENUINE 84128687
LowerMain RadiatorLTR To RADIntercooler Coolant Hose
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GM GENUINE Fits: 3.6L V6 Turbocharged 84128682
🇺🇸 US 🇨🇦 CA
OutletIntercooler Coolant Hose
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GM GENUINE Fits: 3.6L V6 Turbocharged 84128685
🇺🇸 US 🇨🇦 CA
LowerMain Radiator
Fitment notes — GM GENUINE 84128685
LowerMain RadiatorLTR to LTRIntercooler Coolant Hose
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This table covers the hard pipes and extra hoses in the coolant circuit.

Coolant Hose / Pipe Seal

Brand Part Number Markets Notes Buy
ELRING Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged 943630
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
FrontCrankcase
Fitment notes — ELRING 943630
FrontCrankcaseCoolant Pipe
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FEL-PRO Fits: 2.5L L4 36156
🇺🇸 US 🇨🇦 CA
Thermostat Bypass Pipe Seal
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GM GENUINE Fits: 2.5L L4 12627055
🇺🇸 US 🇨🇦 CA
4-Door SedanSingle Use
Fitment notes — GM GENUINE 12627055
4-Door SedanSingle UseThermostat Bypass Pipe Seal
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GM GENUINE Fits: 3.6L V6 12659280
🇺🇸 US 🇨🇦 CA
Rim Shape: Oval
Fitment notes — GM GENUINE 12659280
Rim Shape: Oval
Turbocharger Intercooler Tube To Turbocharger IntercoolerIntercooler Tube
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GM GENUINE Fits: 3.6L V6 Turbocharged 12623519
🇺🇸 US 🇨🇦 CA
Color: Red
Fitment notes — GM GENUINE 12623519
Color: Red
OutletRadiator Pipe
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GM GENUINE Fits: 3.6L V6 Turbocharged 12640401
🇺🇸 US 🇨🇦 CA
Turbocharger Intercooler Tube To Turbocharger IntercoolerIntercooler Tube
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MAHLE / CLEVITE Fits: 2.5L L4 C33470
🇺🇸 US 🇨🇦 CA
Steel
Fitment notes — MAHLE / CLEVITE C33470
Steel
Water Bypass Seal
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This table covers the seals at the Coolant Hose / Pipe. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.

Coolant Hose Connector / Flange

Brand Part Number Markets Notes Buy
FOUR SEASONS Fits: 3.6L V6, 3.6L V6 Turbocharged 86373
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Water Inlet
Fitment notes — FOUR SEASONS 86373
Water Inlet
Inlet
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GM GENUINE Fits: 3.6L V6, 3.6L V6 Turbocharged 23333192
🇺🇸 US 🇨🇦 CA
Performance or Premium3 PORT TEE CONNECTOR
Fitment notes — GM GENUINE 23333192
Performance or Premium3 PORT TEE CONNECTOR
3 PORT TEE CONNECTOR
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This table covers the Coolant Hose Connector flanges.

Coolant Hose Connector / Flange Seal

Brand Part Number Markets Notes Buy
ELRING Fits: 3.6L V6 237180
🇺🇸 US 🇨🇦 CA
Engine BlockInlet Flange Seal
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This table covers the seals at the Coolant Hose Connector / Flange. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.

Coolant Pipe Gasket

Brand Part Number Markets Notes Buy
AJUSA Fits: 3.6L V6 Turbocharged 01154600
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
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This table covers the gaskets that seal the Coolant Pipe. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.

Coolant Reservoir

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged 22948113
🇺🇸 US 🇨🇦 CA
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GPD Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged 2411335
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
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This table covers the overflow / expansion tanks that hold extra coolant.

Coolant Reservoir Cap

Brand Part Number Markets Notes Buy
MOTORAD Popular Fits: 3.6L V6, 2.5L L4, 3.6L V6 Turbocharged T62
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Standard
Fitment notes — MOTORAD T62
Standard
Relief Pressure 20 lbs
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ACDELCO Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged 12R05
🇺🇸 US 🇨🇦 CA
Professional
Fitment notes — ACDELCO 12R05
Professional
Relief Pressure 20 Pound
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AUTOTECNICA Fits: 3.6L V6 GM0714619
🇺🇸 US 🇨🇦 CA
Diameter: 45mmPressure Rating: 20psi
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CALORSTAT Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged RC0144
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Maximum Pressure Rating: 20.0 PS
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GATES Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged 31569
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
OE Type
Fitment notes — GATES 31569
OE Type
20 psi Pressure Rating
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This table covers the caps on the overflow / expansion tank. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable.

Coolant Reservoir Clamp

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 Turbocharged 90572587
🇺🇸 US 🇨🇦 CA
M15X12
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This table covers the Coolant Reservoir clamps.

Cooling Fan Control Module

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 1581991
🇺🇸 US 🇨🇦 CA
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SHEE-MAR Fits: 3.6L V6, 3.6L V6 Turbocharged SM1270
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
OE Module
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STANDARD MOTOR PRODUCTS Fits: 3.6L V6, 3.6L V6 Turbocharged RY1941
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
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WELLS Fits: 3.6L V6, 3.6L V6 Turbocharged 6H1494
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
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This table covers the Cooling Fan control modules.

Cooling System Tester Adapter

Brand Part Number Markets Notes Buy
GATES Fits: 3.6L V6, 3.6L V6 Turbocharged 31391
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Cooling System PressureRadiator Cap
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MOTORAD Fits: 3.6L V6, 3.6L V6 Turbocharged 3128
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
StandardRadiator Cap Adapter
Fitment notes — MOTORAD 3128
StandardRadiator Cap Adapter
Cooling System PressureRadiator Cap Adapter
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MOTORAD Fits: 3.6L V6, 3.6L V6 Turbocharged 3127
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Standard
Fitment notes — MOTORAD 3127
Standard
Cooling System Pressure
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This table covers the adapters used to pressure-test this cooling system.

Hose Clamp

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 3.6L V6 Turbocharged 11570871
🇺🇸 US 🇨🇦 CA
Gray
Fitment notes — GM GENUINE 11570871
Gray
LowerM23X12Radiator Hose
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GM GENUINE Fits: 3.6L V6 13162312
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 13162312
Black
Lower42MM IDRadiator Hose
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GM GENUINE Fits: 3.6L V6 90572587
🇺🇸 US 🇨🇦 CA
Fits M15X12Air Bleed Hos
Fitment notes — GM GENUINE 90572587
Fits:
M15X12Air Bleed Hos
or:
M15X12Reservoir Inlet Hose
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GM GENUINE Fits: 3.6L V6, 3.6L V6 Turbocharged 11603426
🇺🇸 US 🇨🇦 CA
Fits Lower42mm Diameter X 15 Wide
Fitment notes — GM GENUINE 11603426
Fits:
Lower42mm Diameter X 15 WideRadiator Hose
or:
Upper42mm Diameter X 15 WideRadiator Hose
Lower42mm Diameter X 15 WideRadiator Hose
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GM GENUINE Fits: 3.6L V6 Turbocharged 90572594
🇺🇸 US 🇨🇦 CA
27 DiameterIntercooler Hose
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GM GENUINE Fits: 3.6L V6 Turbocharged 11547681
🇺🇸 US 🇨🇦 CA
Fits LowerM37X15
Fitment notes — GM GENUINE 11547681
Fits:
LowerM37X15Radiator Hose
or:
UpperM37X15Radiator Hose
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GM GENUINE Fits: 3.6L V6 Turbocharged 11611503
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 11611503
Black
M27X12Intercooler Hose
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This table covers the Hose clamps.

Intercooler

Economy

Brand Part Number Markets Notes Buy
TECHPRO Fits: 3.6L V6 Turbocharged GM3012113
🇺🇸 US 🇨🇦 CA
Fits VSedanor V
Fitment notes — TECHPRO GM3012113
Fits:
VSedanor VCoupe
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Standard Replacement

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 3.6L V6 Turbocharged 84510353
🇺🇸 US 🇨🇦 CA
Inlet Outside Diameter (mm): 15.75 mm
Fitment notes — GM GENUINE 84510353
Inlet Outside Diameter (mm): 15.75 mm
Heat Exchanger
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GM GENUINE Fits: 3.6L V6 Turbocharged 12640408
🇺🇸 US 🇨🇦 CA
without FASTENERS
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GM GENUINE Fits: 3.6L V6 Turbocharged 23477181
🇺🇸 US 🇨🇦 CA
Inlet Outside Diameter (mm): 22.3 mm
Fitment notes — GM GENUINE 23477181
Inlet Outside Diameter (mm): 22.3 mm
Heat Exchanger
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Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 3.6L V6 Turbocharged, 3.6L V6 CAC10
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Charge Air Cooler
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GPD Fits: 3.6L V6 Turbocharged 2711569
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
CenterAuxiliary
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This table covers the intercoolers that cool turbo or supercharger charge air.

Intercooler Air Hose / Pipe

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 Turbocharged 12672014
🇺🇸 US 🇨🇦 CA
Air Inlet (Left)2nd Design
Fitment notes — GM GENUINE 12672014
Air Inlet (Left)2nd Design2ND DES PIPE USE VALVE 12663589
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GM GENUINE Fits: 3.6L V6 Turbocharged 12672017
🇺🇸 US 🇨🇦 CA
PipeMounting Hardware Included: No
Fitment notes — GM GENUINE 12672017
PipeMounting Hardware Included: No
Air Inlet (Right)
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GM GENUINE Fits: 3.6L V6 Turbocharged 12701770
🇺🇸 US 🇨🇦 CA
End 1 Inside Diameter (In): 1.71 In
Fitment notes — GM GENUINE 12701770
End 1 Inside Diameter (In): 1.71 In
Leftwith Clamps
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This table covers the Intercooler Air Hose pipes.

Intercooler Gasket

Brand Part Number Markets Notes Buy
ELRING Fits: 3.6L V6, 3.6L V6 Turbocharged B18110
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
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GM GENUINE Fits: 3.6L V6 12652017
🇺🇸 US 🇨🇦 CA
Material: Fluorocarbon
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This table covers the gaskets that seal the Intercooler. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.

Intercooler Hose / Pipe Bracket

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 Turbocharged 84399881
🇺🇸 US 🇨🇦 CA
RightTO FENDER
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This table covers the brackets that mount the Intercooler Hose / Pipe. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners.

Radiator

Economy

Brand Part Number Markets Notes Buy
GPD Fits: 3.6L V6 13784C
🇺🇸 US 🇨🇦 CA
Auxiliary RadiatorTurbo Intercooler
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Standard Replacement

Brand Part Number Markets Notes Buy
CSF Popular Fits: 3.6L V6 3904
🇺🇸 US 🇨🇦 CA
with Quick-Connect Oil Cooler Fittings. Upgraded Core. 11% Thicker 30mm vs OEM 27mm
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TYC Popular Fits: 3.6L V6 13589
🇺🇸 US 🇨🇦 CA
PRIMARY
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AGILITY Fits: 3.6L V6 8013589
🇺🇸 US 🇨🇦 CA
MAIN RADIATOR
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GM GENUINE Fits: 3.6L V6 86551902
🇺🇸 US 🇨🇦 CA
Transmission Oil Cooler Fitting Type: Quick Connect
Fitment notes — GM GENUINE 86551902
Transmission Oil Cooler Fitting Type: Quick Connect
Fits:
8 speed Automatic trans.GSR 27MMwith In-Tank Coolerwithout SensorExc. Extra Capacity Cooling (V03)with RPO Code ACV8
or:
Premium8 speed Automatic trans.GSR 27MMwith In-Tank Coolerwithout SensorExtra Capacity Cooling (V03)Exc. Track Performance Sales Package (Y4Q)with RPO Code ACV8
or:
RWDPremium8 speed Automatic trans.GSR 27MMwith In-Tank Coolerwithout SensorExtra Capacity Cooling (V03), Track Performance Sales Package (Y4Q)with RPO Code ACV8
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KOYORAD Fits: 3.6L V6 A13598
🇺🇸 US 🇨🇦 CA
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KOYORAD Fits: 3.6L V6 A13653
🇺🇸 US 🇨🇦 CA
Intercooler Radiator
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OSC Fits: 3.6L V6 13589
🇺🇸 US 🇨🇦 CA
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UAC Fits: 3.6L V6 RA13589C
🇺🇸 US 🇨🇦 CA
Fits or Luxury or Performance
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This table covers the radiators that dump engine heat to airflow through the core. Typical signs include overheating in traffic, a wet core, or coolant that disappears with no puddle. Replace the cap if it cannot hold the rated pressure, and bleed the system after the swap.

Radiator Cap

Brand Part Number Markets Notes Buy
ACDELCO Fits: 3.6L V6, 3.6L V6 Turbocharged RC117
🇺🇸 US 🇨🇦 CA
GM Original Equipment
Fitment notes — ACDELCO RC117
GM Original Equipment
Service Port Cap @ Tank
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ACDELCO Fits: 3.6L V6, 3.6L V6 Turbocharged RC115
🇺🇸 US 🇨🇦 CA
GM Original EquipmentIncludes Label
Fitment notes — ACDELCO RC115
GM Original EquipmentIncludes Label
20 PSI
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This table covers the caps that hold system pressure at the radiator or reservoir neck. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable.

Radiator Drain Petcock

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6, 3.6L V6 Turbocharged 22887095
🇺🇸 US 🇨🇦 CA
Includes O-Ring
View on
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This table covers the petcocks used to drain the radiator.

Radiator Fan Assembly

Economy

Brand Part Number Markets Notes Buy
DORMAN Fits: 3.6L V6 Turbocharged 621984
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
View on
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GPD Fits: 3.6L V6 2812120
🇺🇸 US 🇨🇦 CA
with Heavy Duty Coolingwith 4 Pin Connector
View on
Amazon
GPD Fits: 3.6L V6 Turbocharged 2812444
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
View on
Amazon
TECHPRO Fits: 3.6L V6 Turbocharged GM3115292
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
View on
Amazon
VARIOUS MFR Fits: 3.6L V6 GM3115280
🇺🇸 US 🇨🇦 CA
Coupewith Engine Oil Cooler
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 3.6L V6 Turbocharged 1581927
🇺🇸 US 🇨🇦 CA
View on
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TYC Popular Fits: 3.6L V6, 3.6L V6 Turbocharged 624510
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Does Not Include Fan Control Module
Fitment notes — TYC 624510
Does Not Include Fan Control Module
with Engine Oil Coolerwith 4 Pin Connector
View on
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GM GENUINE Fits: 3.6L V6 1581865
🇺🇸 US 🇨🇦 CA
Extra Capacity Cooling (V03)600 W ECM MOTOR
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UAC Fits: 3.6L V6 Turbocharged FA50792C
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Radiator-Condenser Fan Assembly
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VDO / CONTINENTAL Fits: 3.6L V6 FA72120
🇺🇸 US 🇨🇦 CA
with 600 Watt Motor
View on
Amazon

This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator.

Radiator Hose

Brand Part Number Markets Notes Buy
GATES Popular Fits: 3.6L V6 52289
🇺🇸 US 🇨🇦 CA
Molded
Fitment notes — GATES 52289
Molded
Upper
View on
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GM GENUINE Popular Fits: 3.6L V6 84016171
🇺🇸 US 🇨🇦 CA
Upper
View on
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ACDELCO Fits: 3.6L V6 84133465
🇺🇸 US 🇨🇦 CA
GM Original Equipment
Fitment notes — ACDELCO 84133465
GM Original Equipment
LowerPerformance or PremiumENGINE OIL COOLING SYSTEM(KC4)
View on
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GATES Fits: 3.6L V6 52258
🇺🇸 US 🇨🇦 CA
Molded
Fitment notes — GATES 52258
Molded
Lowerwithout Oil Cooler
View on
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GM GENUINE Fits: 3.6L V6 84016172
🇺🇸 US 🇨🇦 CA
Fits LowerLuxury
Fitment notes — GM GENUINE 84016172
Fits:
LowerLuxury
or:
LowerPerformance or PremiumExc. Engine Oil Cooling System (KC4)
View on
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GM GENUINE Fits: 3.6L V6 84016177
🇺🇸 US 🇨🇦 CA
LowerPerformance
Fitment notes — GM GENUINE 84016177
LowerPerformancePremiumEngine Oil Cooling System (KC4)
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GM GENUINE Fits: 3.6L V6 Turbocharged 23346494
🇺🇸 US 🇨🇦 CA
Upper
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GM GENUINE Fits: 3.6L V6 Turbocharged 84128674
🇺🇸 US 🇨🇦 CA
LowerValue Added Powertrain Dress
View on
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This table covers the upper, lower and connecting hoses between radiator, engine and reservoir. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle.

Radiator Seal

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 Turbocharged 23107669
🇺🇸 US 🇨🇦 CA
Lower
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GM GENUINE Fits: 3.6L V6 Turbocharged 23362367
🇺🇸 US 🇨🇦 CA
Upper
View on
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GM GENUINE Fits: 3.6L V6 Turbocharged 23107670
🇺🇸 US 🇨🇦 CA
Left
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GM GENUINE Fits: 3.6L V6 Turbocharged 23107671
🇺🇸 US 🇨🇦 CA
Right
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This table covers the seals at the Radiator. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.

Radiator Upper Air Baffle Retainer / Clip

Brand Part Number Markets Notes Buy
DORMAN Fits: 3.6L V6 700365
🇺🇸 US 🇨🇦 CA
Outside Diameter: 0.688 InAir Box Clip
Fitment notes — DORMAN 700365
Outside Diameter: 0.688 InAir Box Clip
Fits:
LeftSide Air Baffle
or:
RightSide Air Baffle
or:
UpperAir Baffle
View on
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DORMAN Fits: 3.6L V6 963058
🇺🇸 US 🇨🇦 CA
Outside Diameter: 0.71 InAir Box Clip
Fitment notes — DORMAN 963058
Outside Diameter: 0.71 InAir Box Clip
Fits:
LeftSide Air Baffle
or:
RightSide Air Baffle
or:
UpperAir Baffle
View on
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DORMAN Fits: 3.6L V6 Turbocharged 961362
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
LowerAir Baffle
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DORMAN Fits: 3.6L V6 Turbocharged 963208
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Fits LeftSide Air Baffle
Fitment notes — DORMAN 963208
Fits:
LeftSide Air Baffle
or:
RightSide Air Baffle
or:
UpperAir Baffle
View on
Amazon
GM GENUINE Fits: 3.6L V6, 3.6L V6 Turbocharged 10402850
🇺🇸 US 🇨🇦 CA
Steel
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This table covers the Radiator Upper Air Baffle retainers and clips.

Temperature Sender / Sensor

Economy

Brand Part Number Markets Notes Buy
GPD Fits: 3.6L V6 1712577
🇺🇸 US 🇨🇦 CA
Located in Radiator or Water Outletwith 2 Terminal(s)
View on
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VEMO Fits: 3.6L V6 V51720323
🇺🇸 US 🇨🇦 CA
Sensor, coolant temperature
View on
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VEMO Fits: 3.6L V6 V40720632
🇺🇸 US 🇨🇦 CA
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 3.6L V6 12650595
🇺🇸 US 🇨🇦 CA
Fits AWD8 speed Automatic trans.
Fitment notes — GM GENUINE 12650595
Fits:
AWD8 speed Automatic trans.Sensor with Shoulderor RWD8 speed Automatic trans.Sensor with ShoulderExc. Engine Oil Cooling System (KC4)
or:
RWDPremium8 speed Automatic trans.Sensor with ShoulderEngine Oil Cooling System (KC4)
View on
Amazon
STANDARD MOTOR PRODUCTS Popular Fits: 3.6L V6 TX281
🇺🇸 US 🇨🇦 CA
View on
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DELPHI Fits: 3.6L V6 TS10628
🇺🇸 US 🇨🇦 CA
View on
Amazon
WALKER PRODUCTS Fits: 3.6L V6 2112025
🇺🇸 US 🇨🇦 CA
SensorIncludes O-Ring
View on
Amazon

This table covers the senders that report coolant temperature to the gauge or ECU. Typical signs include a gauge that sits on empty or overheat, or a lamp that does not match what the engine is doing. Rule out the cluster and the wiring before replacing the sender.

Temperature Sender / Sensor O-Ring

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 Turbocharged 12639042
🇺🇸 US 🇨🇦 CA
Fits 8 speed Automatic trans.or 6 speed Manual trans.
View on
Amazon

This table covers the Temperature Sender / Sensor O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove.

Thermostat

Economy

Brand Part Number Markets Notes Buy
AUTOTECNICA Fits: 3.6L V6 GM0720800
🇺🇸 US 🇨🇦 CA
Includes Gasket, Lower Housing and Thermostat
Fitment notes — AUTOTECNICA GM0720800
Includes Gasket, Lower Housing and Thermostat
Material: Metal
View on
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SKP Fits: 3.6L V6 SK1581889
🇺🇸 US 🇨🇦 CA
Includes Housing
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
FOUR SEASONS Popular Fits: 3.6L V6 86323
🇺🇸 US 🇨🇦 CA
AluminumIncludes Housing
View on
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MOTORAD Popular Fits: 3.6L V6 959195
🇺🇸 US 🇨🇦 CA
Includes Housing, Bolts, Seal
Fitment notes — MOTORAD 959195
Includes Housing, Bolts, Seal
195 Degrees FOE Specified Temperature
View on
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MAHLE / CLEVITE Fits: 3.6L V6 TI284100
🇺🇸 US 🇨🇦 CA
Integral ThermostatIncludes Gasket or Seal
Fitment notes — MAHLE / CLEVITE TI284100
Integral ThermostatIncludes Gasket or Seal
Start to Open Temperature: 100 C
View on
Amazon
Brand Part Number Markets Notes Buy
GATES Fits: 3.6L V6 34937
🇺🇸 US 🇨🇦 CA
Integrated Housing Thermostat
Fitment notes — GATES 34937
Integrated Housing Thermostat
192 DegreeOE TemperatureSeal Included
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This table covers the thermostats that open the coolant circuit at the specified temperature. Typical signs include slow warm-up, a gauge that climbs in traffic, or heat that never quite arrives. Replace the housing gasket with the thermostat and bleed the system so a trapped air pocket does not cook the new part.

Thermostat / Thermostat Housing / Water Outlet Seal

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 3.6L V6 1534732
🇺🇸 US 🇨🇦 CA
Single UseRWD
Fitment notes — GM GENUINE 1534732
Single UseRWDWater Outlet Seal
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GM GENUINE Popular Fits: 3.6L V6 12647181
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 12647181
Black
Single UseThermostat Housing Seal
View on
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ELRING Fits: 3.6L V6 048290
🇺🇸 US 🇨🇦 CA
Material: HNBR (hydrogenated nitrile butadiene rubber)
Fitment notes — ELRING 048290
Material: HNBR (hydrogenated nitrile butadiene rubber)
Thermostat Seal
View on
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FEL-PRO Fits: 3.6L V6 36164
🇺🇸 US 🇨🇦 CA
Upper
View on
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FEL-PRO Fits: 3.6L V6 36165
🇺🇸 US 🇨🇦 CA
Lower
View on
Amazon
GM GENUINE Fits: 3.6L V6 12647308
🇺🇸 US 🇨🇦 CA
Single UseWater Outlet Seal
View on
Amazon
MAHLE / CLEVITE Fits: 3.6L V6 C33501
🇺🇸 US 🇨🇦 CA
Molded Rubber
View on
Amazon
MAHLE / CLEVITE Fits: 3.6L V6 C33503
🇺🇸 US 🇨🇦 CA
Molded Rubber
Fitment notes — MAHLE / CLEVITE C33503
Molded Rubber
Water Outlet Seal
View on
Amazon
VICTOR REINZ Fits: 3.6L V6 711405000
🇺🇸 US 🇨🇦 CA
O-Ring TypeThermostat to Cover Seal
Fitment notes — VICTOR REINZ 711405000
O-Ring TypeThermostat to Cover SealReplaces OE Part Number(s) 12582472Thermostat Seal
View on
Amazon

This table covers the seals at the thermostat housing and water outlet. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.

Thermostat Housing / Water Outlet

Brand Part Number Markets Notes Buy
ACDELCO Fits: 3.6L V6 1511109
🇺🇸 US 🇨🇦 CA
GM Original Equipment
Fitment notes — ACDELCO 1511109
GM Original Equipment
Water Outlet
View on
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GATES Fits: 3.6L V6 CO35087
🇺🇸 US 🇨🇦 CA
Coolant InletWater Outlet
View on
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GM GENUINE Fits: 3.6L V6 12741007
🇺🇸 US 🇨🇦 CA
Thermostat Housing
View on
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MOTORAD Fits: 3.6L V6 CH3091
🇺🇸 US 🇨🇦 CA
Includes Seal
Fitment notes — MOTORAD CH3091
Includes Seal
Fits:
UpperWater Outlet
or:
UpperThermostat Housing
View on
Amazon

This table covers the housings and outlets the thermostat sits in.

Water Inlet Gasket

Brand Part Number Markets Notes Buy
FEL-PRO Fits: 3.6L V6 36167
🇺🇸 US 🇨🇦 CA
View on
Amazon
GM GENUINE Fits: 3.6L V6 12647400
🇺🇸 US 🇨🇦 CA
Material: Stainless Steel Rubber
Fitment notes — GM GENUINE 12647400
Material: Stainless Steel Rubber
SINGLE USE
View on
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MAHLE / CLEVITE Fits: 3.6L V6 C33508
🇺🇸 US 🇨🇦 CA
Steel
View on
Amazon

This table covers the gaskets that seal the Water Inlet. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.

Water Pump

Economy

Brand Part Number Markets Notes Buy
SKP Popular Fits: 3.6L V6 SK1305130
🇺🇸 US 🇨🇦 CA
Main
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CARTER Fits: 3.6L V6 W9361M
🇺🇸 US 🇨🇦 CA
Impeller Material: Steel
View on
Amazon
FVP Fits: 3.6L V6 US8148
🇺🇸 US 🇨🇦 CA
View on
Amazon
US MOTOR WORKS Fits: 3.6L V6 US8148
🇺🇸 US 🇨🇦 CA
View on
Amazon
VAICO Fits: 3.6L V6 V4050049
🇺🇸 US 🇨🇦 CA
Material Type: Metal Impeller
Fitment notes — VAICO V4050049
Material Type: Metal Impeller
Manual trans.without Pulleywith Gasket
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 3.6L V6 12707180
🇺🇸 US 🇨🇦 CA
View on
Amazon
ACDELCO Fits: 3.6L V6 2521038
🇺🇸 US 🇨🇦 CA
GoldDoes Not Include Mount Bolts
View on
Amazon
AISIN Fits: 3.6L V6 WPGM611V
🇺🇸 US 🇨🇦 CA
View on
Amazon
GATES Fits: 3.6L V6 43326
🇺🇸 US 🇨🇦 CA
View on
Amazon

This table covers the pumps that circulate coolant through the block and radiator. Typical signs include coolant at the weep hole, pulley play, or a growl from the front of the engine. Replace the thermostat and refill with the specified coolant whenever the pump comes off.

Water Pump Gasket

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 3.6L V6 2512072
🇺🇸 US 🇨🇦 CA
PUMP TO HOUSING
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ELRING Fits: 3.6L V6 048370
🇺🇸 US 🇨🇦 CA
InnerAWD
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ELRING Fits: 3.6L V6 048320
🇺🇸 US 🇨🇦 CA
Shape: Rectangular
Fitment notes — ELRING 048320
Shape: Rectangular
Engine SideAWD
View on
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ELRING Fits: 3.6L V6 237160
🇺🇸 US 🇨🇦 CA
Engine SideAWD
View on
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FEL-PRO Fits: 3.6L V6 36153
🇺🇸 US 🇨🇦 CA
To BlockPump To Housing
View on
Amazon

This table covers the gaskets between the water pump and the block or housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.

Water Pump Inlet Tube

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 12706857
🇺🇸 US 🇨🇦 CA
without BOLTS, RETAINERS, OR SEAL
View on
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This table covers the Water Pump Inlet tubes.

Water Pump Pulley

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 12652047
🇺🇸 US 🇨🇦 CA
View on
Amazon

This table covers the Water Pump pulleys. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt.

Water Pump Seal / O-Ring

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 12646951
🇺🇸 US 🇨🇦 CA
InnerSingle Use
Fitment notes — GM GENUINE 12646951
InnerSingle UseRoundSeal
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GM GENUINE Fits: 3.6L V6 12646952
🇺🇸 US 🇨🇦 CA
OuterSingle Use
Fitment notes — GM GENUINE 12646952
OuterSingle UseKeyholeSeal
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GM GENUINE Fits: 3.6L V6 12649987
🇺🇸 US 🇨🇦 CA
OutletSingle Use
Fitment notes — GM GENUINE 12649987
OutletSingle UseSeal
View on
Amazon

This table covers the Water Pump Seal O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove.

Buying Cooling System Parts for a 2016 Cadillac Ats

On this vehicle, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses.

  • Match the engine first. Every cooling system part here is engine-specific; each row shows which engine(s) it fits.
  • Read the notes on each row for position, trim and spec qualifiers before you order.
  • Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
  • Cross-reference the manufacturer part number against your old part or a service-manual listing.

Start with the largest groups on this page: Coolant / Antifreeze and Coolant Hose / Pipe .

Frequently Asked Questions

How many cooling system parts fit the 2016 Cadillac Ats?

Our catalog currently lists 166 cooling system parts for the 2016 Cadillac Ats across 35 subcategories and 39 brands, covering all 4 engine options (2.0L L4 Turbocharged, 2.5L L4, 3.6L V6 and 3.6L V6 Turbocharged). Each part is matched to the engine(s) it fits.

Do cooling system parts differ between 2016 Cadillac Ats engines?

Yes. Every cooling system part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.

What are the signs of cooling system problems on a 2016 Cadillac Ats?

Common symptoms include a rising temperature gauge in traffic, sweet-smelling steam, crusty deposits around hose clamps, or a heater that blows cold. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.

What should I replace at the same time?

Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.

What do the market flags (US, CA, MX) on each part mean?

They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2016 Cadillac Ats was originally sold in the US, the safest choice is a part marked for the US market.

How do I make sure a part fits my 2016 Cadillac Ats?

First match the engine — each row shows which engine(s) the part fits. Then replace coolant with the exact specification the manufacturer calls for — mixing chemistries can gel and block small passages. The notes column carries position and trim qualifiers where they apply.

Other Parts for the 2016 Cadillac Ats

Cooling System Parts for Other Cadillac Ats Years

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