2021 Lincoln Aviator 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

14 Coolant / Antifreeze parts for the 2021 Lincoln Aviator come from 5 brands — PRESTONE, PEAK, VALVOLINE and 2 other brands. The "Popular" part is PRESTONE AF3100. 12 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 3 options from PRESTONE, PEAK and VALVOLINE — the catalog's value-priced group. PRESTONE AF3100 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, MOTORCRAFT, AISIN and VALVOLINE supply 4 parts: built to original-equipment specification. A representative part number is MOTORCRAFT VC13G.

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

11 Coolant Hose / Pipe parts for the 2021 Lincoln Aviator come from MOTORCRAFT. The "Popular" part is MOTORCRAFT KM7964. 4 parts fit every engine; the other 7 are engine-specific.

This table covers the seals at the Coolant Hose / Pipe. 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 Coolant Hose / Pipe Seal parts are listed for the 2021 Lincoln Aviator, from FEL-PRO and MOTORCRAFT. All of them fit every engine offered in the 2021 Aviator.

This group includes FEL-PRO 36119 and MOTORCRAFT RG630.

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

4 Coolant Reservoir parts are listed for the 2021 Lincoln Aviator, from TECHPRO, DORMAN and VARIOUS MFR. All of them fit every engine offered in the 2021 Aviator.

This group includes DORMAN 603222, TECHPRO FO3014175 and TECHPRO FO3014176 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

5 Coolant Reservoir Cap parts are listed for the 2021 Lincoln Aviator, from MOTORAD, CALORSTAT, GATES and 2 other brands. MOTORAD T57 carries the "Popular" badge. All of them fit every engine offered in the 2021 Aviator.

Listed part numbers: MOTORAD T57, CALORSTAT RC0150 and GATES 31549, plus the other parts above.

This table covers the Coolant Reservoir retainers and clips. Read more

This group shows a single part: DORMAN 963249D.

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

This group shows a single part: MOTORAD 3043.

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

4 Intercooler parts for the 2021 Lincoln Aviator come from 4 brands — GPD, MOTORCRAFT, TECHPRO and 1 other brand. Every part fits both the 3.0L V6 ELECTRIC/GAS Turbocharged and the 3.0L V6 Turbocharged.

Listed part numbers: GPD 2711564, MOTORCRAFT INTCO23 and TECHPRO FO3012132, 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

8 Radiator parts for the 2021 Lincoln Aviator come from 7 brands — GPD, CSF, TYC and 4 other brands. The "Popular" part is CSF 3940. Every part fits both the 3.0L V6 ELECTRIC/GAS Turbocharged and the 3.0L V6 Turbocharged.

The Economy section: 2 options from GPD. GPD 13853C is listed in this group.

Standard Replacement: 6 parts, from CSF, TYC, KOYORAD and 3 other brands. A representative part number is CSF 3940.

Listed part numbers: CSF 3940, GPD 13853C and GPD 13875C, 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

This group shows a single part: MOTORCRAFT RS531.

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

10 Radiator Fan Assembly parts are listed for the 2021 Lincoln Aviator, from TECHPRO, SKP, GPD and 6 other brands. SKP SK76169 carries the "Popular" badge. 6 parts fit every engine; the other 4 are engine-specific.

Economy: 4 parts, from TECHPRO, SKP and GPD. A representative part number is SKP SK76169.

The Standard Replacement section: 6 options from TYC, AGILITY, FOUR SEASONS and 3 other brands. TYC 624880 is listed in this group.

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

MOTORCRAFT supplies the 8 Radiator Hose parts for the 2021 Lincoln Aviator.

Listed part numbers: MOTORCRAFT KM6671, MOTORCRAFT KM6672 and MOTORCRAFT KM6700, plus the other parts above.

This table covers the Shroud Trim retainers and clips. Read more

This group shows a single part: DORMAN 963249D.

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

9 Temperature Sender / Sensor parts for the 2021 Lincoln Aviator come from 7 brands — MOTORCRAFT, STANDARD MOTOR PRODUCTS, GPD and 4 other brands. The "Popular" part is MOTORCRAFT DY1613. 5 parts fit every engine; the other 4 are engine-specific.

The Economy section: 2 options from GPD and HOLSTEIN. GPD 1814536 is listed in this group.

Standard Replacement: 7 parts, from MOTORCRAFT, STANDARD MOTOR PRODUCTS, DELPHI and 2 other brands. A representative part number is MOTORCRAFT DY1613.

This group includes MOTORCRAFT DY1613, GPD 1814536 and HOLSTEIN 2CTS0298 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

15 Thermostat parts are listed for the 2021 Lincoln Aviator, from MOTORAD, MOTORCRAFT, AISIN and 1 other brand. MOTORAD 655170 carries the "Popular" badge.

The Heavy Duty section: 2 options from MOTORAD. MOTORAD 5655188 is listed in this group.

In the Performance grade, MOTORAD supplies 3 parts: engineered beyond original-equipment specification. A representative part number is MOTORAD 2655188.

The Premium section: 1 option from MOTORAD. MOTORAD 7655188 is listed in this group.

The Standard Replacement section: 9 options from MOTORAD, MOTORCRAFT, AISIN and 1 other brand. MOTORAD 655170 is listed in this group.

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

5 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2021 Lincoln Aviator come from 4 brands — FEL-PRO, APEX, MOTORAD and 1 other brand. The "Popular" part is FEL-PRO 35991.

This group includes FEL-PRO 35991, APEX AWO2306 and FEL-PRO 36117 and the remaining parts above.

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

MOTORCRAFT supplies both parts for the 2021 Lincoln Aviator.

Listed part numbers: MOTORCRAFT RH277 and MOTORCRAFT RH278.

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

6 Water Pump parts are listed for the 2021 Lincoln Aviator, from FVP, MOTORCRAFT, GMB and 2 other brands. MOTORCRAFT PW679 carries the "Popular" badge.

Economy: 1 part, from FVP. A representative part number is FVP US8220.

The Standard Replacement section: 4 options from MOTORCRAFT, FVP, GMB and 1 other brand. MOTORCRAFT PW679 is listed in this group.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

This group includes MOTORCRAFT PW679, FVP US8220 and FVP 1253500 and the remaining 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: APEX AWP3313.

This table covers the Water Pump Seal O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove. Read more

One part is listed for the 2021 Lincoln Aviator — FEL-PRO 36118.