2021 Toyota Tacoma Cooling System Parts

This table covers the Bypass pipes. Read more

2 Bypass Pipe parts for the 2021 Toyota Tacoma come from 2 brands — DORMAN and SKP.

Part numbers include DORMAN 626554 and SKP SK121409.

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

18 Coolant / Antifreeze parts for the 2021 Toyota Tacoma come from 7 brands — PRESTONE, PEAK, VALVOLINE and 4 other brands. The "Popular" part is FVP MV5050GAL. Every part fits both the 2.7L L4 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 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, BECK/ARNLEY, VALVOLINE and 2 other brands supply 7 parts: built to original-equipment specification. A representative part number is AISIN ACT002.

This table covers the hard pipes and extra hoses in the coolant circuit. Read more

3 Coolant Hose / Pipe parts for the 2021 Toyota Tacoma come from 3 brands — CONTINENTAL, DAYCO and ULTRA-POWER. 1 part fits every engine; the other 2 are engine-specific.

Part numbers include CONTINENTAL 63142, DAYCO 86503 and ULTRA-POWER 626554.

This table covers the Coolant Hose Connector flanges. Read more

This group shows a single part: FOUR SEASONS 85385.

This table covers the gaskets that seal the Coolant Pipe. 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

One part is listed for the 2021 Toyota Tacoma — AJUSA 01366500.

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

One part is listed for the 2021 Toyota Tacoma — MOTORAD T176.

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

2 Cooling System Tester Adapter parts for the 2021 Toyota Tacoma come from MOTORAD. Every part fits both the 2.7L L4 and the 3.5L V6.

Listed part numbers: MOTORAD 3124 and MOTORAD 3125.

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

14 Radiator parts for the 2021 Toyota Tacoma come from 8 brands — CSF, TYC, AGILITY and 5 other brands. The "Popular" part is CSF 3786.

The Economy section: 1 option from TECHPRO. TECHPRO TO3010350 is listed in this group.

Standard Replacement: 6 parts, from CSF, TYC, AGILITY and 3 other brands. A representative part number is CSF 3786.

7 further parts sit outside the graded sections, with the same engine-level match.

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 2021 Toyota Tacoma come from 3 brands — MOTORAD, GATES and SKP. Every part fits both the 2.7L L4 and the 3.5L V6.

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.

Part numbers include MOTORAD ST37, GATES 31412 and MOTORAD T37, among others listed above.

This table covers the Radiator Fan blades. Typical signs include chatter, streaks, or a skip at the top of the stroke. Confirm left and right lengths in the notes — they are often different. Read more

SKP supplies both parts for the 2021 Toyota Tacoma.

Listed part numbers: SKP SK959903 and SKP SK959901.

This table covers the Radiator Fan clutches. Typical signs include slip at highway speed, chatter on takeoff, or a pedal that stays low. Resurface or replace the flywheel with the clutch — a heat-checked flywheel wastes the new disc. Read more

14 Radiator Fan Clutch parts for the 2021 Toyota Tacoma come from 8 brands — HAYDEN, US MOTOR WORKS, FOUR SEASONS and 5 other brands. The "Popular" part is HAYDEN 2670.

This table covers the shrouds that duct air through the fan and radiator. Read more

2 Radiator Fan Shroud parts for the 2021 Toyota Tacoma come from 2 brands — DORMAN and VARIOUS MFR.

Part numbers include DORMAN 621655 and VARIOUS MFR TO3110190.

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

11 Radiator Hose parts are listed for the 2021 Toyota Tacoma, from GATES, CONTINENTAL, DAYCO and 1 other brand. ACDELCO 24554L carries the "Popular" badge.

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

21 Temperature Sender / Sensor parts for the 2021 Toyota Tacoma come from 14 brands — STANDARD MOTOR PRODUCTS, GPD, DELPHI and 11 other brands. The "Popular" part is ULTRA-POWER 5S1616.

The Economy section: 5 options from GPD, ULTRA-POWER, HOLSTEIN and 1 other brand. ULTRA-POWER 5S1616 is listed in this group.

Standard Replacement: 16 parts, from STANDARD MOTOR PRODUCTS, DELPHI, BECK/ARNLEY and 7 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

13 Thermostat parts are listed for the 2021 Toyota Tacoma, from MOTORAD, DORMAN, SKP and 5 other brands. AISIN THT025 carries the "Popular" badge.

Economy: 5 parts, from DORMAN, SKP and AUTOTECNICA. A representative part number is AUTOTECNICA TY0717859.

The Standard Replacement section: 7 options from MOTORAD, FOUR SEASONS, AISIN and 2 other brands. AISIN THT025 is listed in this group.

1 ungrouped part is 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

7 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2021 Toyota Tacoma come from 6 brands — MAHLE / CLEVITE, CALORSTAT, AJUSA and 3 other brands. The "Popular" part is CALORSTAT J96.

Part numbers include CALORSTAT J96, AJUSA 01153200 and APEX AWO2271, among others listed above.

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

4 Thermostat Housing / Water Outlet parts are listed for the 2021 Toyota Tacoma, from DORMAN, MOTORAD, FOUR SEASONS and 1 other brand.

Economy: 1 part, from DORMAN. A representative part number is DORMAN 9025935.

The Standard Replacement section: 1 option from MOTORAD. MOTORAD CH5385 is listed in this group.

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

Listed part numbers: DORMAN 9025935, MOTORAD CH5385 and FOUR SEASONS 86371, 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

2 Water Inlet Gasket parts for the 2021 Toyota Tacoma come from 2 brands — APEX and FEL-PRO.

Listed part numbers: APEX AWO2047 and FEL-PRO 35445.

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 2021 Toyota Tacoma, from BECK/ARNLEY, FVP, AISIN and 4 other brands. US MOTOR WORKS US9293 carries the "Popular" badge.

Economy: 5 parts, from BECK/ARNLEY, FVP and US MOTOR WORKS. A representative part number is US MOTOR WORKS US9293.

The Standard Replacement section: 7 options from AISIN, DAYCO, GATES and 1 other brand. AISIN WPT044 is listed in this group.

This table covers the Water Pump & Fan Clutch assemblies. Read more

One part is listed for the 2021 Toyota Tacoma — GMB 1700003.

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

5 Water Pump Gasket parts for the 2021 Toyota Tacoma come from 5 brands — FEL-PRO, AJUSA, APEX and 2 other brands. The "Popular" part is FEL-PRO 35643.

Listed part numbers: FEL-PRO 35643, AJUSA 01235900 and APEX AWP3136, plus the other parts above.