2026 Ford Explorer 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

6 Coolant / Antifreeze parts for the 2026 Ford Explorer come from 2 brands — PRESTONE and VALVOLINE. The "Popular" part is PRESTONE AF3100. Every part fits both the 2.3L L4 Turbocharged and the 3.0L V6 Turbocharged.

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 Heavy Duty grade, PRESTONE supplies 1 part: rated for severe service. A representative part number is PRESTONE AFC12100.

In the Premium grade, PRESTONE supplies 2 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.

This group includes PRESTONE AF3100, PRESTONE AF3055 and VALVOLINE 719009 and the remaining parts above.

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

5 Coolant Hose / Pipe parts for the 2026 Ford Explorer come from MOTORCRAFT. 1 part fits every engine; the other 4 are engine-specific.

This group includes MOTORCRAFT KM7760, MOTORCRAFT KH1325 and MOTORCRAFT KM6994 and the remaining parts above.

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

One part is listed for the 2026 Ford Explorer — MOTORCRAFT RG630.

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 2026 Ford Explorer — MOTORAD T57.

This table covers the seals at the Coolant Reservoir. 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

This group shows a single part: MOTORCRAFT RTS1073.

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

This group shows a single part: MOTORCRAFT INTCO33.

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

4 Radiator parts for the 2026 Ford Explorer come from 3 brands — SPECTRA PREMIUM, CSF and MOTORCRAFT. 3 parts fit every engine; the other 1 is engine-specific.

This group includes CSF 3940, MOTORCRAFT RAD286 and SPECTRA PREMIUM CU13853 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

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

3 Radiator Fan Assembly parts are listed for the 2026 Ford Explorer, from MOTORCRAFT and TYC. 1 part fits every engine; the other 2 are engine-specific.

Part numbers include MOTORCRAFT RF862, MOTORCRAFT RF869 and TYC 624880.

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 6 Radiator Hose parts for the 2026 Ford Explorer.

Part numbers include MOTORCRAFT KM7819, MOTORCRAFT KM7882 and MOTORCRAFT KM7160, among others listed 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

3 Temperature Sender / Sensor parts for the 2026 Ford Explorer come from MOTORCRAFT.

Listed part numbers: MOTORCRAFT DY1704, MOTORCRAFT DY1807 and MOTORCRAFT DY1613.

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

4 Thermostat parts are listed for the 2026 Ford Explorer, from MOTORAD and MOTORCRAFT.

Part numbers include MOTORAD 1270198, MOTORAD 655180 and MOTORCRAFT RT1262, among others listed above.

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 2026 Ford Explorer come from 2 brands — MOTORCRAFT and MOTORAD.

This group includes MOTORAD MG1006, MOTORCRAFT RG571 and MOTORCRAFT RG640 and the remaining parts above.

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

4 Thermostat Housing / Water Outlet parts are listed for the 2026 Ford Explorer, from MOTORCRAFT and MOTORAD.

Listed part numbers: MOTORAD CH1052, MOTORCRAFT RH270 and MOTORCRAFT RH277, plus the other parts above.

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

MOTORCRAFT supplies both parts for the 2026 Ford Explorer.

Part numbers include MOTORCRAFT PW689 and MOTORCRAFT PW679.