2021 Chevrolet Malibu Cooling System Parts

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. Read more

16 Coolant / Antifreeze parts are listed for the 2021 Chevrolet Malibu, from PRESTONE, PEAK, VALVOLINE and 3 other brands. FVP MV5050GAL carries the "Popular" badge.

The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.

In the Economy grade, FVP, PEAK, PRESTONE and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is FVP MV5050GAL.

The Premium section lists 4 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.

The Standard Replacement section lists 7 options from VALVOLINE, PRESTONE, ACDELCO and 2 other brands — built to original-equipment specification. ACDELCO 105027 is listed in this group.

This table covers the Coolant Air Bleed Hose pipes. Read more

GM GENUINE supplies the 3 Coolant Air Bleed Hose / Pipe parts for the 2021 Chevrolet Malibu.

This group includes GM GENUINE 12634280, GM GENUINE 12683453 and GM GENUINE 85135104.

This table covers the hard pipes and extra hoses in the coolant circuit. Read more

One part is listed for the 2021 Chevrolet Malibu — GM GENUINE 12627054.

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. Read more

7 Coolant Hose / Pipe Seal parts for the 2021 Chevrolet Malibu come from 3 brands — GM GENUINE, FEL-PRO and MAHLE / CLEVITE. The "Popular" part is GM GENUINE 12627055.

Listed part numbers: GM GENUINE 12627055, GM GENUINE 12662185 and FEL-PRO 36156, plus the other parts above.

This table covers the Coolant Hose retainers and clips. Read more

One part is listed for the 2021 Chevrolet Malibu — GM GENUINE 15041309.

This table covers the overflow / expansion tanks that hold extra coolant. Read more

7 Coolant Reservoir parts for the 2021 Chevrolet Malibu come from 6 brands — TECHPRO, DORMAN, GM GENUINE and 3 other brands. The "Popular" part is DORMAN 603861.

Listed part numbers: DORMAN 603861, GM GENUINE 23386455 and GPD 2411160, plus the other parts above.

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. Read more

6 Coolant Reservoir Cap parts for the 2021 Chevrolet Malibu come from 6 brands — DORMAN, SKP, AUTOTECNICA and 3 other brands. The "Popular" part is DORMAN 54218.

Part numbers include DORMAN 54218, SKP SK54218 and AUTOTECNICA GM0714619, among others listed above.

This table covers the brackets that mount the Coolant Reservoir Hose. 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. Read more

One part is listed for the 2021 Chevrolet Malibu — GM GENUINE 23270619.

This table covers the Hose clamps. Read more

GM GENUINE supplies the 5 Hose Clamp parts for the 2021 Chevrolet Malibu. GM GENUINE 90530642 carries the "Popular" badge.

Listed part numbers: GM GENUINE 90530642, GM GENUINE 90572595 and GM GENUINE 90572587, plus the other parts above.

This table covers the intercoolers that cool turbo or supercharger charge air. Read more

4 Intercooler parts are listed for the 2021 Chevrolet Malibu, from TECHPRO, GM GENUINE, AGILITY and 1 other brand.

Economy: 1 part, from TECHPRO. A representative part number is TECHPRO GM3012109.

The Standard Replacement section: 1 option from GM GENUINE. GM GENUINE 23336319 is listed in this group.

2 ungrouped parts are not assigned to a grade, with the same engine-level match.

Listed part numbers: TECHPRO GM3012109, GM GENUINE 23336319 and AGILITY 5010037, plus the other parts above.

This table covers the Intercooler retainers and clips. Read more

This group shows a single part: GM GENUINE 84828210.

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. Read more

8 Radiator parts are listed for the 2021 Chevrolet Malibu, from ULTRA-POWER, CSF, TYC and 5 other brands. CSF 3899 carries the "Popular" badge.

Economy: 1 part, from ULTRA-POWER. A representative part number is ULTRA-POWER 13575.

The Standard Replacement section: 7 options from CSF, TYC, AGILITY and 4 other brands. CSF 3899 is listed in this group.

This group includes CSF 3899 and ULTRA-POWER 13575 and the remaining parts above.

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. Read more

2 Radiator Cap parts are listed for the 2021 Chevrolet Malibu, from ACDELCO and PROFESSIONAL PARTS SWEDEN.

This group includes ACDELCO RC124 and PROFESSIONAL PARTS SWEDEN 21342353.

This table covers the petcocks used to drain the radiator. Read more

This group shows a single part: GM GENUINE 23444086.

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

5 Radiator Fan Assembly parts for the 2021 Chevrolet Malibu come from 5 brands — GPD, TECHPRO, UAC and 2 other brands. The "Popular" part is UAC FA50692C.

The Economy section: 2 options from GPD and TECHPRO. GPD 2812302 is listed in this group.

Standard Replacement: 3 parts, from UAC, AGILITY and GM GENUINE. A representative part number is UAC FA50692C.

This group includes UAC FA50692C, GPD 2812302 and TECHPRO GM3115345 and the remaining parts above.

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. Read more

4 Radiator Hose parts for the 2021 Chevrolet Malibu come from 2 brands — ACDELCO and CONTINENTAL.

This group includes ACDELCO 85135102, ACDELCO 85135100 and CONTINENTAL 66503 and the remaining parts above.

This table covers the Radiator insulators. Read more

This group shows a single part: GM GENUINE 52493483.

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. Read more

This group shows a single part: DORMAN 926280.

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. Read more

This group shows a single part: GM GENUINE 84135599.

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. Read more

7 Temperature Sender / Sensor parts are listed for the 2021 Chevrolet Malibu, from HOLSTEIN, UNITED MOTOR PRODUCTS, GM GENUINE and 4 other brands. GM GENUINE 12656444 carries the "Popular" badge.

Economy: 2 parts, from HOLSTEIN and UNITED MOTOR PRODUCTS. A representative part number is HOLSTEIN 2CTS0187.

The Standard Replacement section: 5 options from GM GENUINE, STANDARD MOTOR PRODUCTS, NTK and 2 other brands. GM GENUINE 12656444 is listed in this group.

Part numbers include GM GENUINE 12656444, HOLSTEIN 2CTS0187 and UNITED MOTOR PRODUCTS CTS299, among others listed above.

This table covers the Temperature Sender / Sensor clips. Read more

One part is listed for the 2021 Chevrolet Malibu — DORMAN 66264.

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. Read more

One part is listed for the 2021 Chevrolet Malibu — GM GENUINE 12639042.

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. Read more

8 Thermostat parts for the 2021 Chevrolet Malibu come from 7 brands — GATES, AUTOTECNICA, DORMAN and 4 other brands. The "Popular" part is GATES 34717.

The Economy section: 3 options from AUTOTECNICA, DORMAN and SKP. AUTOTECNICA GM0720261 is listed in this group.

Standard Replacement: 5 parts, from GATES, MOTORAD, CALORSTAT and 1 other brand. A representative part number is GATES 34717.

This group includes GATES 34717, AUTOTECNICA GM0720261 and DORMAN 9022089 and the remaining parts above.

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. Read more

3 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2021 Chevrolet Malibu, from GM GENUINE and VICTOR REINZ.

Listed part numbers: GM GENUINE 12664202, GM GENUINE 12630780 and VICTOR REINZ 711782000.

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

7 Thermostat Housing / Water Outlet parts for the 2021 Chevrolet Malibu come from 5 brands — VEMO, GM GENUINE, DORMAN and 2 other brands. The "Popular" part is DORMAN 9022087.

The Economy section: 3 options from VEMO and DORMAN. DORMAN 9022087 is listed in this group.

Standard Replacement: 4 parts, from GM GENUINE, GATES and MOTORAD. A representative part number is GM GENUINE 1581764.

Part numbers include DORMAN 9022087, VEMO V40991103 and VEMO V51990021, among others listed above.

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. Read more

17 Water Pump parts for the 2021 Chevrolet Malibu come from 10 brands — US MOTOR WORKS, FVP, GATES and 7 other brands. The "Popular" part is US MOTOR WORKS US8102.

The Economy section: 8 options from US MOTOR WORKS, FVP, SKP and 1 other brand. US MOTOR WORKS US8102 is listed in this group.

Standard Replacement: 9 parts, from GATES, DAYCO, ACDELCO and 3 other brands. A representative part number is ACDELCO 2521009.

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. Read more

4 Water Pump Gasket parts are listed for the 2021 Chevrolet Malibu, from GM GENUINE, FEL-PRO and VICTOR REINZ.

This group includes FEL-PRO 36154, GM GENUINE 2512064 and GM GENUINE 2512063 and the remaining parts above.

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. Read more

This group shows a single part: GM GENUINE 12691259.