2022 Lexus RX450HL 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

16 Coolant / Antifreeze parts for the 2022 Lexus RX450HL come from 6 brands — PRESTONE, PEAK, BECK/ARNLEY and 3 other brands. The "Popular" part is PRESTONE AF2100.

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 PEAK and PRESTONE — the catalog's value-priced group. PEAK BQA1GAL is listed in this group.

In the Heavy Duty grade, PRESTONE supplies 1 part: rated for severe service. A representative part number is PRESTONE AFC12100.

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, VALVOLINE, AISIN and 2 other brands supply 7 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 RX450HL, from CALORSTAT, GATES and MOTORAD.

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

This table covers the Cooling Fan control modules. Read more

3 Cooling Fan Control Module parts are listed for the 2022 Lexus RX450HL, from ACKOJA, GATES and SKP.

This group includes ACKOJA A70790004, GATES FCM143 and SKP SKFCM143.

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

One part is listed for the 2022 Lexus RX450HL — TECHPRO TO3011107.

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

6 Radiator parts for the 2022 Lexus RX450HL come from 6 brands — CSF, DENSO, NISSENS and 3 other brands. The "Popular" part is CSF 3820.

Part numbers include CSF 3820, DENSO 2219596 and NISSENS 606544, among others listed above.

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 for the 2022 Lexus RX450HL come from 4 brands — MOTORAD, GATES, CALORSTAT and 1 other brand. The "Popular" part is GATES 31412.

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 ST37.

Standard Replacement: 4 parts, from GATES, CALORSTAT, MOTORAD and 1 other brand. A representative part number is GATES 31412.

Part numbers include GATES 31412, MOTORAD ST37 and CALORSTAT RC0040, among others listed above.

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

One part is listed for the 2022 Lexus RX450HL — TECHPRO LX3115144.

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

GATES supplies both parts for the 2022 Lexus RX450HL.

Part numbers include GATES 51559 and GATES 51562.

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

6 Temperature Sender / Sensor parts for the 2022 Lexus RX450HL come from 6 brands — GPD, AISIN, STANDARD MOTOR PRODUCTS and 3 other brands. The "Popular" part is AISIN THSAZ8003.

The Economy section: 1 option from GPD. GPD 1814521 is listed in this group.

Standard Replacement: 5 parts, from AISIN, STANDARD MOTOR PRODUCTS, BECK/ARNLEY and 2 other brands. A representative part number is AISIN THSAZ8003.

This group includes AISIN THSAZ8003, GPD 1814521 and STANDARD MOTOR PRODUCTS TX273 and the remaining 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

5 Thermostat parts are listed for the 2022 Lexus RX450HL, from DORMAN, AISIN, FOUR SEASONS and 2 other brands. AISIN THT021 carries the "Popular" badge.

Economy: 1 part, from DORMAN. A representative part number is DORMAN 9025212.

The Standard Replacement section: 4 options from AISIN, FOUR SEASONS, MAHLE / CLEVITE and 1 other brand. AISIN THT021 is listed in this group.

This group includes AISIN THT021, DORMAN 9025212 and FOUR SEASONS 86321 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

2 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2022 Lexus RX450HL come from MAHLE / CLEVITE.

Part numbers include MAHLE / CLEVITE C33835 and MAHLE / CLEVITE C33837.

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

12 Water Pump parts are listed for the 2022 Lexus RX450HL, from AISIN, US MOTOR WORKS, ACKOJA and 8 other brands. US MOTOR WORKS US8150 carries the "Popular" badge.

Economy: 5 parts, from US MOTOR WORKS, ACKOJA, BECK/ARNLEY and 2 other brands. A representative part number is US MOTOR WORKS US8150.

The Standard Replacement section: 7 options from AISIN, GATES, DAYCO and 3 other brands. AISIN WPT808 is listed in this group.