2026 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 for the 2026 Toyota Corolla come from 4 brands — PRESTONE, VALVOLINE, AISIN and 1 other brand. The "Popular" part is PRESTONE AF2100. 9 parts fit every engine; the other 2 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 3 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.

In the Standard Replacement grade, AISIN, VALVOLINE and PENTOSIN supply 5 parts: built to original-equipment specification. A representative part number is AISIN ACT002.

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

10 Radiator parts for the 2026 Toyota Corolla come from 5 brands — GPD, TYC, KOYORAD and 2 other brands. The "Popular" part is KOYORAD A13945.

The Economy section: 3 options from GPD. GPD 13945C is listed in this group.

Standard Replacement: 7 parts, from TYC, KOYORAD, CSF and 1 other brand. A representative part number is KOYORAD A13945.

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 for the 2026 Toyota Corolla come from MOTORAD.

In the Locking Replacement grade, MOTORAD supplies 1 part: grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. A representative part number is MOTORAD ST36.

Standard Replacement: 1 part, from MOTORAD. A representative part number is MOTORAD T36.

Listed part numbers: MOTORAD ST36 and MOTORAD T36.

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

TYC supplies both parts for the 2026 Toyota Corolla.

Listed part numbers: TYC 625110 and TYC 625180.

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

3 Temperature Sender / Sensor parts for the 2026 Toyota Corolla come from NISSENS.

Part numbers include NISSENS 207098, NISSENS 207157 and NISSENS 207139.

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 Toyota Corolla — MOTORAD 1454180.