2023 Lexus NX350 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

19 Coolant / Antifreeze parts for the 2023 Lexus NX350 come from 6 brands — PRESTONE, VALVOLINE, PEAK and 3 other brands. The "Popular" part is VALVOLINE ZXG051.

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 Heavy Duty grade, VALVOLINE and PRESTONE supply 2 parts: rated for severe service. A representative part number is VALVOLINE ZXG051.

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, VALVOLINE, AISIN, BECK/ARNLEY and 2 other brands supply 8 parts: built to original-equipment specification. A representative part number is AISIN ACT002.

This table covers the overflow / expansion tanks that hold extra coolant. Read more

3 Coolant Reservoir parts are listed for the 2023 Lexus NX350, from AUTOTECNICA, TECHPRO and VARIOUS MFR.

This group includes AUTOTECNICA TY0724561 and TECHPRO TO3014141 and the remaining parts 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

6 Coolant Reservoir Cap parts are listed for the 2023 Lexus NX350, from MOTORAD, CALORSTAT and GATES. GATES 31541 carries the "Popular" badge.

This group includes GATES 31541, MOTORAD T51 and CALORSTAT RC0170 and the remaining 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

5 Radiator parts for the 2023 Lexus NX350 come from 5 brands — GPD, DENSO, CSF and 2 other brands. The "Popular" part is DENSO 2219627.

The Economy section: 1 option from GPD. GPD 13670C is listed in this group.

Standard Replacement: 4 parts, from DENSO, CSF, KOYORAD and 1 other brand. A representative part number is DENSO 2219627.

Listed part numbers: DENSO 2219627, GPD 13670C and CSF 3999, plus the other parts 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

4 Radiator Cap parts for the 2023 Lexus NX350 come from 4 brands — CALORSTAT, GATES, MOTORAD and 1 other brand.

This group includes CALORSTAT RC0047, GATES 31411 and MOTORAD T36 and the remaining parts above.

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

2 Radiator Fan Assembly parts are listed for the 2023 Lexus NX350, from TECHPRO and VARIOUS MFR.

Listed part numbers: TECHPRO TO3115204, plus the other 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

10 Temperature Sender / Sensor parts for the 2023 Lexus NX350 come from 8 brands — STANDARD MOTOR PRODUCTS, WELLS, GPD and 5 other brands. The "Popular" part is DENSO 1931000.

The Economy section: 3 options from GPD, HOLSTEIN and ULTRA-POWER. GPD 1814549 is listed in this group.

Standard Replacement: 7 parts, from STANDARD MOTOR PRODUCTS, WELLS, DENSO and 2 other brands. A representative part number is DENSO 1931000.

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

MOTORAD supplies both parts for the 2023 Lexus NX350.

Part numbers include MOTORAD CH2175 and MOTORAD CH3014.

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

8 Water Pump parts are listed for the 2023 Lexus NX350, from FVP, AISIN, GATES and 4 other brands. AISIN WPT211 carries the "Popular" badge.

Listed part numbers: AISIN WPT211, GATES 41564E and FOUR SEASONS 89072, plus the other parts above.

This table covers the gaskets between the water pump and the block or housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

This group shows a single part: VICTOR REINZ 711790100.