2021 Chevrolet Bolt Cooling System Parts

This table covers the Battery 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. Read more

One part is listed for the 2021 Chevrolet Bolt — MOTORAD TA9220.

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

11 Coolant / Antifreeze parts for the 2021 Chevrolet Bolt come from 4 brands — PRESTONE, PEAK, ACDELCO and 1 other brand. The "Popular" part is PRESTONE AF2100.

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 2 options from PEAK and PRESTONE — the catalog's value-priced group. PEAK BQA1GAL 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, PRESTONE, ACDELCO and VALVOLINE supply 4 parts: built to original-equipment specification. A representative part number is ACDELCO 105027.

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

This group shows a single part: GATES 51974.

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

GM GENUINE supplies both parts for the 2021 Chevrolet Bolt.

Part numbers include GM GENUINE 42439125 and GM GENUINE 42439124.

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

One part is listed for the 2021 Chevrolet Bolt — MOTORAD T124.

This table covers the Hose clamps. Read more

5 Hose Clamp parts for the 2021 Chevrolet Bolt come from GM GENUINE. The "Popular" part is GM GENUINE 11570871.

Part numbers include GM GENUINE 11570871, GM GENUINE 90572594 and GM GENUINE 90530642, among others listed above.

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

This group shows a single part: GM GENUINE 42566071.

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

One part is listed for the 2021 Chevrolet Bolt — GM GENUINE 42465901.

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

5 Radiator Fan Assembly parts are listed for the 2021 Chevrolet Bolt, from TECHPRO, VEMO, TYC and 2 other brands. TYC 625230 carries the "Popular" badge.

Economy: 2 parts, from TECHPRO and VEMO. A representative part number is TECHPRO GM3115327.

The Standard Replacement section: 3 options from TYC, FOUR SEASONS and UAC. TYC 625230 is listed in this group.

Part numbers include TYC 625230, TECHPRO GM3115327 and VEMO V51010042, among others listed above.

This table covers the Radiator insulators. Read more

One part is listed for the 2021 Chevrolet Bolt — GM GENUINE 22947568.

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

One part is listed for the 2021 Chevrolet Bolt — GM GENUINE 42465909.

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

6 Temperature Sender / Sensor parts for the 2021 Chevrolet Bolt come from 5 brands — STANDARD MOTOR PRODUCTS, HOLSTEIN, GM GENUINE and 2 other brands. The "Popular" part is GM GENUINE 12641073.

The Economy section: 2 options from HOLSTEIN and STANDARD MOTOR PRODUCTS. HOLSTEIN 2CTS0125 is listed in this group.

Standard Replacement: 4 parts, from GM GENUINE, STANDARD MOTOR PRODUCTS, WALKER PRODUCTS and 1 other brand. A representative part number is GM GENUINE 12641073.

This group includes GM GENUINE 12641073, HOLSTEIN 2CTS0125 and STANDARD MOTOR PRODUCTS TX229T and the remaining parts above.

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

This group shows a single part: DORMAN 66264.

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

3 Water Pump parts are listed for the 2021 Chevrolet Bolt, from FOUR SEASONS, GATES and GM GENUINE.

Listed part numbers: FOUR SEASONS 89071, GATES 41581E and GM GENUINE 13592753.