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.
The 2016 Cadillac Ats was sold with 4 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2016 Cadillac Ats cooling system parts are GM GENUINE (66 parts), ACDELCO (8 parts) and ELRING (7 parts), plus 36 more brands. Quality grades include Standard Replacement, Economy and Premium.
26 parts on this 2016 Cadillac Ats page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including FVP MV5050GAL (Coolant / Antifreeze) and GM GENUINE 12627054 (Coolant Hose / Pipe). Click any part number to see every vehicle that part fits.
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 | View on Amazon |
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 | View on Amazon |
| PEAK Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged | BQA1GAL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| PRESTONE Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged | AF3100 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| VALVOLINE Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged | 719009 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Multi-Vehicle Yellow1 Gallon | View on Amazon |
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 | View on Amazon |
| PEAK Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged | PKP1GAL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged | PXA1GAL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Global Lifetime1 Gallon | View on Amazon |
| PRESTONE Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged | AFMAX | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Max Universal1 Gallon | View on Amazon |
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 | View on Amazon |
| VALVOLINE Popular Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged | ZXEL1 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Dex-Cool Orange1 Gallon | View on Amazon |
| AISIN Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged | ACD005 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | OrangeOAT | View on Amazon |
| FVP Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged | DEX5050GAL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Extended Life Blend1 Gallon | View on Amazon |
| PRESTONE Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged | AF3400 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Prime OrangeOrange Compatible | View on Amazon |
| PRESTONE Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged | AF850 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | DEX-Cool Extended Life1 Gallon | View on Amazon |
| VALVOLINE Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged | 888374 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | American Vehicle Orange1 Gallon | View on Amazon |
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.
16 Coolant / Antifreeze parts for the 2016 Cadillac Ats come from 6 brands — PRESTONE, PEAK, VALVOLINE and 3 other brands. The "Popular" part is FVP MV5050GAL.
In the Compatible With All Colors grade, PRESTONE supplies 1 part: grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. A representative part number is PRESTONE AF3055.
The Economy section lists 4 options from FVP, PEAK, PRESTONE and 1 other brand — the catalog's value-priced group. FVP MV5050GAL is listed in this group.
In the Premium grade, PRESTONE and PEAK supply 4 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.
In the Standard Replacement grade, VALVOLINE, PRESTONE, ACDELCO and 2 other brands supply 7 parts: built to original-equipment specification. A representative part number is ACDELCO 105027.
Coolant Air Bleed Hose / Pipe
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.5L L4 | 12683454 | 🇺🇸 US 🇨🇦 CA | 4-Door SedanBreather Pipe | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 12653191 | 🇺🇸 US 🇨🇦 CA | without CLAMP | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 12717142 | 🇺🇸 US 🇨🇦 CA | Frontwith Seal, Hose, and Fasteners | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 12679080 | 🇺🇸 US 🇨🇦 CA | Includes Bolts | View on Amazon |
This table covers the Coolant Air Bleed Hose pipes.
4 Coolant Air Bleed Hose / Pipe parts for the 2016 Cadillac Ats come from GM GENUINE.
Listed part numbers: GM GENUINE 12683454, GM GENUINE 12653191 and GM GENUINE 12717142, plus the other parts above.
Coolant Hose / Pipe
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 2.5L L4 | 12627054 | 🇺🇸 US 🇨🇦 CA | Thermostat To Pipe4-door Sedan | View on Amazon |
| GM GENUINE Popular Fits: 3.6L V6 Turbocharged | 84128680 | 🇺🇸 US 🇨🇦 CA | InletIntercooler Coolant Hose | View on Amazon |
| GM GENUINE Popular Fits: 3.6L V6 Turbocharged | 84184771 | 🇺🇸 US 🇨🇦 CA | Expansion Tank Inlet | View on Amazon |
| ACDELCO Fits: 3.6L V6 Turbocharged | 12705971 | 🇺🇸 US 🇨🇦 CA | GM Original EquipmentPipe | View on Amazon |
| CONTINENTAL Fits: 2.5L L4 | 65016 | 🇺🇸 US 🇨🇦 CA | Hy-T Red Heater | View on Amazon |
| GM GENUINE Fits: 2.5L L4 | 12679317 | 🇺🇸 US 🇨🇦 CA | 4-Door SedanThermostat Bypass | View on Amazon |
| GM GENUINE Fits: 2.5L L4 | 12670936 | 🇺🇸 US 🇨🇦 CA | PipeMounting Bracket Included: YES | View on Amazon |
| GM GENUINE Fits: 2.5L L4 | 22908201 | 🇺🇸 US 🇨🇦 CA | Expansion Tank InletSedan | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 84016173 | 🇺🇸 US 🇨🇦 CA | Hose Only | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 12662507 | 🇺🇸 US 🇨🇦 CA | Oil Cooler InletRWD | View on Amazon |
| GM GENUINE Fits: 3.6L V6 Turbocharged | 84128687 | 🇺🇸 US 🇨🇦 CA | LowerMain Radiator | View on Amazon |
| GM GENUINE Fits: 3.6L V6 Turbocharged | 84128682 | 🇺🇸 US 🇨🇦 CA | OutletIntercooler Coolant Hose | View on Amazon |
| GM GENUINE Fits: 3.6L V6 Turbocharged | 84128685 | 🇺🇸 US 🇨🇦 CA | LowerMain Radiator | View on Amazon |
This table covers the hard pipes and extra hoses in the coolant circuit.
13 Coolant Hose / Pipe parts for the 2016 Cadillac Ats come from 3 brands — GM GENUINE, ACDELCO and CONTINENTAL. The "Popular" part is GM GENUINE 12627054.
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 | View on Amazon |
| FEL-PRO Fits: 2.5L L4 | 36156 | 🇺🇸 US 🇨🇦 CA | Thermostat Bypass Pipe Seal | View on Amazon |
| GM GENUINE Fits: 2.5L L4 | 12627055 | 🇺🇸 US 🇨🇦 CA | 4-Door SedanSingle Use | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 12659280 | 🇺🇸 US 🇨🇦 CA | Rim Shape: Oval | View on Amazon |
| GM GENUINE Fits: 3.6L V6 Turbocharged | 12623519 | 🇺🇸 US 🇨🇦 CA | Color: Red | View on Amazon |
| GM GENUINE Fits: 3.6L V6 Turbocharged | 12640401 | 🇺🇸 US 🇨🇦 CA | Turbocharger Intercooler Tube To Turbocharger IntercoolerIntercooler Tube | View on Amazon |
| MAHLE / CLEVITE Fits: 2.5L L4 | C33470 | 🇺🇸 US 🇨🇦 CA | Steel | View on Amazon |
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.
7 Coolant Hose / Pipe Seal parts are listed for the 2016 Cadillac Ats, from GM GENUINE, ELRING, FEL-PRO and 1 other brand.
Part numbers include ELRING 943630, FEL-PRO 36156 and GM GENUINE 12627055, among others listed above.
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 | View on Amazon |
| GM GENUINE Fits: 3.6L V6, 3.6L V6 Turbocharged | 23333192 | 🇺🇸 US 🇨🇦 CA | Performance or Premium3 PORT TEE CONNECTOR | View on Amazon |
This table covers the Coolant Hose Connector flanges.
2 Coolant Hose Connector / Flange parts for the 2016 Cadillac Ats come from 2 brands — FOUR SEASONS and GM GENUINE.
This group includes FOUR SEASONS 86373 and GM GENUINE 23333192.
Coolant Hose Connector / Flange Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 3.6L V6 | 237180 | 🇺🇸 US 🇨🇦 CA | Engine BlockInlet Flange Seal | View on Amazon |
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.
One part is listed for the 2016 Cadillac Ats — ELRING 237180.
Coolant Pipe Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: 3.6L V6 Turbocharged | 01154600 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
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.
One part is listed for the 2016 Cadillac Ats — AJUSA 01154600.
Coolant Reservoir
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged | 22948113 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GPD Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged | 2411335 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the overflow / expansion tanks that hold extra coolant.
2 Coolant Reservoir parts are listed for the 2016 Cadillac Ats, from GM GENUINE and GPD.
This group includes GM GENUINE 22948113 and GPD 2411335.
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 | View on Amazon |
| ACDELCO Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged | 12R05 | 🇺🇸 US 🇨🇦 CA | Professional | View on Amazon |
| AUTOTECNICA Fits: 3.6L V6 | GM0714619 | 🇺🇸 US 🇨🇦 CA | Diameter: 45mmPressure Rating: 20psi | View on Amazon |
| CALORSTAT Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged | RC0144 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Maximum Pressure Rating: 20.0 PS | View on Amazon |
| GATES Fits: 2.5L L4, 3.6L V6, 3.6L V6 Turbocharged | 31569 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | OE Type | View on Amazon |
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.
5 Coolant Reservoir Cap parts are listed for the 2016 Cadillac Ats, from MOTORAD, ACDELCO, AUTOTECNICA and 2 other brands. MOTORAD T62 carries the "Popular" badge.
This group includes MOTORAD T62, ACDELCO 12R05 and AUTOTECNICA GM0714619 and the remaining parts above.
Coolant Reservoir Clamp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 Turbocharged | 90572587 | 🇺🇸 US 🇨🇦 CA | M15X12 | View on Amazon |
This table covers the Coolant Reservoir clamps.
This group shows a single part: GM GENUINE 90572587.
Cooling Fan Control Module
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 1581991 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SHEE-MAR Fits: 3.6L V6, 3.6L V6 Turbocharged | SM1270 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | OE Module | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6, 3.6L V6 Turbocharged | RY1941 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS Fits: 3.6L V6, 3.6L V6 Turbocharged | 6H1494 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Cooling Fan control modules.
4 Cooling Fan Control Module parts are listed for the 2016 Cadillac Ats, from GM GENUINE, SHEE-MAR, STANDARD MOTOR PRODUCTS and 1 other brand.
Part numbers include GM GENUINE 1581991, SHEE-MAR SM1270 and STANDARD MOTOR PRODUCTS RY1941, among others listed above.
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 | View on Amazon |
| MOTORAD Fits: 3.6L V6, 3.6L V6 Turbocharged | 3128 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | StandardRadiator Cap Adapter | View on Amazon |
| MOTORAD Fits: 3.6L V6, 3.6L V6 Turbocharged | 3127 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Standard | View on Amazon |
This table covers the adapters used to pressure-test this cooling system.
3 Cooling System Tester Adapter parts for the 2016 Cadillac Ats come from 2 brands — MOTORAD and GATES.
Listed part numbers: GATES 31391, MOTORAD 3128 and MOTORAD 3127.
Hose Clamp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 3.6L V6 Turbocharged | 11570871 | 🇺🇸 US 🇨🇦 CA | Gray | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 13162312 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 90572587 | 🇺🇸 US 🇨🇦 CA | Fits M15X12Air Bleed Hos | View on Amazon |
| GM GENUINE Fits: 3.6L V6, 3.6L V6 Turbocharged | 11603426 | 🇺🇸 US 🇨🇦 CA | Fits Lower42mm Diameter X 15 Wide | View on Amazon |
| GM GENUINE Fits: 3.6L V6 Turbocharged | 90572594 | 🇺🇸 US 🇨🇦 CA | 27 DiameterIntercooler Hose | View on Amazon |
| GM GENUINE Fits: 3.6L V6 Turbocharged | 11547681 | 🇺🇸 US 🇨🇦 CA | Fits LowerM37X15 | View on Amazon |
| GM GENUINE Fits: 3.6L V6 Turbocharged | 11611503 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
This table covers the Hose clamps.
7 Hose Clamp parts for the 2016 Cadillac Ats come from GM GENUINE. The "Popular" part is GM GENUINE 11570871.
Listed part numbers: GM GENUINE 11570871, GM GENUINE 13162312 and GM GENUINE 90572587, plus the other parts above.
Intercooler
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TECHPRO Fits: 3.6L V6 Turbocharged | GM3012113 | 🇺🇸 US 🇨🇦 CA | Fits VSedanor V | View on Amazon |
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 | View on Amazon |
| GM GENUINE Fits: 3.6L V6 Turbocharged | 12640408 | 🇺🇸 US 🇨🇦 CA | without FASTENERS | View on Amazon |
| GM GENUINE Fits: 3.6L V6 Turbocharged | 23477181 | 🇺🇸 US 🇨🇦 CA | Inlet Outside Diameter (mm): 22.3 mm | View on Amazon |
| 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 | View on Amazon |
| GPD Fits: 3.6L V6 Turbocharged | 2711569 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | CenterAuxiliary | View on Amazon |
This table covers the intercoolers that cool turbo or supercharger charge air.
6 Intercooler parts for the 2016 Cadillac Ats come from 4 brands — GM GENUINE, TECHPRO, STANDARD MOTOR PRODUCTS and 1 other brand. The "Popular" part is GM GENUINE 84510353.
The Economy section: 1 option from TECHPRO. TECHPRO GM3012113 is listed in this group.
Standard Replacement: 3 parts, from GM GENUINE. A representative part number is GM GENUINE 84510353.
2 further parts sit outside the graded sections, with the same engine-level match.
This group includes GM GENUINE 84510353, TECHPRO GM3012113 and GM GENUINE 12640408 and the remaining parts above.
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 | View on Amazon |
| GM GENUINE Fits: 3.6L V6 Turbocharged | 12672017 | 🇺🇸 US 🇨🇦 CA | PipeMounting Hardware Included: No | View on Amazon |
| GM GENUINE Fits: 3.6L V6 Turbocharged | 12701770 | 🇺🇸 US 🇨🇦 CA | End 1 Inside Diameter (In): 1.71 In | View on Amazon |
This table covers the Intercooler Air Hose pipes.
3 Intercooler Air Hose / Pipe parts for the 2016 Cadillac Ats come from GM GENUINE.
Part numbers include GM GENUINE 12672014, GM GENUINE 12672017 and GM GENUINE 12701770.
Intercooler Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 3.6L V6, 3.6L V6 Turbocharged | B18110 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| GM GENUINE Fits: 3.6L V6 | 12652017 | 🇺🇸 US 🇨🇦 CA | Material: Fluorocarbon | View on Amazon |
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.
2 Intercooler Gasket parts are listed for the 2016 Cadillac Ats, from ELRING and GM GENUINE.
Listed part numbers: ELRING B18110 and GM GENUINE 12652017.
Intercooler Hose / Pipe Bracket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 Turbocharged | 84399881 | 🇺🇸 US 🇨🇦 CA | RightTO FENDER | View on Amazon |
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.
This group shows a single part: GM GENUINE 84399881.
Radiator
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD Fits: 3.6L V6 | 13784C | 🇺🇸 US 🇨🇦 CA | Auxiliary RadiatorTurbo Intercooler | View on Amazon |
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 | View on Amazon |
| TYC Popular Fits: 3.6L V6 | 13589 | 🇺🇸 US 🇨🇦 CA | PRIMARY | View on Amazon |
| AGILITY Fits: 3.6L V6 | 8013589 | 🇺🇸 US 🇨🇦 CA | MAIN RADIATOR | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 86551902 | 🇺🇸 US 🇨🇦 CA | Transmission Oil Cooler Fitting Type: Quick Connect | View on Amazon |
| KOYORAD Fits: 3.6L V6 | A13598 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| KOYORAD Fits: 3.6L V6 | A13653 | 🇺🇸 US 🇨🇦 CA | Intercooler Radiator | View on Amazon |
| OSC Fits: 3.6L V6 | 13589 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| UAC Fits: 3.6L V6 | RA13589C | 🇺🇸 US 🇨🇦 CA | Fits or Luxury or Performance | View on Amazon |
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.
9 Radiator parts for the 2016 Cadillac Ats come from 8 brands — KOYORAD, GPD, CSF and 5 other brands. The "Popular" part is CSF 3904.
The Economy section: 1 option from GPD. GPD 13784C is listed in this group.
Standard Replacement: 8 parts, from KOYORAD, CSF, TYC and 4 other brands. A representative part number is CSF 3904.
Listed part numbers: CSF 3904, GPD 13784C and TYC 13589, plus the other parts above.
Radiator Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 3.6L V6, 3.6L V6 Turbocharged | RC117 | 🇺🇸 US 🇨🇦 CA | GM Original Equipment | View on Amazon |
| ACDELCO Fits: 3.6L V6, 3.6L V6 Turbocharged | RC115 | 🇺🇸 US 🇨🇦 CA | GM Original EquipmentIncludes Label | View on Amazon |
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.
2 Radiator Cap parts for the 2016 Cadillac Ats come from ACDELCO.
This group includes ACDELCO RC117 and ACDELCO RC115.
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 Amazon |
This table covers the petcocks used to drain the radiator.
One part is listed for the 2016 Cadillac Ats — GM GENUINE 22887095.
Radiator Fan Assembly
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 3.6L V6 Turbocharged | 621984 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| 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 Amazon | |
| TYC Popular Fits: 3.6L V6, 3.6L V6 Turbocharged | 624510 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Does Not Include Fan Control Module | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 1581865 | 🇺🇸 US 🇨🇦 CA | Extra Capacity Cooling (V03)600 W ECM MOTOR | View on Amazon |
| UAC Fits: 3.6L V6 Turbocharged | FA50792C | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Radiator-Condenser Fan Assembly | View on Amazon |
| 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.
10 Radiator Fan Assembly parts are listed for the 2016 Cadillac Ats, from GPD, GM GENUINE, DORMAN and 5 other brands. GM GENUINE 1581927 carries the "Popular" badge.
Economy: 5 parts, from GPD, DORMAN, TECHPRO and 1 other brand. A representative part number is DORMAN 621984.
The Standard Replacement section: 5 options from GM GENUINE, TYC, UAC and 1 other brand. GM GENUINE 1581927 is listed in this group.
Radiator Hose
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: 3.6L V6 | 52289 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| GM GENUINE Popular Fits: 3.6L V6 | 84016171 | 🇺🇸 US 🇨🇦 CA | Upper | View on Amazon |
| ACDELCO Fits: 3.6L V6 | 84133465 | 🇺🇸 US 🇨🇦 CA | GM Original Equipment | View on Amazon |
| GATES Fits: 3.6L V6 | 52258 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 84016172 | 🇺🇸 US 🇨🇦 CA | Fits LowerLuxury | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 84016177 | 🇺🇸 US 🇨🇦 CA | LowerPerformance | View on Amazon |
| GM GENUINE Fits: 3.6L V6 Turbocharged | 23346494 | 🇺🇸 US 🇨🇦 CA | Upper | View on Amazon |
| GM GENUINE Fits: 3.6L V6 Turbocharged | 84128674 | 🇺🇸 US 🇨🇦 CA | LowerValue Added Powertrain Dress | View on Amazon |
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.
8 Radiator Hose parts are listed for the 2016 Cadillac Ats, from GM GENUINE, GATES and ACDELCO. GATES 52289 carries the "Popular" badge.
Part numbers include GATES 52289, GM GENUINE 84016171 and ACDELCO 84133465, among others listed above.
Radiator Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 Turbocharged | 23107669 | 🇺🇸 US 🇨🇦 CA | Lower | View on Amazon |
| GM GENUINE Fits: 3.6L V6 Turbocharged | 23362367 | 🇺🇸 US 🇨🇦 CA | Upper | View on Amazon |
| GM GENUINE Fits: 3.6L V6 Turbocharged | 23107670 | 🇺🇸 US 🇨🇦 CA | Left | View on Amazon |
| GM GENUINE Fits: 3.6L V6 Turbocharged | 23107671 | 🇺🇸 US 🇨🇦 CA | Right | View on Amazon |
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.
GM GENUINE supplies the 4 Radiator Seal parts for the 2016 Cadillac Ats.
This group includes GM GENUINE 23107669, GM GENUINE 23362367 and GM GENUINE 23107670 and the remaining parts above.
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 | View on Amazon |
| DORMAN Fits: 3.6L V6 | 963058 | 🇺🇸 US 🇨🇦 CA | Outside Diameter: 0.71 InAir Box Clip | View on Amazon |
| DORMAN Fits: 3.6L V6 Turbocharged | 961362 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LowerAir Baffle | View on Amazon |
| DORMAN Fits: 3.6L V6 Turbocharged | 963208 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits LeftSide Air Baffle | View on Amazon |
| GM GENUINE Fits: 3.6L V6, 3.6L V6 Turbocharged | 10402850 | 🇺🇸 US 🇨🇦 CA | Steel | View on Amazon |
This table covers the Radiator Upper Air Baffle retainers and clips.
5 Radiator Upper Air Baffle Retainer / Clip parts are listed for the 2016 Cadillac Ats, from DORMAN and GM GENUINE.
Listed part numbers: DORMAN 700365, DORMAN 963058 and DORMAN 961362, plus the other parts above.
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 Amazon |
| VEMO Fits: 3.6L V6 | V51720323 | 🇺🇸 US 🇨🇦 CA | Sensor, coolant temperature | View on Amazon |
| 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. | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 3.6L V6 | TX281 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| 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.
7 Temperature Sender / Sensor parts for the 2016 Cadillac Ats come from 6 brands — VEMO, GPD, GM GENUINE and 3 other brands. The "Popular" part is GM GENUINE 12650595.
The Economy section: 3 options from VEMO and GPD. GPD 1712577 is listed in this group.
Standard Replacement: 4 parts, from GM GENUINE, STANDARD MOTOR PRODUCTS, DELPHI and 1 other brand. A representative part number is GM GENUINE 12650595.
Part numbers include GM GENUINE 12650595, GPD 1712577 and VEMO V51720323, among others listed above.
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.
This group shows a single part: GM GENUINE 12639042.
Thermostat
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTOTECNICA Fits: 3.6L V6 | GM0720800 | 🇺🇸 US 🇨🇦 CA | Includes Gasket, Lower Housing and Thermostat | View on Amazon |
| 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 Amazon |
| MOTORAD Popular Fits: 3.6L V6 | 959195 | 🇺🇸 US 🇨🇦 CA | Includes Housing, Bolts, Seal | View on Amazon |
| MAHLE / CLEVITE Fits: 3.6L V6 | TI284100 | 🇺🇸 US 🇨🇦 CA | Integral ThermostatIncludes Gasket or Seal | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: 3.6L V6 | 34937 | 🇺🇸 US 🇨🇦 CA | Integrated Housing Thermostat | View on Amazon |
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.
6 Thermostat parts are listed for the 2016 Cadillac Ats, from AUTOTECNICA, SKP, FOUR SEASONS and 3 other brands. FOUR SEASONS 86323 carries the "Popular" badge.
Economy: 2 parts, from AUTOTECNICA and SKP. A representative part number is AUTOTECNICA GM0720800.
The Standard Replacement section: 3 options from FOUR SEASONS, MOTORAD and MAHLE / CLEVITE. FOUR SEASONS 86323 is listed in this group.
1 ungrouped part is not assigned to a grade, with the same engine-level match.
Listed part numbers: FOUR SEASONS 86323, AUTOTECNICA GM0720800 and SKP SK1581889, plus the other parts above.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 3.6L V6 | 1534732 | 🇺🇸 US 🇨🇦 CA | Single UseRWD | View on Amazon |
| GM GENUINE Popular Fits: 3.6L V6 | 12647181 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
| ELRING Fits: 3.6L V6 | 048290 | 🇺🇸 US 🇨🇦 CA | Material: HNBR (hydrogenated nitrile butadiene rubber) | View on Amazon |
| FEL-PRO Fits: 3.6L V6 | 36164 | 🇺🇸 US 🇨🇦 CA | Upper | View on Amazon |
| 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 | View on Amazon |
| VICTOR REINZ Fits: 3.6L V6 | 711405000 | 🇺🇸 US 🇨🇦 CA | O-Ring TypeThermostat to Cover 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.
9 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2016 Cadillac Ats come from 5 brands — GM GENUINE, FEL-PRO, MAHLE / CLEVITE and 2 other brands. The "Popular" part is GM GENUINE 1534732.
This group includes GM GENUINE 1534732, GM GENUINE 12647181 and ELRING 048290 and the remaining parts above.
Thermostat Housing / Water Outlet
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 3.6L V6 | 1511109 | 🇺🇸 US 🇨🇦 CA | GM Original Equipment | View on Amazon |
| GATES Fits: 3.6L V6 | CO35087 | 🇺🇸 US 🇨🇦 CA | Coolant InletWater Outlet | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 12741007 | 🇺🇸 US 🇨🇦 CA | Thermostat Housing | View on Amazon |
| MOTORAD Fits: 3.6L V6 | CH3091 | 🇺🇸 US 🇨🇦 CA | Includes Seal | View on Amazon |
This table covers the housings and outlets the thermostat sits in.
4 Thermostat Housing / Water Outlet parts are listed for the 2016 Cadillac Ats, from ACDELCO, GATES, GM GENUINE and 1 other brand.
This group includes ACDELCO 1511109, GATES CO35087 and GM GENUINE 12741007 and the remaining parts above.
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 | View on Amazon |
| 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.
3 Water Inlet Gasket parts for the 2016 Cadillac Ats come from 3 brands — FEL-PRO, GM GENUINE and MAHLE / CLEVITE.
Part numbers include FEL-PRO 36167, GM GENUINE 12647400 and MAHLE / CLEVITE C33508.
Water Pump
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Popular Fits: 3.6L V6 | SK1305130 | 🇺🇸 US 🇨🇦 CA | Main | View on Amazon |
| 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 | 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.
9 Water Pump parts are listed for the 2016 Cadillac Ats, from SKP, CARTER, FVP and 6 other brands. SKP SK1305130 carries the "Popular" badge.
Economy: 5 parts, from SKP, CARTER, FVP and 2 other brands. A representative part number is SKP SK1305130.
The Standard Replacement section: 4 options from GM GENUINE, ACDELCO, AISIN and 1 other brand. GM GENUINE 12707180 is listed in this group.
Listed part numbers: SKP SK1305130, CARTER W9361M and FVP US8148, plus the other parts above.
Water Pump Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 3.6L V6 | 2512072 | 🇺🇸 US 🇨🇦 CA | PUMP TO HOUSING | View on Amazon |
| ELRING Fits: 3.6L V6 | 048370 | 🇺🇸 US 🇨🇦 CA | InnerAWD | View on Amazon |
| ELRING Fits: 3.6L V6 | 048320 | 🇺🇸 US 🇨🇦 CA | Shape: Rectangular | View on Amazon |
| ELRING Fits: 3.6L V6 | 237160 | 🇺🇸 US 🇨🇦 CA | Engine SideAWD | View on Amazon |
| 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.
5 Water Pump Gasket parts for the 2016 Cadillac Ats come from 3 brands — ELRING, GM GENUINE and FEL-PRO. The "Popular" part is GM GENUINE 2512072.
Part numbers include GM GENUINE 2512072, ELRING 048370 and ELRING 048320, among others listed above.
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 Amazon |
This table covers the Water Pump Inlet tubes.
One part is listed for the 2016 Cadillac Ats — GM GENUINE 12706857.
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.
This group shows a single part: GM GENUINE 12652047.
Water Pump Seal / O-Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 12646951 | 🇺🇸 US 🇨🇦 CA | InnerSingle Use | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 12646952 | 🇺🇸 US 🇨🇦 CA | OuterSingle Use | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 12649987 | 🇺🇸 US 🇨🇦 CA | OutletSingle Use | 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.
GM GENUINE supplies the 3 Water Pump Seal / O-Ring parts for the 2016 Cadillac Ats.
This group includes GM GENUINE 12646951, GM GENUINE 12646952 and GM GENUINE 12649987.
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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