185 Cooling system parts are listed for the 2016 Buick Regal, in 33 part types, covering all 3 engine options (2.0L L4 Turbocharged, 2.4L L4 and 2.4L L4 ELECTRIC/GAS). Each one has a brand, a manufacturer part number and notes that say where it fits.
The cooling system system on the 2016 Buick Regal keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses. The largest groups are Water Pump (23 parts), Temperature Sender / Sensor (17 parts) and Coolant / Antifreeze (16 parts). The other 30 part types cover the remaining 129 parts.
The 2016 Buick Regal was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2016 Buick Regal cooling system parts are GM GENUINE (30 parts), GATES (12 parts) and MOTORAD (10 parts), plus 50 more brands. Quality grades include Standard Replacement, Economy and Premium.
35 parts on this 2016 Buick Regal page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including FVP MV5050GAL (Coolant / Antifreeze) and CONTINENTAL 63912 (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: 2.4L L4 | AF3055 | 🇺🇸 US 🇨🇦 CA | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Popular Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | MV5050GAL | 🇺🇸 US 🇨🇦 CA | Extended LifeAll Makes / All Models | View on Amazon |
| PEAK Fits: 2.4L L4 | BQA1GAL | 🇺🇸 US 🇨🇦 CA | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| PRESTONE Fits: 2.4L L4 | AF3100 | 🇺🇸 US 🇨🇦 CA | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| VALVOLINE Fits: 2.4L L4 | 719009 | 🇺🇸 US 🇨🇦 CA | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: 2.4L L4 | AF2100 | 🇺🇸 US 🇨🇦 CA | All Vehicles10yr/300k mi | View on Amazon |
| PEAK Fits: 2.4L L4 | PKP1GAL | 🇺🇸 US 🇨🇦 CA | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK Fits: 2.4L L4 | PXA1GAL | 🇺🇸 US 🇨🇦 CA | Global Lifetime1 Gallon | View on Amazon |
| PRESTONE Fits: 2.4L L4 | AFMAX | 🇺🇸 US 🇨🇦 CA | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 2.4L L4 | 105027 | 🇺🇸 US 🇨🇦 CA | DEX-Cool Extended LifeDexcool (with DE-Ionized Water) (with Bitterant) 1 Gallon | View on Amazon |
| VALVOLINE Popular Fits: 2.4L L4 | ZXEL1 | 🇺🇸 US 🇨🇦 CA | Dex-Cool Orange1 Gallon | View on Amazon |
| AISIN Fits: 2.4L L4 | ACD005 | 🇺🇸 US 🇨🇦 CA | OrangeOAT | View on Amazon |
| FVP Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | DEX5050GAL | 🇺🇸 US 🇨🇦 CA | Extended Life Blend1 Gallon | View on Amazon |
| PRESTONE Fits: 2.4L L4 | AF3400 | 🇺🇸 US 🇨🇦 CA | Prime OrangeOrange Compatible | View on Amazon |
| PRESTONE Fits: 2.4L L4 | AF850 | 🇺🇸 US 🇨🇦 CA | DEX-Cool Extended Life1 Gallon | View on Amazon |
| VALVOLINE Fits: 2.4L L4 | 888374 | 🇺🇸 US 🇨🇦 CA | 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 Buick Regal 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 Bleeder
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.4L L4 | 13267637 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the bleeders used to purge air from the coolant circuit.
One part is listed for the 2016 Buick Regal — GM GENUINE 13267637.
Coolant Bleed Hose Fitting
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.4L L4 | 12589732 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Coolant Bleed Hose fittings.
This group shows a single part: GM GENUINE 12589732.
Coolant Hose / Pipe
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL Popular Fits: 2.4L L4 | 63912 | 🇺🇸 US 🇨🇦 CA | I.D. 0.750"Length 15" | View on Amazon |
| GATES Popular Fits: 2.4L L4 | 28475 | 🇺🇸 US 🇨🇦 CA | 90 Degree Molded3/4" x 16" (4" Short Side | View on Amazon |
| ACDELCO Fits: 2.4L L4 | 16199M | 🇺🇸 US 🇨🇦 CA | Gold / Professional90 Degree Molded | View on Amazon |
| GM GENUINE Fits: 2.4L L4 | 20809018 | 🇺🇸 US 🇨🇦 CA | Coolant Hose Heat Shield Included: YES | View on Amazon |
| GM GENUINE Fits: 2.4L L4 | 22922980 | 🇺🇸 US 🇨🇦 CA | Auxiliary Radiator InletPremium | View on Amazon |
| GM GENUINE Fits: 2.4L L4 | 90537356 | 🇺🇸 US 🇨🇦 CA | Fits OutletPremiumor Outlet | View on Amazon |
This table covers the hard pipes and extra hoses in the coolant circuit.
6 Coolant Hose / Pipe parts for the 2016 Buick Regal come from 4 brands — GM GENUINE, CONTINENTAL, GATES and 1 other brand. The "Popular" part is CONTINENTAL 63912.
Part numbers include CONTINENTAL 63912, GATES 28475 and ACDELCO 16199M, among others listed above.
Coolant Hose / Pipe Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APEX Fits: 2.4L L4 | AWO2348 | 🇺🇸 US 🇨🇦 CA | O-Ring | View on Amazon |
| FEL-PRO Fits: 2.4L L4 | 36068 | 🇺🇸 US 🇨🇦 CA | O-Ring | View on Amazon |
| GM GENUINE Fits: 2.4L L4 | 90537379 | 🇺🇸 US 🇨🇦 CA | Fits OutletPremium | View on Amazon |
| MAHLE / CLEVITE Fits: 2.4L L4 | C31853 | 🇺🇸 US 🇨🇦 CA | Engine Coolant Outlet O-RingMolded Rubber | 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.
4 Coolant Hose / Pipe Seal parts are listed for the 2016 Buick Regal, from APEX, FEL-PRO, GM GENUINE and 1 other brand.
Listed part numbers: APEX AWO2348, FEL-PRO 36068 and GM GENUINE 90537379, plus the other parts above.
Coolant Hose Connector / Flange
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.4L L4 | 12607291 | 🇺🇸 US 🇨🇦 CA | Fits Premiumwith Surge Portor Base Model | View on Amazon |
This table covers the Coolant Hose Connector flanges.
This group shows a single part: GM GENUINE 12607291.
Coolant Reservoir
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular Fits: 2.4L L4 | 603385 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| AUTOTECNICA Fits: 2.4L L4 | GM0713819 | 🇺🇸 US 🇨🇦 CA | Includes cap & sensor | View on Amazon |
| GM GENUINE Fits: 2.4L L4 | 22950436 | 🇺🇸 US 🇨🇦 CA | without SENSORSwithout SENSOR | View on Amazon |
| GPD Fits: 2.4L L4 | 2411090 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| LARES Fits: 2.4L L4 | 37230 | 🇺🇸 US 🇨🇦 CA | Includes Cap | View on Amazon |
| TECHPRO Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | GM3014156 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| TECHPRO Fits: 2.4L L4 | GM3014157 | 🇺🇸 US 🇨🇦 CA | Includes Cap | View on Amazon |
This table covers the overflow / expansion tanks that hold extra coolant.
7 Coolant Reservoir parts are listed for the 2016 Buick Regal, from TECHPRO, DORMAN, AUTOTECNICA and 3 other brands. DORMAN 603385 carries the "Popular" badge.
This group includes DORMAN 603385, AUTOTECNICA GM0713819 and GM GENUINE 22950436 and the remaining parts above.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular Fits: 2.4L L4 | 54218 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| AUTOTECNICA Fits: 2.4L L4 | GM0714619 | 🇺🇸 US 🇨🇦 CA | Diameter: 45mmPressure Rating: 20psi | View on Amazon |
| CALORSTAT Fits: 2.4L L4 | RC0144 | 🇺🇸 US 🇨🇦 CA | Maximum Pressure Rating: 20.0 PS | View on Amazon |
| GATES Fits: 2.4L L4 | 31569 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| MOTORAD Fits: 2.4L L4 | T62 | 🇺🇸 US 🇨🇦 CA | Standard | 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 Buick Regal, from DORMAN, AUTOTECNICA, CALORSTAT and 2 other brands. DORMAN 54218 carries the "Popular" badge.
Part numbers include DORMAN 54218, AUTOTECNICA GM0714619 and CALORSTAT RC0144, among others listed above.
Coolant Reservoir Retainer / Clip
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.4L L4 | 13284504 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Coolant Reservoir retainers and clips.
This group shows a single part: GM GENUINE 13284504.
Cooling System Tester Adapter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: 2.4L L4 | 31391 | 🇺🇸 US 🇨🇦 CA | Cooling System PressureRadiator Cap | View on Amazon |
| MOTORAD Fits: 2.4L L4 | 3128 | 🇺🇸 US 🇨🇦 CA | StandardRadiator Cap Adapter | View on Amazon |
| MOTORAD Fits: 2.4L L4 | 3127 | 🇺🇸 US 🇨🇦 CA | 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 Buick Regal come from 2 brands — MOTORAD and GATES.
This group includes GATES 31391, MOTORAD 3128 and MOTORAD 3127.
Hose Clamp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.4L L4 | 90572594 | 🇺🇸 US 🇨🇦 CA | Fits Base Model27 Diameter | View on Amazon |
| GM GENUINE Fits: 2.4L L4 | 13162312 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
| GM GENUINE Fits: 2.4L L4 | 11570614 | 🇺🇸 US 🇨🇦 CA | Clamp-Springband, 15 Nominal Diameter, 15 ThickReservoir Inlet Hose | View on Amazon |
| GM GENUINE Fits: 2.4L L4 | 11611503 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
This table covers the Hose clamps.
4 Hose Clamp parts for the 2016 Buick Regal come from GM GENUINE.
Part numbers include GM GENUINE 90572594, GM GENUINE 13162312 and GM GENUINE 11570614, among others listed above.
Intercooler
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| OSC Fits: 2.4L L4 | 13329 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the intercoolers that cool turbo or supercharger charge air.
This group shows a single part: OSC 13329.
Inverter Cooler
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CSF Fits: 2.4L L4 | 3627 | 🇺🇸 US 🇨🇦 CA | 1 RowO.E.M. Style All Aluminum Tanks & Core Model | View on Amazon |
| GPD Fits: 2.4L L4 | 2611364 | 🇺🇸 US 🇨🇦 CA | PremiumDrive Motor Inverter Cooler | View on Amazon |
| TECHPRO Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | GM3011100 | 🇺🇸 US 🇨🇦 CA | eASSIST | View on Amazon |
This table covers the Inverter coolers. Typical signs include overheated fluid, a leak at the fittings, or mixed fluids in the reservoir. Flush the lines when you replace a cooler.
3 Inverter Cooler parts are listed for the 2016 Buick Regal, from CSF, GPD and TECHPRO.
Part numbers include CSF 3627, GPD 2611364 and TECHPRO GM3011100.
Radiator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KOYORAD Popular Fits: 2.4L L4 | A13146 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| TYC Popular Fits: 2.4L L4 | 13146 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| AGILITY Fits: 2.4L L4 | 8013146 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| CSF Fits: 2.4L L4 | 3577 | 🇺🇸 US 🇨🇦 CA | 1 RowPlastic Tank / Aluminum Core | View on Amazon |
| FVP Fits: 2.4L L4 | RAD13146 | 🇺🇸 US 🇨🇦 CA | MAIN RADIATOR | View on Amazon |
| GM GENUINE Fits: 2.4L L4 | 21765 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| OSC Fits: 2.4L L4 | 13146 | 🇺🇸 US 🇨🇦 CA | Upgraded Design | View on Amazon |
| UAC Fits: 2.4L L4 | RA13146C | 🇺🇸 US 🇨🇦 CA | 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.
8 Radiator parts for the 2016 Buick Regal come from 8 brands — KOYORAD, TYC, AGILITY and 5 other brands. The "Popular" part is KOYORAD A13146.
Part numbers include KOYORAD A13146, TYC 13146 and AGILITY 8013146, among others listed above.
Radiator Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 2.4L L4 | RC124 | 🇺🇸 US 🇨🇦 CA | GM Original Equipment | View on Amazon |
| PROFESSIONAL PARTS SWEDEN Fits: 2.4L L4 | 21342353 | 🇺🇸 US 🇨🇦 CA | 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 Buick Regal come from 2 brands — ACDELCO and PROFESSIONAL PARTS SWEDEN.
Part numbers include ACDELCO RC124 and PROFESSIONAL PARTS SWEDEN 21342353.
Radiator Drain Petcock
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 2.4L L4 | 61136 | 🇺🇸 US 🇨🇦 CA | Screw-in with O-ring. M15-1.5 | View on Amazon |
This table covers the petcocks used to drain the radiator.
One part is listed for the 2016 Buick Regal — DORMAN 61136.
Radiator Fan Assembly
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Popular Fits: 2.4L L4 | SK621441 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GPD Fits: 2.4L L4 | 2811869 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TYC Popular Fits: 2.4L L4 | 622790 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FOUR SEASONS Fits: 2.4L L4 | 76299 | 🇺🇸 US 🇨🇦 CA | Left | View on Amazon |
| GM GENUINE Fits: 2.4L L4 | 1581690 | 🇺🇸 US 🇨🇦 CA | Left9 BLADES | View on Amazon |
| GM GENUINE Fits: 2.4L L4 | 1581691 | 🇺🇸 US 🇨🇦 CA | Right7 BLADES | View on Amazon |
| UAC Fits: 2.4L L4 | FA50363C | 🇺🇸 US 🇨🇦 CA | Radiator-Condenser Fan Assembly | View on Amazon |
| VDO / CONTINENTAL Fits: 2.4L L4 | FA70830 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator.
8 Radiator Fan Assembly parts are listed for the 2016 Buick Regal, from GM GENUINE, SKP, GPD and 4 other brands. SKP SK621441 carries the "Popular" badge.
Economy: 2 parts, from SKP and GPD. A representative part number is SKP SK621441.
The Standard Replacement section: 6 options from GM GENUINE, TYC, FOUR SEASONS and 2 other brands. TYC 622790 is listed in this group.
This group includes SKP SK621441, GPD 2811869 and TYC 622790 and the remaining parts above.
Radiator Fan Motor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Fits: 2.4L L4 | V51010034 | 🇺🇸 US 🇨🇦 CA | Left | View on Amazon |
| VEMO Fits: 2.4L L4 | V51010035 | 🇺🇸 US 🇨🇦 CA | Fits Right | View on Amazon |
This table covers the Radiator Fan motors. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor.
2 Radiator Fan Motor parts for the 2016 Buick Regal come from VEMO.
This group includes VEMO V51010034 and VEMO V51010035.
Radiator Hose
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL Popular Fits: 2.4L L4 | 67060 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| GATES Popular Fits: 2.4L L4 | 23975 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| CONTINENTAL Fits: 2.4L L4 | 67067 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| CONTINENTAL Fits: 2.4L L4 | 67068 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| CONTINENTAL Fits: 2.4L L4 | 66646 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| CONTINENTAL Fits: 2.4L L4 | 66645 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| DAYCO Fits: 2.4L L4 | 72755 | 🇺🇸 US 🇨🇦 CA | Curved | View on Amazon |
| GATES Fits: 2.4L L4 | 24514 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| GATES Fits: 2.4L L4 | 23732 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| GM GENUINE Fits: 2.4L L4 | 20877113 | 🇺🇸 US 🇨🇦 CA | UpperBase Model | 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.
10 Radiator Hose parts are listed for the 2016 Buick Regal, from CONTINENTAL, GATES, DAYCO and 1 other brand. CONTINENTAL 67060 carries the "Popular" badge.
Radiator Insulator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.4L L4 | 13306606 | 🇺🇸 US 🇨🇦 CA | Upper | View on Amazon |
This table covers the Radiator insulators.
One part is listed for the 2016 Buick Regal — GM GENUINE 13306606.
Radiator Mount
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.4L L4 | 52493483 | 🇺🇸 US 🇨🇦 CA | Lower | View on Amazon |
This table covers the Radiator mounts. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes.
One part is listed for the 2016 Buick Regal — GM GENUINE 52493483.
Radiator Mount Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 2.4L L4 | 926280 | 🇺🇸 US 🇨🇦 CA | Lower | View on Amazon |
| SKP Fits: 2.4L L4 | SK926280 | 🇺🇸 US 🇨🇦 CA | Lower | View on Amazon |
| ULTRA-POWER Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | 926280 | 🇺🇸 US 🇨🇦 CA | LOWERPK QTY: 2 | View on Amazon |
This table covers the Radiator Mount bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.
3 Radiator Mount Bushing parts are listed for the 2016 Buick Regal, from DORMAN, SKP and ULTRA-POWER.
Listed part numbers: DORMAN 926280 and SKP SK926280, plus the other parts above.
Radiator Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.4L L4 | 22867535 | 🇺🇸 US 🇨🇦 CA | 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.
One part is listed for the 2016 Buick Regal — GM GENUINE 22867535.
Radiator Upper Air Baffle Retainer / Clip
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 2.4L L4 | 700365 | 🇺🇸 US 🇨🇦 CA | Outside Diameter: 0.688 InAir Box Clip | View on Amazon |
| DORMAN Fits: 2.4L L4 | 963058 | 🇺🇸 US 🇨🇦 CA | Outside Diameter: 0.71 InAir Box Clip | View on Amazon |
This table covers the Radiator Upper Air Baffle retainers and clips.
DORMAN supplies both parts for the 2016 Buick Regal.
Part numbers include DORMAN 700365 and DORMAN 963058.
Temperature Sender / Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 | TX89T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| DORMAN Fits: 2.4L L4 | 926016 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GPD Fits: 2.4L L4 | 1712489 | 🇺🇸 US 🇨🇦 CA | with 2 Terminal(s)with M12 x 1.5 Thread | View on Amazon |
| HOLSTEIN Fits: 2.4L L4 | 2CTS0318 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| UNITED MOTOR PRODUCTS Fits: 2.4L L4 | CTS73 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Full Service Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WALKER PRODUCTS Popular Fits: 2.4L L4 | 21191118 | 🇺🇸 US 🇨🇦 CA | Full Service Kit | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 2.4L L4 | 2134333 | 🇺🇸 US 🇨🇦 CA | White or BlackUse with Mating Connector PT1798 | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 | TX89 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| BECK/ARNLEY Fits: 2.4L L4 | 1580733 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| BOSCH Fits: 2.4L L4 | 0280130014 | 🇺🇸 US 🇨🇦 CA | Engine Coolant Temperature Sensor | View on Amazon |
| DELPHI Fits: 2.4L L4 | TS10076 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FOUR SEASONS Fits: 2.4L L4 | 37858 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HELLA Fits: 2.4L L4 | 009107271 | 🇺🇸 US 🇨🇦 CA | 2-Pin ConnectorBolted | View on Amazon |
| NTK Fits: 2.4L L4 | EF0075 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Oblong | View on Amazon |
| WALKER PRODUCTS Fits: 2.4L L4 | 2111118 | 🇺🇸 US 🇨🇦 CA | Sensor Only | View on Amazon |
| WELLS Fits: 2.4L L4 | 5S1475 | 🇺🇸 US 🇨🇦 CA | Terminal Quantity: 2Terminal Type: Blade | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Fits: 2.4L L4 ELECTRIC/GAS | 5S1475 | 🇺🇸 US 🇨🇦 CA | Sender | 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.
17 Temperature Sender / Sensor parts for the 2016 Buick Regal come from 15 brands — STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, DORMAN and 12 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS TX89T.
The Economy section: 5 options from STANDARD MOTOR PRODUCTS, DORMAN, GPD and 2 other brands. STANDARD MOTOR PRODUCTS TX89T is listed in this group.
The Full Service Kit section lists 1 option from WALKER PRODUCTS — grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. WALKER PRODUCTS 21191118 is listed in this group.
Standard Replacement: 10 parts, from GM GENUINE, STANDARD MOTOR PRODUCTS, BECK/ARNLEY and 7 other brands. A representative part number is GM GENUINE 2134333.
1 further part sits outside the graded sections, with the same engine-level match.
Thermostat
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Fits: 2.4L L4 | V40990024 | 🇺🇸 US 🇨🇦 CA | with Gasket | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: 2.4L L4 | 5461180 | 🇺🇸 US 🇨🇦 CA | Ultra StatIncludes seal | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: 2.4L L4 | 7461180 | 🇺🇸 US 🇨🇦 CA | Fail-SafeIncludes seal | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: 2.4L L4 | 33943 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| GM GENUINE Popular Fits: 2.4L L4 | 131158 | 🇺🇸 US 🇨🇦 CA | Fits Premiumor Base ModelTrans. code 6T40 | View on Amazon |
| MOTORAD Popular Fits: 2.4L L4 | 461180 | 🇺🇸 US 🇨🇦 CA | Includes Seal | View on Amazon |
| AISIN Fits: 2.4L L4 | THRGM0001 | 🇺🇸 US 🇨🇦 CA | Includes Thermostat Seal | View on Amazon |
| CALORSTAT Fits: 2.4L L4 | TH688382J | 🇺🇸 US 🇨🇦 CA | Includes 1 Rubber Gasket | View on Amazon |
| GATES Fits: 2.4L L4 | CO34953 | 🇺🇸 US 🇨🇦 CA | Coolant OutletIncludes Housing | View on Amazon |
| MAHLE / CLEVITE Fits: 2.4L L4 | TX12282 | 🇺🇸 US 🇨🇦 CA | Includes Gasket or Seal | View on Amazon |
| MOTORAD Fits: 2.4L L4 | 5349KT | 🇺🇸 US 🇨🇦 CA | Kit | View on Amazon |
| MOTORAD Fits: 2.4L L4 | TA2009 | 🇺🇸 US 🇨🇦 CA | Includes upper and lower housings, seal | 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.
12 Thermostat parts are listed for the 2016 Buick Regal, from MOTORAD, GATES, VEMO and 4 other brands. GATES 33943 carries the "Popular" badge.
Economy: 1 part, from VEMO. A representative part number is VEMO V40990024.
The Heavy Duty section lists 1 option from MOTORAD — rated for severe service. MOTORAD 5461180 is listed in this group.
The Premium section: 1 option from MOTORAD. MOTORAD 7461180 is listed in this group.
The Standard Replacement section: 9 options from MOTORAD, GATES, GM GENUINE and 3 other brands. GATES 33943 is listed in this group.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular Fits: 2.4L L4 | 35346 | 🇺🇸 US 🇨🇦 CA | Thermostat Seal | View on Amazon |
| FEL-PRO Popular Fits: 2.4L L4 | 36122 | 🇺🇸 US 🇨🇦 CA | Thermostat Housing Seal | View on Amazon |
| MAHLE / CLEVITE Popular Fits: 2.4L L4 | C31200 | 🇺🇸 US 🇨🇦 CA | Engine Coolant Outlet O-RingMolded Rubber | View on Amazon |
| APEX Fits: 2.4L L4 | AWO2385 | 🇺🇸 US 🇨🇦 CA | Water Inlet SealThermostat Seal | View on Amazon |
| APEX Fits: 2.4L L4 | AWO2030 | 🇺🇸 US 🇨🇦 CA | Thermostat Seal | View on Amazon |
| CALORSTAT Fits: 2.4L L4 | J38 | 🇺🇸 US 🇨🇦 CA | Thermostat Seal | View on Amazon |
| ELRING Fits: 2.4L L4 | 446240 | 🇺🇸 US 🇨🇦 CA | Fits Engine SidedAWD | View on Amazon |
| ELRING Fits: 2.4L L4 | 446020 | 🇺🇸 US 🇨🇦 CA | Material: EPDM ethylene propylene diene Monomer (M-class) rubber | View on Amazon |
| GM GENUINE Fits: 2.4L L4 | 3522676 | 🇺🇸 US 🇨🇦 CA | Fits PremiumSquare Cut | View on Amazon |
| MAHLE / CLEVITE Fits: 2.4L L4 | C31998 | 🇺🇸 US 🇨🇦 CA | Molded Rubber | View on Amazon |
| VICTOR REINZ Fits: 2.4L L4 | 711357400 | 🇺🇸 US 🇨🇦 CA | Water Outlet 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.
11 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2016 Buick Regal come from 7 brands — FEL-PRO, MAHLE / CLEVITE, APEX and 4 other brands. The "Popular" part is FEL-PRO 35346.
Thermostat Housing / Water Outlet
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Popular Fits: 2.4L L4 | SK9022094 | 🇺🇸 US 🇨🇦 CA | CoverWater Outlet | View on Amazon |
| DORMAN Fits: 2.4L L4 | 9022094 | 🇺🇸 US 🇨🇦 CA | Thermostat Housing | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 2.4L L4 | 12597172 | 🇺🇸 US 🇨🇦 CA | Fits PremiumThermostat Housingor Base Model | View on Amazon |
| FOUR SEASONS Fits: 2.4L L4 | 85349 | 🇺🇸 US 🇨🇦 CA | UpperWater Outlet | View on Amazon |
| GATES Fits: 2.4L L4 | CO34933 | 🇺🇸 US 🇨🇦 CA | Thermostat CoverWater Outlet | View on Amazon |
| GATES Fits: 2.4L L4 | CO34975 | 🇺🇸 US 🇨🇦 CA | Thermostat Housing | View on Amazon |
| MOTORAD Fits: 2.4L L4 | CH5349 | 🇺🇸 US 🇨🇦 CA | UpperWater Outlet | View on Amazon |
| MOTORAD Fits: 2.4L L4 | CH2009 | 🇺🇸 US 🇨🇦 CA | Fits LowerThermostat Housing | View on Amazon |
| VEMO Fits: 2.4L L4 | V51990013 | 🇺🇸 US 🇨🇦 CA | LowerThermostat Housing | View on Amazon |
This table covers the housings and outlets the thermostat sits in.
9 Thermostat Housing / Water Outlet parts are listed for the 2016 Buick Regal, from GATES, MOTORAD, SKP and 4 other brands. SKP SK9022094 carries the "Popular" badge.
Economy: 2 parts, from SKP and DORMAN. A representative part number is SKP SK9022094.
The Standard Replacement section: 7 options from GATES, MOTORAD, GM GENUINE and 2 other brands. GM GENUINE 12597172 is listed in this group.
This group includes SKP SK9022094, DORMAN 9022094 and GM GENUINE 12597172 and the remaining parts above.
Water Inlet Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.4L L4 | 90537471 | 🇺🇸 US 🇨🇦 CA | Fits PremiumROUND WILL CHANGE TO OBLONG SHAPE WHEN ASSEMBLED | 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.
This group shows a single part: GM GENUINE 90537471.
Water Pump
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Popular Fits: 2.4L L4 | SK1307350 | 🇺🇸 US 🇨🇦 CA | Gas | View on Amazon |
| CARDONE Fits: 2.4L L4 | 5W7004 | 🇺🇸 US 🇨🇦 CA | Engine Auxiliary | View on Amazon |
| CARDONE Fits: 2.4L L4 | 5W7005 | 🇺🇸 US 🇨🇦 CA | Engine Auxiliary | View on Amazon |
| FVP Fits: 2.4L L4 | US5092 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FVP Fits: 2.4L L4 | US5092G | 🇺🇸 US 🇨🇦 CA | Includes Gear and Back Housing | View on Amazon |
| US MOTOR WORKS Fits: 2.4L L4 | US5092 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| US MOTOR WORKS Fits: 2.4L L4 | US5092G | 🇺🇸 US 🇨🇦 CA | Includes Gear and Back Housing | View on Amazon |
| VAICO Fits: 2.4L L4 | V4050043 | 🇺🇸 US 🇨🇦 CA | Material Type: Metal Impeller | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: 2.4L L4 | 43529 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GM GENUINE Popular Fits: 2.4L L4 | 251751 | 🇺🇸 US 🇨🇦 CA | Fits Premiumor Base ModelTrans. code 6T40 | View on Amazon |
| GMB Popular Fits: 2.4L L4 | 1307350AH | 🇺🇸 US 🇨🇦 CA | Includes Housing and Timing Chain Sprocket | View on Amazon |
| MELLING Popular Fits: 2.4L L4 | MWP526WS | 🇺🇸 US 🇨🇦 CA | Includes Water Pump Drive Sprocket | View on Amazon |
| ACDELCO Fits: 2.4L L4 | 252821 | 🇺🇸 US 🇨🇦 CA | GoldDoes Not Include Mount Bolts | View on Amazon |
| AISIN Fits: 2.4L L4 | WPGM700 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DAYCO Fits: 2.4L L4 | DP208 | 🇺🇸 US 🇨🇦 CA | without housing | View on Amazon |
| DAYCO Fits: 2.4L L4 | DEP1052 | 🇺🇸 US 🇨🇦 CA | PremiumAuxiliary | View on Amazon |
| DAYCO Fits: 2.4L L4 | DEP1051 | 🇺🇸 US 🇨🇦 CA | HeaterPremium | View on Amazon |
| GATES Fits: 2.4L L4 | 41546E | 🇺🇸 US 🇨🇦 CA | Electric | View on Amazon |
| GMB Fits: 2.4L L4 | 1307350 | 🇺🇸 US 🇨🇦 CA | Primary Pump | View on Amazon |
| GMB Fits: 2.4L L4 | 1309050 | 🇺🇸 US 🇨🇦 CA | Premiumfor Hybrid Generator Cooling | View on Amazon |
| GMB Fits: 2.4L L4 | 1309040 | 🇺🇸 US 🇨🇦 CA | PremiumFor HVAC System | View on Amazon |
| INA Fits: 2.4L L4 | XW0301 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| PIERBURG Fits: 2.4L L4 | 728509020 | 🇺🇸 US 🇨🇦 CA | Includes Cover & Gaskets | 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.
23 Water Pump parts are listed for the 2016 Buick Regal, from GMB, DAYCO, CARDONE and 11 other brands. SKP SK1307350 carries the "Popular" badge.
Economy: 8 parts, from CARDONE, FVP, US MOTOR WORKS and 2 other brands. A representative part number is SKP SK1307350.
The Standard Replacement section: 15 options from GMB, DAYCO, GATES and 6 other brands. GATES 43529 is listed in this group.
Water Pump Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular Fits: 2.4L L4 | ES71282 | 🇺🇸 US 🇨🇦 CA | Gasket Kit | View on Amazon |
| MAHLE / CLEVITE Popular Fits: 2.4L L4 | GS33776 | 🇺🇸 US 🇨🇦 CA | Contains All Water Pump Gaskets and SealsMolded Rubber | View on Amazon |
| VICTOR REINZ Popular Fits: 2.4L L4 | 181007101 | 🇺🇸 US 🇨🇦 CA | Mounting Set | View on Amazon |
| APEX Fits: 2.4L L4 | AWP3182 | 🇺🇸 US 🇨🇦 CA | Cover | View on Amazon |
| APEX Fits: 2.4L L4 | AWP3181 | 🇺🇸 US 🇨🇦 CA | Mounting | View on Amazon |
| ELRING Fits: 2.4L L4 | 061670 | 🇺🇸 US 🇨🇦 CA | Fits Engine SidedAWD | View on Amazon |
| ELRING Fits: 2.4L L4 | 483760 | 🇺🇸 US 🇨🇦 CA | Fits AWDPremium | View on Amazon |
| ELRING Fits: 2.4L L4 | 446160 | 🇺🇸 US 🇨🇦 CA | Fits AWDPremium | View on Amazon |
| FEL-PRO Fits: 2.4L L4 | 35724 | 🇺🇸 US 🇨🇦 CA | To BlockCover | View on Amazon |
| FEL-PRO Fits: 2.4L L4 | 35721 | 🇺🇸 US 🇨🇦 CA | To Block | View on Amazon |
| GM GENUINE Fits: 2.4L L4 | 90537915 | 🇺🇸 US 🇨🇦 CA | Fits PremiumCoveror Base Model | View on Amazon |
| GM GENUINE Fits: 2.4L L4 | 2512053 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| VICTOR REINZ Fits: 2.4L L4 | 711418500 | 🇺🇸 US 🇨🇦 CA | Cover | View on Amazon |
| VICTOR REINZ Fits: 2.4L L4 | 711418400 | 🇺🇸 US 🇨🇦 CA | Mounting | 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.
14 Water Pump Gasket parts for the 2016 Buick Regal come from 6 brands — FEL-PRO, VICTOR REINZ, ELRING and 3 other brands. The "Popular" part is FEL-PRO ES71282.
Water Pump Gear
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING Popular Fits: 2.4L L4 | S911 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| CLOYES Fits: 2.4L L4 | S911 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FVP Fits: 2.4L L4 | S911 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GM GENUINE Fits: 2.4L L4 | 90537298 | 🇺🇸 US 🇨🇦 CA | Fits Premiumor Base ModelTrans. code 6T40 | View on Amazon |
| PREFERRED COMPONENTS INC Fits: 2.4L L4 | G55911 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Water Pump gears.
5 Water Pump Gear parts for the 2016 Buick Regal come from 5 brands — MELLING, CLOYES, FVP and 2 other brands. The "Popular" part is MELLING S911.
Listed part numbers: MELLING S911, plus the other parts above.
Water Pump Housing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.4L L4 | 90537266 | 🇺🇸 US 🇨🇦 CA | Engine Coolant Water Pump Cover | View on Amazon |
This table covers the Water Pump housings.
This group shows a single part: GM GENUINE 90537266.
Buying Cooling System Parts for a 2016 Buick Regal
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: Water Pump and Temperature Sender / Sensor .
Frequently Asked Questions
How many cooling system parts fit the 2016 Buick Regal?
Our catalog currently lists 185 cooling system parts for the 2016 Buick Regal across 33 subcategories and 53 brands, covering all 3 engine options (2.0L L4 Turbocharged, 2.4L L4 and 2.4L L4 ELECTRIC/GAS). Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 2016 Buick Regal 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 Buick Regal?
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 Buick Regal 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 Buick Regal?
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 Buick Regal
Cooling System Parts for Other Buick Regal Years
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