2021 Toyota Mirai 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

7 Coolant / Antifreeze parts are listed for the 2021 Toyota Mirai, from PRESTONE, VALVOLINE and PENTOSIN. PRESTONE AF2100 carries the "Popular" badge.

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 supplies 1 part: 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 2 options from VALVOLINE and PENTOSIN — built to original-equipment specification. VALVOLINE 675130 is listed in this group.

Part numbers include PRESTONE AF2100, PRESTONE AF3055 and PRESTONE AF3100, among others listed 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

2 Coolant Reservoir Cap parts for the 2021 Toyota Mirai come from 2 brands — CALORSTAT and MOTORAD.

This group includes CALORSTAT RC0145 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

One part is listed for the 2021 Toyota Mirai — FVP RAD13911.

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

One part is listed for the 2021 Toyota Mirai — GATES 31541.

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

This group shows a single part: TECHPRO TO3115228.

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 Toyota Mirai, from GPD, AISIN, STANDARD MOTOR PRODUCTS and 5 other brands. AISIN THSAZ8004 carries the "Popular" badge.

Economy: 1 part, from GPD. A representative part number is GPD 1814549.

The Standard Replacement section: 7 options from AISIN, STANDARD MOTOR PRODUCTS, BECK/ARNLEY and 4 other brands. AISIN THSAZ8004 is listed in this group.

Part numbers include AISIN THSAZ8004, GPD 1814549 and STANDARD MOTOR PRODUCTS TX273, among others listed 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

5 Water Pump parts for the 2021 Toyota Mirai come from 5 brands — AISIN, DAYCO, FOUR SEASONS and 2 other brands. The "Popular" part is AISIN WQT006.

Part numbers include AISIN WQT006, DAYCO DEP1045 and FOUR SEASONS 89072, among others listed above.