2021 Chevrolet Suburban 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

17 Coolant / Antifreeze parts are listed for the 2021 Chevrolet Suburban, from PRESTONE, PEAK, VALVOLINE and 3 other brands. FVP MV5050GAL carries the "Popular" badge. 13 parts fit every engine; the other 4 are engine-specific.

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 Heavy Duty section lists 1 option from PRESTONE — rated for severe service. PRESTONE AFC12100 is listed in this group.

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 both parts for the 2021 Chevrolet Suburban.

Listed part numbers: GM GENUINE 85044183 and GM GENUINE 85044182.

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

GM GENUINE supplies the 10 Coolant Hose / Pipe parts for the 2021 Chevrolet Suburban. GM GENUINE 85510535 carries the "Popular" badge.

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

This group shows a single part: GM GENUINE 55496156.

This table covers the Coolant Hose Connector flanges. Read more

One part is listed for the 2021 Chevrolet Suburban — GM GENUINE 1510595.

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

GM GENUINE supplies the 3 Coolant Hose Retainer / Clip parts for the 2021 Chevrolet Suburban.

This group includes GM GENUINE 11549232, GM GENUINE 11548672 and GM GENUINE 11549297.

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

9 Coolant Reservoir parts for the 2021 Chevrolet Suburban come from 5 brands — TECHPRO, GM GENUINE, DORMAN and 2 other brands.

Listed part numbers: DORMAN 603149, GM GENUINE 84645616 and GM GENUINE 84632822, 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

7 Coolant Reservoir Cap parts for the 2021 Chevrolet Suburban come from 6 brands — MOTORAD, DORMAN, SKP and 3 other brands. The "Popular" part is DORMAN 54218. 4 parts fit every engine; the other 3 are engine-specific.

Listed part numbers: DORMAN 54218, SKP SK54218 and AUTOTECNICA GM0714619, plus the other parts above.

This table covers the adapters used to pressure-test this cooling system. Read more

MOTORAD supplies both parts for the 2021 Chevrolet Suburban.

Part numbers include MOTORAD 3128 and MOTORAD 3127.

This table covers the Hose clamps. Read more

GM GENUINE supplies the 8 Hose Clamp parts for the 2021 Chevrolet Suburban. GM GENUINE 11570871 carries the "Popular" badge. 4 parts fit every engine; the other 4 are engine-specific.

This group includes GM GENUINE 11570871, GM GENUINE 90530642 and GM GENUINE 90572594 and the remaining parts above.

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

One part is listed for the 2021 Chevrolet Suburban — GM GENUINE 55512267.

This table covers the Intercooler Air Hose pipes. Read more

GM GENUINE supplies both parts for the 2021 Chevrolet Suburban.

This group includes GM GENUINE 55515941 and GM GENUINE 55515942.

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. Read more

One part is listed for the 2021 Chevrolet Suburban — GM GENUINE 40009428.

This table covers the Intercooler Hose / Pipe clamps. Read more

This group shows a single part: GM GENUINE 11549085.

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

14 Radiator parts are listed for the 2021 Chevrolet Suburban, from GPD, CSF, KOYORAD and 4 other brands. CSF 3978 carries the "Popular" badge.

Economy: 3 parts, from GPD. A representative part number is GPD 13843C.

The Standard Replacement section: 9 options from CSF, KOYORAD, GM GENUINE and 2 other brands. CSF 3978 is listed in this group.

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

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

3 Radiator Cap parts are listed for the 2021 Chevrolet Suburban, from ACDELCO, GATES and PROFESSIONAL PARTS SWEDEN. 2 parts fit every engine; the other 1 is engine-specific.

Part numbers include ACDELCO RC124, GATES 31569 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 22790134.

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

17 Radiator Fan Assembly parts for the 2021 Chevrolet Suburban come from 9 brands — GM GENUINE, AGILITY, TECHPRO and 6 other brands. The "Popular" part is DORMAN 621806.

The Economy section: 6 options from TECHPRO, GPD, DORMAN and 1 other brand. DORMAN 621806 is listed in this group.

Standard Replacement: 11 parts, from GM GENUINE, AGILITY, TYC and 2 other brands. A representative part number is TYC 625090.

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. Read more

One part is listed for the 2021 Chevrolet Suburban — GM GENUINE 85654566.

This table covers the shrouds that duct air through the fan and radiator. Read more

GM GENUINE supplies both parts for the 2021 Chevrolet Suburban.

Listed part numbers: GM GENUINE 84203930 and GM GENUINE 84120130.

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

6 Radiator Hose parts for the 2021 Chevrolet Suburban come from 2 brands — ACDELCO and GATES.

This group includes ACDELCO 85046337, ACDELCO 85046339 and ACDELCO 85522402 and the remaining parts above.

This table covers the Radiator Overflow Tube repair kits. Read more

This group shows a single part: GM GENUINE 22799347.

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

16 Temperature Sender / Sensor parts are listed for the 2021 Chevrolet Suburban, from GPD, GM GENUINE, WALKER PRODUCTS and 6 other brands. GM GENUINE 55497116 carries the "Popular" badge. 2 parts fit every engine; the other 14 are engine-specific.

Economy: 5 parts, from GPD, HOLSTEIN and ULTRA-POWER. A representative part number is GPD 1814558.

The Standard Replacement section: 10 options from WALKER PRODUCTS, GM GENUINE, WELLS and 3 other brands. GM GENUINE 55497116 is listed in this group.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

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

20 Thermostat parts for the 2021 Chevrolet Suburban come from 10 brands — MOTORAD, CALORSTAT, AUTOTECNICA and 7 other brands. The "Popular" part is ACDELCO 131160.

The Economy section: 3 options from AUTOTECNICA, DORMAN and SKP. AUTOTECNICA GM0718523 is listed in this group.

Heavy Duty: 2 parts, from MOTORAD. A representative part number is MOTORAD 5523187.

The Performance section lists 2 options from MOTORAD — engineered beyond original-equipment specification. MOTORAD 2523160 is listed in this group.

Standard Replacement: 12 parts, from MOTORAD, CALORSTAT, ACDELCO and 4 other brands. A representative part number is ACDELCO 131160.

1 further part sits outside the graded sections, with the same engine-level match.

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

8 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2021 Chevrolet Suburban, from GM GENUINE, FEL-PRO, APEX and 2 other brands. FEL-PRO 36106 carries the "Popular" badge.

Listed part numbers: FEL-PRO 36106, APEX AWO2386 and FEL-PRO 36219, plus the other parts above.

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

6 Thermostat Housing / Water Outlet parts for the 2021 Chevrolet Suburban come from 5 brands — GM GENUINE, DORMAN, FOUR SEASONS and 2 other brands.

The Economy section: 1 option from DORMAN. DORMAN 9022081 is listed in this group.

Standard Replacement: 3 parts, from FOUR SEASONS, GATES and MOTORAD. A representative part number is FOUR SEASONS 85945.

2 further parts sit outside the graded sections, with the same engine-level match.

Part numbers include DORMAN 9022081, FOUR SEASONS 85945 and GATES CO34829, among others listed above.

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. Read more

One part is listed for the 2021 Chevrolet Suburban — GM GENUINE 12587397.

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

12 Water Pump parts for the 2021 Chevrolet Suburban come from 6 brands — GM GENUINE, FVP, GMB and 3 other brands. The "Popular" part is GM GENUINE 12724892.

The Economy section: 4 options from FVP, SKP and US MOTOR WORKS. FVP US8206TS is listed in this group.

Standard Replacement: 4 parts, from GM GENUINE, GMB and GATES. A representative part number is GM GENUINE 12724892.

4 further parts sit outside the graded sections, with the same engine-level match.

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

7 Water Pump Gasket parts are listed for the 2021 Chevrolet Suburban, from FEL-PRO, GM GENUINE, APEX and 1 other brand. FEL-PRO 36110 carries the "Popular" badge.

Part numbers include FEL-PRO 36110, GM GENUINE 2512073 and APEX AWP3308, among others listed above.

This table covers the Water Pump Inlet tubes. Read more

2 Water Pump Inlet Tube parts for the 2021 Chevrolet Suburban come from GM GENUINE.

This group includes GM GENUINE 55496798 and GM GENUINE 55496921.