2021 Ford F-750 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 are listed for the 2021 Ford F-750, from PRESTONE, PEAK, VALVOLINE and 2 other brands. PRESTONE AF2100 carries the "Popular" badge. All of them fit every engine offered in the 2021 F-750.

The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.

In the Economy grade, PEAK and PRESTONE supply 2 parts: the catalog's value-priced group. A representative part number is PEAK BQA1GAL.

The Heavy Duty section lists 7 options from PEAK, PRESTONE and VALVOLINE — rated for severe service. PEAK FCA1GAL is listed in this group.

The Premium section lists 4 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.

The Standard Replacement section lists 5 options from MOTORCRAFT, VALVOLINE and AISIN — built to original-equipment specification. MOTORCRAFT VC13G is listed in this group.

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

7 Coolant Hose / Pipe parts are listed for the 2021 Ford F-750, from MOTORCRAFT and DORMAN. DORMAN 626830 carries the "Popular" badge. 1 part fits every engine; the other 6 are engine-specific.

This group includes DORMAN 626830, MOTORCRAFT KM8086 and MOTORCRAFT KM5365 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

2 Coolant Hose / Pipe Seal parts for the 2021 Ford F-750 come from MAHLE / CLEVITE.

Listed part numbers: MAHLE / CLEVITE C33846 and MAHLE / CLEVITE GS34033.

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

3 Coolant Reservoir parts for the 2021 Ford F-750 come from 3 brands — DORMAN, GPD and ULTRA-POWER.

Listed part numbers: DORMAN 603277 and GPD 2411329, plus the other 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

2 Coolant Reservoir Cap parts for the 2021 Ford F-750 come from 2 brands — GATES and MOTORCRAFT.

Part numbers include GATES 31406 and MOTORCRAFT RS527.

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

One part is listed for the 2021 Ford F-750 — MOTORCRAFT RTS1084.

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

One part is listed for the 2021 Ford F-750 — MOTORCRAFT INTCO12.

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

MOTORCRAFT supplies the 3 Radiator parts for the 2021 Ford F-750.

Part numbers include MOTORCRAFT RAD230, MOTORCRAFT RAD123 and MOTORCRAFT RAD122.

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

MOTORCRAFT supplies the 4 Radiator Cap parts for the 2021 Ford F-750.

Listed part numbers: MOTORCRAFT RS534, MOTORCRAFT RS533 and MOTORCRAFT RH199, plus the other parts 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

4 Radiator Fan Blade parts for the 2021 Ford F-750 come from 3 brands — MOTORCRAFT, DORMAN and GPD.

Listed part numbers: DORMAN 621591, GPD 2812321 and MOTORCRAFT YA265, plus the other parts above.

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

7 Radiator Fan Clutch parts are listed for the 2021 Ford F-750, from FOUR SEASONS, HAYDEN, MOTORCRAFT and 1 other brand.

This group includes FOUR SEASONS 46147, FOUR SEASONS 46153 and HAYDEN 3241 and the remaining 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

7 Radiator Hose parts for the 2021 Ford F-750 come from MOTORCRAFT.

This group includes MOTORCRAFT KM5385, MOTORCRAFT KM5393 and MOTORCRAFT KM5362 and the remaining parts above.

This table covers the Radiator Mount bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles. Read more

This group shows a single part: DORMAN 927244.

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

One part is listed for the 2021 Ford F-750 — GPD 1814536.

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

9 Thermostat parts for the 2021 Ford F-750 come from 3 brands — MOTORAD, MOTORCRAFT and GATES. The "Popular" part is MOTORCRAFT RT1206.

The Performance section lists 1 option from MOTORAD — engineered beyond original-equipment specification. MOTORAD MRD107 is listed in this group.

Standard Replacement: 7 parts, from MOTORCRAFT, MOTORAD and GATES. A representative part number is MOTORCRAFT RT1206.

1 further part sits outside the graded sections, with the same engine-level match.

Part numbers include MOTORCRAFT RT1206, MOTORAD MRD107 and MOTORCRAFT RT1249, 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

5 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2021 Ford F-750, from MAHLE / CLEVITE, MOTORCRAFT and GATES.

This group includes GATES 33671, MAHLE / CLEVITE C32601 and MAHLE / CLEVITE C31302 and the remaining parts above.

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

This group shows a single part: MOTORCRAFT RH286.

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

One part is listed for the 2021 Ford F-750 — MAHLE / CLEVITE C33825.