2025 Lexus ES350 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

9 Coolant / Antifreeze parts for the 2025 Lexus ES350 come from 4 brands — PRESTONE, VALVOLINE, AISIN and 1 other brand. 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 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, PENTOSIN and VALVOLINE supply 3 parts: built to original-equipment specification. A representative part number is AISIN ACT002.

Listed part numbers: PRESTONE AF2100, PRESTONE AF3055 and PRESTONE AF3100, plus the other parts above.

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

3 Radiator parts for the 2025 Lexus ES350 come from 3 brands — TECHPRO, NISSENS and TYC.

The Economy section: 1 option from TECHPRO. TECHPRO TO3010364 is listed in this group.

Standard Replacement: 2 parts, from NISSENS and TYC. A representative part number is NISSENS 606786.

Listed part numbers: TECHPRO TO3010364, NISSENS 606786 and TYC 13670.

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

4 Radiator Cap parts for the 2025 Lexus ES350 come from 3 brands — MOTORAD, GATES and SKP.

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: 3 parts, from GATES, MOTORAD and SKP. A representative part number is GATES 31412.

Listed part numbers: MOTORAD ST37, GATES 31412 and MOTORAD T37, plus the other parts above.

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

4 Radiator Fan Assembly parts are listed for the 2025 Lexus ES350, from TECHPRO, ACKOJA, AGILITY and 1 other brand.

Economy: 1 part, from TECHPRO. A representative part number is TECHPRO TO3115204.

The Standard Replacement section: 3 options from ACKOJA, AGILITY and TYC. ACKOJA A70010012 is listed in this group.

Part numbers include TECHPRO TO3115204, ACKOJA A70010012 and AGILITY 6010546, among others listed above.

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 2025 Lexus ES350.

Listed part numbers: GATES 52054 and GATES 52056.

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

4 Temperature Sender / Sensor parts for the 2025 Lexus ES350 come from 4 brands — NISSENS, STANDARD MOTOR PRODUCTS, WALKER PRODUCTS and 1 other brand.

Listed part numbers: NISSENS 207157, STANDARD MOTOR PRODUCTS TX319 and WALKER PRODUCTS 2112012, 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

3 Thermostat parts are listed for the 2025 Lexus ES350, from AISIN, FOUR SEASONS and MOTORAD.

This group includes AISIN THT024, FOUR SEASONS 86316 and MOTORAD 1049188.

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

2 Thermostat Housing / Water Outlet parts are listed for the 2025 Lexus ES350, from DORMAN and MOTORAD.

Economy: 1 part, from DORMAN. A representative part number is DORMAN 9025932.

The Standard Replacement section: 1 option from MOTORAD. MOTORAD CH2093 is listed in this group.

Listed part numbers: DORMAN 9025932 and MOTORAD CH2093.

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

7 Water Pump parts are listed for the 2025 Lexus ES350, from BECK/ARNLEY, FVP, US MOTOR WORKS and 4 other brands. AISIN WPT808 carries the "Popular" badge.

Economy: 3 parts, from BECK/ARNLEY, FVP and US MOTOR WORKS. A representative part number is BECK/ARNLEY 1312538.

The Standard Replacement section: 4 options from AISIN, GATES, DAYCO and 1 other brand. AISIN WPT808 is listed in this group.

This group includes AISIN WPT808, BECK/ARNLEY 1312538 and FVP US8150 and the remaining parts above.