2026 Chevrolet Corvette 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

12 Coolant / Antifreeze parts for the 2026 Chevrolet Corvette come from 3 brands — PRESTONE, VALVOLINE and ACDELCO. The "Popular" part is PRESTONE AF2100. 6 parts fit every engine; the other 6 are engine-specific.

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 PRESTONE and VALVOLINE — the catalog's value-priced group. PRESTONE AF3100 is listed in this group.

In the Premium grade, PRESTONE supplies 2 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 and ACDELCO supply 5 parts: built to original-equipment specification. A representative part number is VALVOLINE ZXEL1.

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

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

17 Coolant Hose / Pipe parts for the 2026 Chevrolet Corvette come from GM GENUINE. The "Popular" part is GM GENUINE 84369143. 1 part fits every engine; the other 16 are engine-specific.

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

One part is listed for the 2026 Chevrolet Corvette — GM GENUINE 1534833.

This table covers the Coolant Hose Connector flanges. Read more

5 Coolant Hose Connector / Flange parts for the 2026 Chevrolet Corvette come from GM GENUINE. 1 part fits every engine; the other 4 are engine-specific.

This group includes GM GENUINE 84254392, GM GENUINE 23333192 and GM GENUINE 12707272 and the remaining parts above.

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

10 Coolant Hose Retainer / Clip parts for the 2026 Chevrolet Corvette come from GM GENUINE. The "Popular" part is GM GENUINE 11548672. 4 parts fit every engine; the other 6 are engine-specific.

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

GM GENUINE supplies the 3 Coolant Reservoir parts for the 2026 Chevrolet Corvette. All of them fit every engine offered in the 2026 Corvette.

Listed part numbers: GM GENUINE 84889157, GM GENUINE 86381521 and GM GENUINE 86381522.

This table covers the brackets that mount the Coolant Reservoir. 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

GM GENUINE supplies the 4 Coolant Reservoir Bracket parts for the 2026 Chevrolet Corvette. All of them fit every engine offered in the 2026 Corvette.

This group includes GM GENUINE 84238791, GM GENUINE 84529996 and GM GENUINE 84529994 and the remaining parts above.

This table covers the Coolant Reservoir clamps. Read more

3 Coolant Reservoir Clamp parts for the 2026 Chevrolet Corvette come from GM GENUINE.

This group includes GM GENUINE 90572594, GM GENUINE 11611503 and GM GENUINE 19356358.

This table covers the Hose clamps. Read more

11 Hose Clamp parts for the 2026 Chevrolet Corvette come from GM GENUINE. The "Popular" part is GM GENUINE 11570871. 7 parts fit every engine; the other 4 are engine-specific.

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

2 Intercooler parts for the 2026 Chevrolet Corvette come from GM GENUINE.

Part numbers include GM GENUINE 12741244 and GM GENUINE 12741695.

This table covers the Intercooler Air Hose pipes. Read more

2 Intercooler Air Hose / Pipe parts for the 2026 Chevrolet Corvette come from GM GENUINE.

Part numbers include GM GENUINE 12736773 and GM GENUINE 12736774.

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

2 Intercooler Hose / Pipe Bracket parts for the 2026 Chevrolet Corvette come from GM GENUINE.

Part numbers include GM GENUINE 12739545 and GM GENUINE 12739736.

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. Read more

One part is listed for the 2026 Chevrolet Corvette — GM GENUINE 23429489.

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

5 Radiator parts for the 2026 Chevrolet Corvette come from GM GENUINE. The "Popular" part is GM GENUINE 85559349.

Listed part numbers: GM GENUINE 85559349, GM GENUINE 23429489 and GM GENUINE 85559347, plus the other 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

This group shows a single part: ACDELCO RC124.

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

One part is listed for the 2026 Chevrolet Corvette — GM GENUINE 22790134.

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

8 Radiator Fan Assembly parts are listed for the 2026 Chevrolet Corvette, from GM GENUINE, GPD and TYC. GM GENUINE 85670398 carries the "Popular" badge.

Economy: 2 parts, from GPD. A representative part number is GPD 2812479.

The Standard Replacement section: 4 options from GM GENUINE and TYC. GM GENUINE 85670398 is listed in this group.

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

Listed part numbers: GM GENUINE 85670398, GPD 2812479 and GPD 2812480, plus the other parts above.

This table covers the brackets that mount the Radiator Fan Motor. 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

This group shows a single part: GM GENUINE 84524655.

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

13 Radiator Hose parts are listed for the 2026 Chevrolet Corvette, from ACDELCO and GM GENUINE. ACDELCO 85136680 carries the "Popular" badge. 2 parts fit every engine; the other 11 are engine-specific.

This table covers the brackets that mount the Radiator 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

GM GENUINE supplies the 4 Radiator Hose Bracket parts for the 2026 Chevrolet Corvette. 1 part fits every engine; the other 3 are engine-specific.

Listed part numbers: GM GENUINE 84900073, GM GENUINE 85001026 and GM GENUINE 85637186, plus the other parts above.

This table covers the Radiator Insulator sleeves. Read more

One part is listed for the 2026 Chevrolet Corvette — GM GENUINE 84215645.

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

GM GENUINE supplies the 3 Radiator Seal parts for the 2026 Chevrolet Corvette.

Part numbers include GM GENUINE 86819275, GM GENUINE 84280868 and GM GENUINE 84280869.

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 2026 Chevrolet Corvette come from 2 brands — GM GENUINE and HOLSTEIN. The "Popular" part is GM GENUINE 12641073. 2 parts fit every engine; the other 4 are engine-specific.

The Economy section: 2 options from HOLSTEIN. HOLSTEIN 2CTS0334 is listed in this group.

Standard Replacement: 4 parts, from GM GENUINE. A representative part number is GM GENUINE 12641073.

This group includes GM GENUINE 12641073, HOLSTEIN 2CTS0334 and HOLSTEIN 2CTS0184 and the remaining parts above.

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

One part is listed for the 2026 Chevrolet Corvette — GM GENUINE 85542462.

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

This group shows a single part: 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

GM GENUINE supplies the 4 Water Pump parts for the 2026 Chevrolet Corvette.

Part numbers include GM GENUINE 12724330, GM GENUINE 86542615 and GM GENUINE 12725188, among others listed above.

This table covers the brackets that mount the Water Pump. 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 2026 Chevrolet Corvette — GM GENUINE 85112819.

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

2 Water Pump Gasket parts for the 2026 Chevrolet Corvette come from GM GENUINE.

This group includes GM GENUINE 2512066 and GM GENUINE 2512065.

This table covers the Water Pump housings. Read more

This group shows a single part: GM GENUINE 12725190.

This table covers the Water Pump Inlet tubes. Read more

GM GENUINE supplies the 7 Water Pump Inlet Tube parts for the 2026 Chevrolet Corvette. GM GENUINE 85635111 carries the "Popular" badge.

This group includes GM GENUINE 85635111, GM GENUINE 85598810 and GM GENUINE 86291393 and the remaining parts above.

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. Read more

This group shows a single part: GM GENUINE 12668424.