2025 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

11 Coolant / Antifreeze parts are listed for the 2025 Toyota Corolla, from PRESTONE, VALVOLINE, AISIN and 1 other brand. PRESTONE AF2100 carries the "Popular" badge. 9 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, PRESTONE and VALVOLINE supply 2 parts: the catalog's value-priced group. A representative part number is PRESTONE AF3100.

The Premium section lists 3 options from PRESTONE — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.

The Standard Replacement section lists 5 options from AISIN, VALVOLINE and PENTOSIN — built to original-equipment specification. AISIN ACT002 is listed in this group.

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

2 Coolant Reservoir parts for the 2025 Toyota Corolla come from TECHPRO. 1 part fits every engine; the other 1 is engine-specific.

Listed part numbers: TECHPRO TO3014143 and TECHPRO TO3014142.

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

3 Coolant Reservoir Cap parts for the 2025 Toyota Corolla come from 3 brands — CALORSTAT, GATES and MOTORAD.

Part numbers include CALORSTAT RC0145, GATES 31541 and MOTORAD T51.

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

13 Radiator parts are listed for the 2025 Toyota Corolla, from TYC, GPD, TECHPRO and 4 other brands. CSF 3983 carries the "Popular" badge.

Economy: 4 parts, from GPD and TECHPRO. A representative part number is GPD 13945C.

The Standard Replacement section: 9 options from TYC, CSF, KOYORAD and 2 other brands. CSF 3983 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

5 Radiator Cap parts are listed for the 2025 Toyota Corolla, from MOTORAD and CALORSTAT.

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: 2 options from CALORSTAT and MOTORAD. CALORSTAT RC0047 is listed in this group.

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

This group includes MOTORAD ST36, CALORSTAT RC0047 and MOTORAD T36 and the remaining parts above.

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

7 Radiator Fan Assembly parts for the 2025 Toyota Corolla come from 3 brands — TECHPRO, TYC and UAC.

The Economy section: 4 options from TECHPRO. TECHPRO TO3115224 is listed in this group.

Standard Replacement: 3 parts, from TYC and UAC. A representative part number is TYC 625110.

This group includes TECHPRO TO3115224, TECHPRO TO3115219 and TECHPRO TO3115223 and the remaining parts above.

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

9 Temperature Sender / Sensor parts are listed for the 2025 Toyota Corolla, from STANDARD MOTOR PRODUCTS, WELLS, GPD and 3 other brands. STANDARD MOTOR PRODUCTS TX40 carries the "Popular" badge.

Economy: 2 parts, from GPD and HOLSTEIN. A representative part number is GPD 1814549.

The Standard Replacement section: 6 options from STANDARD MOTOR PRODUCTS, WELLS and ACDELCO. STANDARD MOTOR PRODUCTS TX40 is listed in this group.

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

Listed part numbers: STANDARD MOTOR PRODUCTS TX40, GPD 1814549 and HOLSTEIN 2CTS0016, 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

6 Thermostat parts for the 2025 Toyota Corolla come from 5 brands — MOTORAD, AISIN, CALORSTAT and 2 other brands. The "Popular" part is MOTORAD 700180. 1 part fits every engine; the other 5 are engine-specific.

This group includes MOTORAD 700180, AISIN THT032 and CALORSTAT TH725582J and the remaining parts above.

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

One part is listed for the 2025 Toyota Corolla — FEL-PRO 36007.

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

This group shows a single part: MOTORAD CH2109.

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

This group shows a single part: AISIN WPT214.

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

One part is listed for the 2025 Toyota Corolla — FEL-PRO 36010.