2021 Toyota Corolla 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

18 Coolant / Antifreeze parts are listed for the 2021 Toyota Corolla, from PRESTONE, PEAK, VALVOLINE and 4 other brands. FVP MV5050GAL carries the "Popular" badge. 16 parts fit every engine; the other 2 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 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 8 options from AISIN, VALVOLINE, BECK/ARNLEY and 2 other brands — built to original-equipment specification. AISIN ACT002 is listed in this group.

This table covers the Coolant Hose Connector flanges. Read more

FOUR SEASONS supplies both parts for the 2021 Toyota Corolla.

Part numbers include FOUR SEASONS 85356 and FOUR SEASONS 86352.

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

6 Coolant Reservoir parts for the 2021 Toyota Corolla come from 4 brands — TECHPRO, DORMAN, LARES and 1 other brand. The "Popular" part is DORMAN 603752. 4 parts fit every engine; the other 2 are engine-specific.

This group includes DORMAN 603752, TECHPRO TO3014140 and LARES 37885 and the remaining 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 Toyota Corolla come from 3 brands — MOTORAD, CALORSTAT and GATES. 1 part fits every engine; the other 3 are engine-specific.

Part numbers include CALORSTAT RC0145, GATES 31541 and MOTORAD T51, among others listed above.

This table covers the Cooling Fan control modules. Read more

This group shows a single part: STANDARD MOTOR PRODUCTS CFM111.

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

This group shows a single part: MOTORAD TA9225.

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

24 Radiator parts are listed for the 2021 Toyota Corolla, from KOYORAD, UAC, GPD and 6 other brands. CSF 3859 carries the "Popular" badge.

Economy: 3 parts, from GPD. A representative part number is GPD 13666C.

The Standard Replacement section: 21 options from KOYORAD, UAC, CSF and 5 other brands. CSF 3859 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

9 Radiator Cap parts are listed for the 2021 Toyota Corolla, from MOTORAD, GATES, CALORSTAT and 1 other brand. GATES 31411 carries the "Popular" badge.

The Locking Replacement section lists 1 option from MOTORAD — grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. MOTORAD ST36 is listed in this group.

The Standard Replacement section: 4 options from GATES, CALORSTAT, MOTORAD and 1 other brand. GATES 31411 is listed in this group.

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

Listed part numbers: GATES 31411, MOTORAD ST36 and CALORSTAT RC0047, plus the other parts above.

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 Toyota Corolla come from 9 brands — TECHPRO, TYC, GPD and 6 other brands. The "Popular" part is ULTRA-POWER 624360.

The Economy section: 10 options from TECHPRO, GPD, SKP and 3 other brands. ULTRA-POWER 624360 is listed in this group.

Standard Replacement: 7 parts, from TYC, AGILITY and UAC. A representative part number is AGILITY 6010306.

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

11 Radiator Hose parts for the 2021 Toyota Corolla come from 2 brands — GATES and CONTINENTAL. The "Popular" part is CONTINENTAL 62765.

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

25 Temperature Sender / Sensor parts are listed for the 2021 Toyota Corolla, from STANDARD MOTOR PRODUCTS, BECK/ARNLEY, WALKER PRODUCTS and 11 other brands. ULTRA-POWER 5S1616 carries the "Popular" badge. 2 parts fit every engine; the other 23 are engine-specific.

Economy: 4 parts, from ULTRA-POWER, UNITED MOTOR PRODUCTS, GPD and 1 other brand. A representative part number is ULTRA-POWER 5S1616.

The Standard Replacement section: 21 options from STANDARD MOTOR PRODUCTS, BECK/ARNLEY, WALKER PRODUCTS and 7 other brands. AISIN THSAZ8004 is listed in this group.

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

16 Thermostat parts for the 2021 Toyota Corolla come from 11 brands — AISIN, MOTORAD, BECK/ARNLEY and 8 other brands. The "Popular" part is AISIN THT017.

The Economy section: 2 options from AUTOTECNICA and SKP. AUTOTECNICA TY0716357 is listed in this group.

Standard Replacement: 10 parts, from AISIN, MOTORAD, BECK/ARNLEY and 4 other brands. A representative part number is AISIN THT017.

4 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

13 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2021 Toyota Corolla, from FEL-PRO, APEX, ELRING and 4 other brands. AISIN THP101 carries the "Popular" badge.

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

7 Thermostat Housing / Water Outlet parts for the 2021 Toyota Corolla come from 4 brands — MOTORAD, DORMAN, SKP and 1 other brand. The "Popular" part is MOTORAD CH2927.

The Economy section: 2 options from DORMAN and SKP. DORMAN 9025927 is listed in this group.

Standard Replacement: 3 parts, from MOTORAD and BECK/ARNLEY. A representative part number is MOTORAD CH2927.

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

Part numbers include MOTORAD CH2927, DORMAN 9025927 and SKP SK9025927, 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 Toyota Corolla — ELRING 775210.

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 Toyota Corolla come from 9 brands — AISIN, BECK/ARNLEY, FVP and 6 other brands. The "Popular" part is AISIN WPT195.

The Economy section: 5 options from BECK/ARNLEY, FVP, SKP and 1 other brand. BECK/ARNLEY 1312556 is listed in this group.

Standard Replacement: 8 parts, from AISIN, GATES, FOUR SEASONS and 2 other brands. A representative part number is AISIN WPT195.

3 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

10 Water Pump Gasket parts are listed for the 2021 Toyota Corolla, from FEL-PRO, APEX, ELRING and 2 other brands.