2021 Honda CR-V 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 Honda CR-V, from PRESTONE, PEAK, VALVOLINE and 4 other brands. FVP MV5050GAL carries the "Popular" badge. 16 parts fit every engine; the other 1 is 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, PRESTONE, PEAK 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 5 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 6 options from BECK/ARNLEY, VALVOLINE, AISIN and 2 other brands — built to original-equipment specification. VALVOLINE 861398 is listed in this group.

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

4 Coolant Hose / Pipe Seal parts for the 2021 Honda CR-V come from 3 brands — AJUSA, MAHLE / CLEVITE and VICTOR REINZ. 3 parts fit every engine; the other 1 is engine-specific.

Listed part numbers: AJUSA 16022400, AJUSA 16022450 and MAHLE / CLEVITE C32870, plus the other parts above.

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

4 Coolant Reservoir parts for the 2021 Honda CR-V come from 3 brands — TECHPRO, GPD and VARIOUS MFR.

Listed part numbers: GPD 2411259, TECHPRO HO3014144 and TECHPRO HO3014143, 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

4 Coolant Reservoir Cap parts for the 2021 Honda CR-V come from 2 brands — MOTORAD and CALORSTAT.

This group includes CALORSTAT RC0174, MOTORAD T16R and MOTORAD T108 and the remaining parts above.

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

MOTORAD supplies the 4 Cooling System Tester Adapter parts for the 2021 Honda CR-V.

Part numbers include MOTORAD 3121, MOTORAD 3122 and MOTORAD 3124, among others listed above.

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

7 Intercooler parts are listed for the 2021 Honda CR-V, from NISSENS, TYC, AGILITY and 4 other brands. NISSENS 961542 carries the "Popular" badge. 1 part fits every engine; the other 6 are engine-specific.

Listed part numbers: NISSENS 961542, TYC 18097 and AGILITY 5010035, plus the other parts above.

This table covers the Intercooler Air Hose pipes. Read more

5 Intercooler Air Hose / Pipe parts are listed for the 2021 Honda CR-V, from GATES, ACKOJA and DORMAN. GATES 26566 carries the "Popular" badge.

Listed part numbers: GATES 26566, ACKOJA A269676 and DORMAN 667749, plus the other parts above.

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

4 Inverter Cooler parts for the 2021 Honda CR-V come from 4 brands — CSF, FVP, GPD and 1 other brand.

Listed part numbers: CSF 3986, FVP RAD13897 and GPD 2611444, plus the other parts 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

14 Radiator parts are listed for the 2021 Honda CR-V, from UAC, TECHPRO, CSF and 7 other brands. CSF 3852 carries the "Popular" badge.

Economy: 3 parts, from TECHPRO and GPD. A representative part number is GPD 13888C.

The Standard Replacement section: 11 options from UAC, CSF, TYC and 5 other brands. CSF 3852 is listed in this group.

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 Honda CR-V, from CALORSTAT and MOTORAD.

Listed part numbers: CALORSTAT RC0040 and MOTORAD T37.

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

10 Radiator Fan Assembly parts for the 2021 Honda CR-V come from 7 brands — GPD, TECHPRO, UAC and 4 other brands. The "Popular" part is SKP SK6010309.

The Economy section: 5 options from GPD, TECHPRO and SKP. SKP SK6010309 is listed in this group.

Standard Replacement: 5 parts, from UAC, TYC, AGILITY and 1 other brand. A representative part number is TYC 601550.

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 Honda CR-V come from 2 brands — CONTINENTAL and GATES.

Part numbers include CONTINENTAL 67334, CONTINENTAL 67333 and GATES 51385, among others listed above.

This table covers the Radiator insulators. Read more

This group shows a single part: TECHPRO HO3013100.

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 927241.

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

8 Temperature Sender / Sensor parts are listed for the 2021 Honda CR-V, from NTK, CALORSTAT, GPD and 4 other brands. WALKER PRODUCTS 2111080 carries the "Popular" badge. 7 parts fit every engine; the other 1 is engine-specific.

Economy: 3 parts, from CALORSTAT, GPD and HOLSTEIN. A representative part number is CALORSTAT WS3039.

The Standard Replacement section: 5 options from NTK, WALKER PRODUCTS, WELLS and 1 other brand. WALKER PRODUCTS 2111080 is listed in this group.

Listed part numbers: WALKER PRODUCTS 2111080, CALORSTAT WS3039 and GPD 1712488, plus the other 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

10 Thermostat parts for the 2021 Honda CR-V come from 6 brands — AISIN, MOTORAD, GATES and 3 other brands. The "Popular" part is GATES 33340S.

Heavy Duty: 1 part, from GATES. A representative part number is GATES 33340S.

Standard Replacement: 6 parts, from AISIN, MOTORAD, CALORSTAT and 1 other brand. A representative part number is CALORSTAT TH626778.

3 further parts sit 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

6 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2021 Honda CR-V, from FEL-PRO and MAHLE / CLEVITE.

Part numbers include FEL-PRO 36158, FEL-PRO 36160 and FEL-PRO 36173, among others listed above.

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

5 Thermostat Housing / Water Outlet parts for the 2021 Honda CR-V come from 2 brands — MOTORAD and FOUR SEASONS.

Listed part numbers: FOUR SEASONS 86279, MOTORAD CH1023 and MOTORAD CH1022, plus the other parts 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

16 Water Pump parts for the 2021 Honda CR-V come from 11 brands — FVP, FOUR SEASONS, GMB and 8 other brands. The "Popular" part is US MOTOR WORKS US8145.

The Economy section: 4 options from US MOTOR WORKS, ACKOJA, BECK/ARNLEY and 1 other brand. US MOTOR WORKS US8145 is listed in this group.

Standard Replacement: 5 parts, from GATES, DAYCO, FOUR SEASONS and 2 other brands. A representative part number is GATES 41215.

7 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

4 Water Pump Gasket parts are listed for the 2021 Honda CR-V, from FEL-PRO and MAHLE / CLEVITE.

This group includes FEL-PRO 36157, FEL-PRO 36174 and MAHLE / CLEVITE K33409 and the remaining parts above.