2025 Ram 3500 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

7 Coolant / Antifreeze parts are listed for the 2025 Ram 3500, from PRESTONE and MOPAR. PRESTONE AF3100 carries the "Popular" badge. All of them fit every engine offered in the 2025 3500.

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, PRESTONE supplies 1 part: the catalog's value-priced group. A representative part number is PRESTONE AF3100.

The Heavy Duty section lists 1 option from PRESTONE — rated for severe service. PRESTONE AFC12100 is listed in this group.

The Premium section lists 3 options from PRESTONE — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.

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

Listed part numbers: PRESTONE AF3100, PRESTONE AF3055 and PRESTONE AFC12100, plus the other parts above.

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

MOPAR supplies the 7 Coolant Hose / Pipe parts for the 2025 Ram 3500. MOPAR 68359813AA carries the "Popular" badge.

Listed part numbers: MOPAR 68359813AA, MOPAR 68359826AD and MOPAR 57009948AA, plus the other 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 2025 Ram 3500 come from ELRING.

Listed part numbers: ELRING 106320 and ELRING B63030.

This table covers the seals at the Coolant Hose Connector / Flange. 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: ELRING 109260.

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

2 Coolant Reservoir parts for the 2025 Ram 3500 come from MOPAR.

This group includes MOPAR 68184910AE and MOPAR 68370066AC.

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 2025 Ram 3500 come from 2 brands — CALORSTAT and MOTORAD. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.

This group includes CALORSTAT RC0144 and MOTORAD T73.

This table covers the Hose clamps. Read more

MOPAR supplies the 4 Hose Clamp parts for the 2025 Ram 3500.

Listed part numbers: MOPAR 6506848AA, MOPAR 6512744AA and MOPAR 68211466AA, plus the other parts above.

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

3 Intercooler parts are listed for the 2025 Ram 3500, from GPD, MOPAR and TYC.

Listed part numbers: GPD 2711410, MOPAR 68534238AB and TYC 18132.

This table covers the Intercooler Air Hose pipes. Read more

MOPAR supplies both parts for the 2025 Ram 3500.

Listed part numbers: MOPAR 68591744AA and MOPAR 68591745AA.

This table covers the seals at the Intercooler. 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: MOPAR 68322667AD.

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 are listed for the 2025 Ram 3500, from CSF, MOPAR and TYC.

Part numbers include CSF 3936, CSF 3937 and MOPAR 68322492AA, among others listed above.

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

This group shows a single part: UAC FA50972C.

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

3 Radiator Fan Blade parts for the 2025 Ram 3500 come from 2 brands — MOPAR and SKP.

Part numbers include MOPAR 55056947AA, MOPAR 68359841AB and SKP SK959911.

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

11 Radiator Fan Clutch parts are listed for the 2025 Ram 3500, from HAYDEN, US MOTOR WORKS, FOUR SEASONS and 4 other brands. HAYDEN 2962 carries the "Popular" badge.

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

MOPAR supplies the 4 Radiator Fan Shroud parts for the 2025 Ram 3500.

Listed part numbers: MOPAR 68194960AC, MOPAR 68359839AB and MOPAR 68359840AA, plus the other 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

5 Radiator Hose parts for the 2025 Ram 3500 come from 2 brands — GATES and MOPAR.

Part numbers include GATES 52106, GATES 52108 and GATES 52107, among others listed 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

2 Radiator Mount Bushing parts for the 2025 Ram 3500 come from MOPAR.

Listed part numbers: MOPAR 68050200AA and MOPAR 68451118AA.

This table covers the seals at the Radiator. 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

10 Radiator Seal parts for the 2025 Ram 3500 come from MOPAR. The "Popular" part is MOPAR 68362572AB. 1 part fits every engine; the other 9 are engine-specific.

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 are listed for the 2025 Ram 3500, from STANDARD MOTOR PRODUCTS, WELLS, GPD and 2 other brands. STANDARD MOTOR PRODUCTS TX195 carries the "Popular" badge.

Economy: 4 parts, from STANDARD MOTOR PRODUCTS, GPD and HOLSTEIN. A representative part number is GPD 1712493.

The Standard Replacement section lists 5 options from STANDARD MOTOR PRODUCTS, WELLS and MOPAR — built to original-equipment specification. STANDARD MOTOR PRODUCTS TX195 is listed in this group.

This group includes STANDARD MOTOR PRODUCTS TX195, GPD 1712493 and HOLSTEIN 2CTS0247 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

10 Thermostat parts for the 2025 Ram 3500 come from 7 brands — MOTORAD, DORMAN, SKP and 4 other brands. The "Popular" part is MOTORAD 5426190.

The Economy section: 2 options from DORMAN and SKP. DORMAN 9023045 is listed in this group.

Heavy Duty: 1 part, from MOTORAD. A representative part number is MOTORAD 5426190.

Premium: 1 part, from MOTORAD. A representative part number is MOTORAD 7426190.

Standard Replacement: 6 parts, from MOTORAD, CALORSTAT, FOUR SEASONS and 2 other brands. A representative part number is MOTORAD 426190.

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

One part is listed for the 2025 Ram 3500 — ELRING 096800.

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

This group shows a single part: MOPAR 4893177AD.

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

13 Water Pump parts for the 2025 Ram 3500 come from 7 brands — FVP, US MOTOR WORKS, GATES and 4 other brands. The "Popular" part is SKP SK1204540.

The Economy section: 5 options from US MOTOR WORKS, FVP and SKP. SKP SK1204540 is listed in this group.

Standard Replacement: 8 parts, from GATES, GMB, MOPAR and 2 other brands. A representative part number is GATES 42271.

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

2 Water Pump Gasket parts are listed for the 2025 Ram 3500, from ELRING and MOPAR.

Listed part numbers: ELRING B16430 and MOPAR 4893149AA.

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

This group shows a single part: ELRING 073720.