2020 Toyota Highlander Cooling System Parts

This table covers the Battery 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 2020 Toyota Highlander — MOTORAD TA9247.

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 2020 Toyota Highlander come from 7 brands — PRESTONE, PEAK, VALVOLINE and 4 other brands. The "Popular" part is FVP MV5050GAL. 17 parts fit every engine; the other 2 are engine-specific.

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 4 options from FVP, PEAK, PRESTONE and 1 other brand — the catalog's value-priced group. FVP MV5050GAL 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, AISIN, VALVOLINE, 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 Coolant filler necks. Read more

One part is listed for the 2020 Toyota Highlander — FOUR SEASONS 86372.

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

4 Coolant Reservoir Cap parts are listed for the 2020 Toyota Highlander, from MOTORAD, CALORSTAT and GATES. 1 part fits every engine; the other 3 are engine-specific.

Part numbers include CALORSTAT RC0145, GATES 31541 and MOTORAD T51, among others listed above.

This table covers the adapters used to pressure-test this cooling system. Read more

2 Cooling System Tester Adapter parts for the 2020 Toyota Highlander come from MOTORAD. Every part fits both the 2.5L L4 ELECTRIC/GAS and the 3.5L V6.

Listed part numbers: MOTORAD 3124 and MOTORAD 3125.

This table covers the intercoolers that cool turbo or supercharger charge air. Read more

This group shows a single part: FVP RAD13907.

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

3 Inverter Cooler parts are listed for the 2020 Toyota Highlander, from CSF, GPD and TECHPRO.

Part numbers include CSF 3971, GPD 13907C and TECHPRO TO3011109.

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

7 Radiator parts for the 2020 Toyota Highlander come from 7 brands — CSF, TYC, AGILITY and 4 other brands. The "Popular" part is CSF 3970. 6 parts fit every engine; the other 1 is engine-specific.

This group includes CSF 3970, TYC 13842 and AGILITY 8013842 and the remaining 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

7 Radiator Cap parts for the 2020 Toyota Highlander come from 4 brands — MOTORAD, GATES, SKP and 1 other brand. The "Popular" part is GATES 31411. 3 parts fit every engine; the other 4 are engine-specific.

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 ST36.

Standard Replacement: 6 parts, from GATES, SKP, CALORSTAT and 1 other brand. A representative part number is GATES 31411.

This group includes GATES 31411, MOTORAD ST36 and GATES 31412 and the remaining 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 2020 Toyota Highlander, from GPD, TECHPRO, VARIOUS MFR and 2 other brands. TYC 624980 carries the "Popular" badge. 4 parts fit every engine; the other 1 is engine-specific.

Economy: 3 parts, from GPD, TECHPRO and VARIOUS MFR. A representative part number is GPD 2812263.

The Standard Replacement section: 2 options from TYC and UAC. TYC 624980 is listed in this group.

Listed part numbers: TYC 624980, GPD 2812263 and TECHPRO TO3115214, plus the other parts 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

CONTINENTAL supplies the 5 Radiator Hose parts for the 2020 Toyota Highlander.

This group includes CONTINENTAL 66231, CONTINENTAL 67231 and CONTINENTAL 62269 and the remaining parts above.

This table covers the Radiator Upper Air Baffle retainers and clips. Read more

DORMAN supplies both parts for the 2020 Toyota Highlander. All of them fit every engine offered in the 2020 Highlander.

Part numbers include DORMAN 963134D and DORMAN 700675.

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

13 Temperature Sender / Sensor parts for the 2020 Toyota Highlander come from 7 brands — GPD, AISIN, STANDARD MOTOR PRODUCTS and 4 other brands. The "Popular" part is AISIN THSAZ8004.

The Economy section: 2 options from GPD. GPD 1814549 is listed in this group.

Standard Replacement: 11 parts, from AISIN, STANDARD MOTOR PRODUCTS, BECK/ARNLEY and 3 other brands. A representative part number is AISIN THSAZ8004.

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

13 Thermostat parts are listed for the 2020 Toyota Highlander, from MOTORAD, AISIN, BECK/ARNLEY and 4 other brands. AISIN THT024 carries the "Popular" badge.

Economy: 1 part, from DORMAN. A representative part number is DORMAN 9025216.

The Standard Replacement section: 6 options from MOTORAD, AISIN, BECK/ARNLEY and 2 other brands. AISIN THT024 is listed in this group.

6 ungrouped parts are not assigned to a grade, with the same engine-level match.

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

4 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2020 Toyota Highlander come from MAHLE / CLEVITE.

Part numbers include MAHLE / CLEVITE C33798, MAHLE / CLEVITE C33765 and MAHLE / CLEVITE C33835, among others listed above.

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

8 Thermostat Housing / Water Outlet parts are listed for the 2020 Toyota Highlander, from GATES, MOTORAD, SKP and 1 other brand. SKP SK86328 carries the "Popular" badge.

Economy: 1 part, from SKP. A representative part number is SKP SK86328.

The Standard Replacement section: 5 options from GATES, MOTORAD and BECK/ARNLEY. BECK/ARNLEY 1470105 is listed in this group.

2 ungrouped parts are not assigned to a grade, with the same engine-level match.

Listed part numbers: SKP SK86328, BECK/ARNLEY 1470105 and GATES CO35085, plus the other parts above.

This table covers the gaskets that seal the Water Inlet. 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: AJUSA 01184900.

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

18 Water Pump parts are listed for the 2020 Toyota Highlander, from FVP, BECK/ARNLEY, SKP and 5 other brands. BECK/ARNLEY 1312557 carries the "Popular" badge.

Economy: 7 parts, from BECK/ARNLEY, SKP, FVP and 1 other brand. A representative part number is BECK/ARNLEY 1312557.

The Standard Replacement section: 8 options from AISIN, FVP, GMB and 2 other brands. AISIN WPT207 is listed in this group.

3 ungrouped parts are not assigned to a grade, with the same engine-level match.

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

2 Water Pump Gasket parts for the 2020 Toyota Highlander come from 2 brands — MAHLE / CLEVITE and VICTOR REINZ.

This group includes MAHLE / CLEVITE K33776 and VICTOR REINZ 711790100.