2021 Ram Promaster 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

19 Coolant / Antifreeze parts for the 2021 Ram Promaster 3500 come from 6 brands — PRESTONE, VALVOLINE, PEAK and 3 other brands. The "Popular" part is FVP MV5050GAL.

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 4 options from FVP, PEAK, PRESTONE and 1 other brand — the catalog's value-priced group. FVP MV5050GAL is listed in this group.

In the Heavy Duty grade, VALVOLINE and PRESTONE supply 3 parts: rated for severe service. A representative part number is VALVOLINE ZXG051.

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, VALVOLINE, AISIN, MOPAR and 1 other brand supply 6 parts: built to original-equipment specification. A representative part number is VALVOLINE ZXEL1.

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

5 Coolant Hose / Pipe parts for the 2021 Ram Promaster 3500 come from 3 brands — DORMAN, MOPAR and GATES. The "Popular" part is GATES 52003.

Listed part numbers: GATES 52003, DORMAN 626798 and DORMAN 9365501, plus the other parts above.

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

6 Coolant Reservoir parts are listed for the 2021 Ram Promaster 3500, from TECHPRO, AUTOTECNICA, DORMAN and 2 other brands. AUTOTECNICA DG0718878 carries the "Popular" badge.

This group includes AUTOTECNICA DG0718878, DORMAN 603832 and GPD 2411207 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

3 Coolant Reservoir Cap parts are listed for the 2021 Ram Promaster 3500, from DORMAN, GATES and MOTORAD.

Part numbers include DORMAN 54375, GATES 31329 and MOTORAD T75.

This table covers the Cooling Fan control modules. Read more

One part is listed for the 2021 Ram Promaster 3500 — STANDARD MOTOR PRODUCTS RY2049.

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

This group shows a single part: GATES 31371.

This table covers the Hose clamps. Read more

6 Hose Clamp parts for the 2021 Ram Promaster 3500 come from MOPAR. The "Popular" part is MOPAR 6107386AA.

Part numbers include MOPAR 6107386AA, MOPAR 6106358AA and MOPAR 6511009AA, among others listed 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

9 Radiator parts for the 2021 Ram Promaster 3500 come from 9 brands — ULTRA-POWER, CSF, DENSO and 6 other brands. The "Popular" part is CSF 4024.

The Economy section: 1 option from ULTRA-POWER. ULTRA-POWER 13448 is listed in this group.

Standard Replacement: 8 parts, from CSF, DENSO, AGILITY and 5 other brands. A representative part number is CSF 4024.

Listed part numbers: CSF 4024, ULTRA-POWER 13448 and DENSO 2219408, plus the other parts above.

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

16 Radiator Fan Assembly parts are listed for the 2021 Ram Promaster 3500, from DORMAN, SKP, GPD and 5 other brands. DORMAN 621637 carries the "Popular" badge.

Economy: 6 parts, from DORMAN, SKP and GPD. A representative part number is DORMAN 621637.

The Standard Replacement section: 10 options from AGILITY, TYC, FOUR SEASONS and 2 other brands. AGILITY 6010378 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

7 Radiator Hose parts are listed for the 2021 Ram Promaster 3500, from GATES, DORMAN, MOPAR and 1 other brand. GATES 51888 carries the "Popular" badge.

Listed part numbers: GATES 51888, GATES 24796 and CONTINENTAL 60815, plus the other parts 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

11 Temperature Sender / Sensor parts for the 2021 Ram Promaster 3500 come from 10 brands — MOPAR, DORMAN, GPD and 7 other brands. The "Popular" part is DORMAN 926427.

The Economy section: 4 options from DORMAN, GPD, UNITED MOTOR PRODUCTS and 1 other brand. DORMAN 926427 is listed in this group.

Standard Replacement: 7 parts, from MOPAR, BECK/ARNLEY, DELPHI and 3 other brands. A representative part number is BECK/ARNLEY 1581735.

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

8 Thermostat parts are listed for the 2021 Ram Promaster 3500, from DORMAN, SKP, AISIN and 4 other brands. DORMAN 9023036 carries the "Popular" badge.

Economy: 3 parts, from DORMAN and SKP. A representative part number is DORMAN 9023036.

The Standard Replacement section: 5 options from AISIN, FOUR SEASONS, GATES and 2 other brands. AISIN THRCH0015 is listed in this group.

Part numbers include DORMAN 9023036, DORMAN 9023036XD and SKP SK121227, 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

7 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2021 Ram Promaster 3500 come from 4 brands — FEL-PRO, MAHLE / CLEVITE, APEX and 1 other brand. The "Popular" part is FEL-PRO 35974.

Listed part numbers: FEL-PRO 35974, MAHLE / CLEVITE C32590 and APEX AWO2330, plus the other parts above.

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

8 Thermostat Housing / Water Outlet parts are listed for the 2021 Ram Promaster 3500, from DORMAN, SKP, AUTOTECNICA and 4 other brands. DORMAN 9023102HP carries the "Popular" badge.

Economy: 3 parts, from DORMAN and SKP. A representative part number is DORMAN 9023102HP.

The Standard Replacement section: 5 options from AUTOTECNICA, FOUR SEASONS, GATES and 2 other brands. AUTOTECNICA CY0719439 is listed in this group.

Part numbers include DORMAN 9023102HP, DORMAN 9023102 and SKP SKCO34803, among others listed 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

12 Water Pump parts are listed for the 2021 Ram Promaster 3500, from MOPAR, SKP, FVP and 8 other brands. SKP SK1204450 carries the "Popular" badge.

Economy: 4 parts, from SKP, FVP, US MOTOR WORKS and 1 other brand. A representative part number is SKP SK1204450.

The Standard Replacement section: 8 options from MOPAR, ACDELCO, GATES and 4 other brands. ACDELCO 252983 is listed in this group.

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

5 Water Pump Gasket parts for the 2021 Ram Promaster 3500 come from 5 brands — ULTRA-POWER, APEX, FEL-PRO and 2 other brands. The "Popular" part is ULTRA-POWER 35982.

Part numbers include ULTRA-POWER 35982 and APEX AWP3283, among others listed above.