2022 Lexus IS300 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

15 Coolant / Antifreeze parts for the 2022 Lexus IS300 come from 6 brands — PRESTONE, PEAK, VALVOLINE and 3 other brands. The "Popular" part is PRESTONE AF2100. Every part fits both the 2.0L L4 Turbocharged and the 3.5L V6.

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 3 options from PEAK, PRESTONE and VALVOLINE — the catalog's value-priced group. PEAK BQA1GAL is listed in this group.

In the Premium grade, PRESTONE and PEAK supply 5 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.

In the Standard Replacement grade, BECK/ARNLEY, AISIN, VALVOLINE and 2 other brands supply 6 parts: built to original-equipment specification. A representative part number is AISIN ACT002.

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 are listed for the 2022 Lexus IS300, from CALORSTAT, GATES and MOTORAD. All of them fit every engine offered in the 2022 IS300.

This group includes CALORSTAT RC0145, GATES 31541 and MOTORAD T51.

This table covers the Cooling Fan control modules. Read more

2 Cooling Fan Control Module parts are listed for the 2022 Lexus IS300, from ACKOJA and STANDARD MOTOR PRODUCTS.

Listed part numbers: ACKOJA A70790004 and STANDARD MOTOR PRODUCTS RY1890.

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

8 Radiator parts for the 2022 Lexus IS300 come from 5 brands — GPD, TYC, DENSO and 2 other brands. The "Popular" part is DENSO 2219578. 1 part fits every engine; the other 7 are engine-specific.

The Economy section: 3 options from GPD. GPD 13912C is listed in this group.

Standard Replacement: 5 parts, from TYC, DENSO, OSC and 1 other brand. A representative part number is DENSO 2219578.

Listed part numbers: DENSO 2219578, GPD 13912C and GPD 13612C, plus the other parts above.

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

5 Radiator Fan Assembly parts are listed for the 2022 Lexus IS300, from DORMAN, GPD, FOUR SEASONS and 2 other brands.

Economy: 2 parts, from DORMAN and GPD. A representative part number is DORMAN 620498.

The Standard Replacement section: 2 options from FOUR SEASONS and UAC. FOUR SEASONS 76335 is listed in this group.

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

This group includes DORMAN 620498, GPD 2812007 and FOUR SEASONS 76335 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

17 Temperature Sender / Sensor parts for the 2022 Lexus IS300 come from 11 brands — GPD, AISIN, DELPHI and 8 other brands. The "Popular" part is AISIN THSAZ8003.

The Economy section: 4 options from GPD, HOLSTEIN and UNITED MOTOR PRODUCTS. GPD 1712514 is listed in this group.

Standard Replacement: 13 parts, from AISIN, DELPHI, STANDARD MOTOR PRODUCTS and 5 other brands. A representative part number is AISIN THSAZ8003.

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

9 Thermostat parts are listed for the 2022 Lexus IS300, from MOTORAD, BECK/ARNLEY, AISIN and 3 other brands. AISIN THT029 carries the "Popular" badge. 1 part fits every engine; the other 8 are engine-specific.

Part numbers include AISIN THT029, JAPANESE OE WHTYL87 and BECK/ARNLEY 1430971, among others listed 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

2 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2022 Lexus IS300 come from MAHLE / CLEVITE.

This group includes MAHLE / CLEVITE C33835 and MAHLE / CLEVITE C33837.

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

One part is listed for the 2022 Lexus IS300 — MOTORAD CH3174.

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

15 Water Pump parts are listed for the 2022 Lexus IS300, from US MOTOR WORKS, AISIN, GATES and 7 other brands. AISIN WPT203 carries the "Popular" badge. 2 parts fit every engine; the other 13 are engine-specific.

Economy: 5 parts, from US MOTOR WORKS, BECK/ARNLEY, FVP and 1 other brand. A representative part number is BECK/ARNLEY 1312538.

The Standard Replacement section: 10 options from AISIN, GATES, GMB and 3 other brands. AISIN WPT203 is listed in this group.