2026 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

VALVOLINE supplies the 6 Coolant / Antifreeze parts for the 2026 Ram Promaster 3500. VALVOLINE ZXG051 carries the "Popular" badge.

In the Economy grade, VALVOLINE supplies 1 part: the catalog's value-priced group. A representative part number is VALVOLINE 719009.

The Heavy Duty section lists 2 options from VALVOLINE — rated for severe service. VALVOLINE ZXG051 is listed in this group.

The Standard Replacement section lists 3 options from VALVOLINE — built to original-equipment specification. VALVOLINE ZXEL1 is listed in this group.

Part numbers include VALVOLINE ZXG051, VALVOLINE 719009 and VALVOLINE 846439, among others listed 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 2026 Ram Promaster 3500. MOPAR 57008688AD carries the "Popular" badge.

Part numbers include MOPAR 57008688AD, MOPAR 57009275AA and MOPAR 57008846AC, among others listed above.

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

This group shows a single part: MOPAR 57008689AB.

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

This group shows a single part: GATES 31329.

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

One part is listed for the 2026 Ram Promaster 3500 — GATES 31371.

This table covers the Hose clamps. Read more

MOPAR supplies the 4 Hose Clamp parts for the 2026 Ram Promaster 3500.

This group includes MOPAR 6511009AA, MOPAR 6511760AA and MOPAR 6512672AA and the remaining parts 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

One part is listed for the 2026 Ram Promaster 3500 — MOPAR 57009191AA.

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

5 Radiator Fan Assembly parts for the 2026 Ram Promaster 3500 come from 3 brands — TYC, MOPAR and SKP. The "Popular" part is TYC 623730.

The Economy section: 1 option from SKP. SKP SK621637 is listed in this group.

Standard Replacement: 4 parts, from TYC and MOPAR. A representative part number is TYC 623730.

Part numbers include TYC 623730, SKP SK621637 and MOPAR 68188994AD, among others listed above.

This table covers the Radiator Fan resistors. Read more

One part is listed for the 2026 Ram Promaster 3500 — GATES FCM180.

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

4 Radiator Hose parts for the 2026 Ram Promaster 3500 come from MOPAR.

Listed part numbers: MOPAR 57008692AD, MOPAR 57008693AA and MOPAR 57008901AB, 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

MOPAR supplies the 3 Temperature Sender / Sensor parts for the 2026 Ram Promaster 3500.

This group includes MOPAR 68270732AB, MOPAR 68217702AD and MOPAR 5033313AA.

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

This group shows a single part: MOPAR 68217305AG.

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 2026 Ram Promaster 3500 — MOPAR 4893786AA.

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

3 Thermostat Housing / Water Outlet parts for the 2026 Ram Promaster 3500 come from 3 brands — GATES, MOPAR and MOTORAD.

Part numbers include GATES CO35074, MOPAR 4893794AE and MOTORAD CH2073.

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

6 Water Pump parts for the 2026 Ram Promaster 3500 come from 6 brands — US MOTOR WORKS, SKP, MELLING and 3 other brands. The "Popular" part is US MOTOR WORKS US8151.

The Economy section: 2 options from US MOTOR WORKS and SKP. US MOTOR WORKS US8151 is listed in this group.

Standard Replacement: 4 parts, from MELLING, DAYCO, GMB and 1 other brand. A representative part number is MELLING MWP548.

Listed part numbers: US MOTOR WORKS US8151, SKP SK1204010 and MELLING MWP548, plus the other parts 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

One part is listed for the 2026 Ram Promaster 3500 — MOPAR 68214109AB.

This table covers the Water Pump Inlet tubes. Read more

2 Water Pump Inlet Tube parts for the 2026 Ram Promaster 3500 come from MOPAR.

Listed part numbers: MOPAR 57008854AB and MOPAR 57008860AA.