2020 Ram 4000 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 2020 Ram 4000 come from 4 brands — PRESTONE, PEAK, VALVOLINE and 1 other brand. The "Popular" part is PRESTONE AF2100. Every part fits both the 5.7L V8 and the 6.4L V8.

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 PEAK and PRESTONE — the catalog's value-priced group. PEAK BQA1GAL is listed in this group.

In the Heavy Duty grade, PRESTONE and VALVOLINE supply 2 parts: rated for severe service. A representative part number is PRESTONE AFC12100.

In the Premium grade, PRESTONE and PEAK supply 4 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.

In the Standard Replacement grade, VALVOLINE, AISIN and PEAK supply 5 parts: built to original-equipment specification. A representative part number is VALVOLINE 888374.

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

2 Coolant Reservoir parts are listed for the 2020 Ram 4000, from DORMAN and GPD.

Part numbers include DORMAN 603840 and GPD 2411293.

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

This group shows a single part: SPECTRA PREMIUM CU13494.

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

One part is listed for the 2020 Ram 4000 — DORMAN 620057.

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

5 Radiator Fan Clutch parts for the 2020 Ram 4000 come from 3 brands — FOUR SEASONS, HAYDEN and FVP.

Listed part numbers: FOUR SEASONS 46088, FOUR SEASONS 46111 and FVP 9202440, plus the other parts above.

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

This group shows a single part: DORMAN 620989.

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

2 Temperature Sender / Sensor parts for the 2020 Ram 4000 come from 2 brands — DORMAN and GPD. 1 part fits every engine; the other 1 is engine-specific.

This group includes DORMAN 926427 and GPD 1712493.

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

17 Thermostat parts are listed for the 2020 Ram 4000, from MOTORAD, CALORSTAT and DORMAN. MOTORAD 7416203 carries the "Popular" badge. 3 parts fit every engine; the other 14 are engine-specific.

Economy: 1 part, from DORMAN. A representative part number is DORMAN 9023045.

The Heavy Duty section: 3 options from MOTORAD. MOTORAD 5416203 is listed in this group.

In the Performance grade, MOTORAD supplies 3 parts: engineered beyond original-equipment specification. A representative part number is MOTORAD 2416160.

The Premium section: 2 options from MOTORAD. MOTORAD 7416203 is listed in this group.

The Standard Replacement section: 8 options from MOTORAD and CALORSTAT. MOTORAD 416203 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

2 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2020 Ram 4000 come from 2 brands — FEL-PRO and MAHLE / CLEVITE.

Listed part numbers: FEL-PRO 35857 and MAHLE / CLEVITE C31788.

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

6 Thermostat Housing / Water Outlet parts are listed for the 2020 Ram 4000, from MOTORAD, DORMAN and SKP. MOTORAD CH7689 carries the "Popular" badge.

Economy: 3 parts, from DORMAN and SKP. A representative part number is DORMAN 902689.

The Standard Replacement section: 2 options from MOTORAD. MOTORAD CH7689 is listed in this group.

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

This group includes MOTORAD CH7689, DORMAN 902689 and DORMAN 902315 and the remaining 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

2 Water Pump parts are listed for the 2020 Ram 4000, from FVP and US MOTOR WORKS.

Part numbers include FVP US8169, among others listed 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

4 Water Pump Gasket parts for the 2020 Ram 4000 come from 4 brands — AJUSA, ELRING, FEL-PRO and 1 other brand.

This group includes AJUSA 01704700, ELRING B16430 and FEL-PRO 36071 and the remaining parts above.