The 2026 Ram Promaster 2500 has 48 cooling system parts with verified fitment on this page — 17 part types and 10 brands, covering the 3.6L V6 engine. Each part includes a manufacturer part number and application notes.
The cooling system system on the 2026 Ram Promaster 2500 keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses. The largest groups are Coolant Hose / Pipe (7 parts), Coolant / Antifreeze (6 parts) and Water Pump (6 parts). The other 14 part types cover the remaining 29 parts.
Every part on this page is matched to the 3.6L V6 — the only engine offered in the 2026 Ram Promaster 2500.
The most listed brands for 2026 Ram Promaster 2500 cooling system parts are MOPAR (29 parts), VALVOLINE (6 parts) and GATES (4 parts), plus 7 more brands. Quality grades include Standard Replacement, Economy and Heavy Duty.
7 parts on this 2026 Ram Promaster 2500 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including VALVOLINE ZXG051 (Coolant / Antifreeze) and MOPAR 57008688AD (Coolant Hose / Pipe). Click any part number to see every vehicle that part fits.
Coolant / Antifreeze
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE | 719009 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular | ZXG051 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | G05 Yellow1 Gallon | View on Amazon |
| VALVOLINE | 846439 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HD Nitrite Free Extended Life Yellow1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular | ZXEL1 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Dex-Cool Orange1 Gallon | View on Amazon |
| VALVOLINE | 888374 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | American Vehicle Orange1 Gallon | View on Amazon |
| VALVOLINE | 877981 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | G30 Purple1 Gallon | View on Amazon |
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.
6 Coolant / Antifreeze parts for the 2026 Ram Promaster 2500 come from VALVOLINE. The "Popular" part is VALVOLINE ZXG051.
The Economy section lists 1 option from VALVOLINE — the catalog's value-priced group. VALVOLINE 719009 is listed in this group.
In the Heavy Duty grade, VALVOLINE supplies 2 parts: rated for severe service. A representative part number is VALVOLINE ZXG051.
In the Standard Replacement grade, VALVOLINE supplies 3 parts: built to original-equipment specification. A representative part number is VALVOLINE ZXEL1.
This group includes VALVOLINE ZXG051, VALVOLINE 719009 and VALVOLINE 846439 and the remaining parts above.
Coolant Hose / Pipe
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Popular | 57008688AD | 🇺🇸 US 🇨🇦 CA | Fits 24V VVT Engine.113 WB | View on Amazon |
| MOPAR Popular | 57009275AA | 🇺🇸 US 🇨🇦 CA | Fits 24V VVT Engine.113 WB | View on Amazon |
| MOPAR | 57008846AC | 🇺🇸 US 🇨🇦 CA | Fits Van Wheelbase 9or DELIVERY VAN | View on Amazon |
| MOPAR | 57008847AB | 🇺🇸 US 🇨🇦 CA | Fits Van Wheelbase 9or DELIVERY VAN | View on Amazon |
| MOPAR | 57008852AA | 🇺🇸 US 🇨🇦 CA | Fits OutletDelivery Van | View on Amazon |
| MOPAR | 57008853AA | 🇺🇸 US 🇨🇦 CA | Fits OutletDelivery Van | View on Amazon |
| MOPAR | 57008857AA | 🇺🇸 US 🇨🇦 CA | Fits Van Wheelbase 9or DELIVERY VAN | View on Amazon |
This table covers the hard pipes and extra hoses in the coolant circuit.
7 Coolant Hose / Pipe parts for the 2026 Ram Promaster 2500 come from MOPAR. The "Popular" part is MOPAR 57008688AD.
This group includes MOPAR 57008688AD, MOPAR 57009275AA and MOPAR 57008846AC and the remaining parts above.
Coolant Reservoir
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 57008689AB | 🇺🇸 US 🇨🇦 CA | Fits 24V VVT Engine.119 WB | View on Amazon |
This table covers the overflow / expansion tanks that hold extra coolant.
One part is listed for the 2026 Ram Promaster 2500 — MOPAR 57008689AB.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES | 31329 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | OE Type | View on Amazon |
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.
One part is listed for the 2026 Ram Promaster 2500 — GATES 31329.
Cooling System Tester Adapter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES | 31371 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Cooling System Pressure | View on Amazon |
This table covers the adapters used to pressure-test this cooling system.
This group shows a single part: GATES 31371.
Hose Clamp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 6511009AA | 🇺🇸 US 🇨🇦 CA | 93mm | View on Amazon |
| MOPAR | 6511760AA | 🇺🇸 US 🇨🇦 CA | Fits 24V VVT Engine.119 WB | View on Amazon |
| MOPAR | 6512672AA | 🇺🇸 US 🇨🇦 CA | Fits 24V VVT Engine.119 WB | View on Amazon |
| MOPAR | 68101439AA | 🇺🇸 US 🇨🇦 CA | Fits 24V VVT Engine.Rear Auxiliary Heater Preparation | View on Amazon |
This table covers the Hose clamps.
4 Hose Clamp parts for the 2026 Ram Promaster 2500 come from MOPAR.
Listed part numbers: MOPAR 6511009AA, MOPAR 6511760AA and MOPAR 6512672AA, plus the other parts above.
Radiator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 57009191AA | 🇺🇸 US 🇨🇦 CA | Fits Van Wheelbase 9or DELIVERY VAN | View on Amazon |
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.
This group shows a single part: MOPAR 57009191AA.
Radiator Fan Assembly
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP | SK621637 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Air Conditioning | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TYC Popular | 623730 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Air Conditioning | View on Amazon |
| MOPAR | 68188994AD | 🇺🇸 US 🇨🇦 CA | Fits 24V VVT Engine.Exc. A/C | View on Amazon |
| MOPAR | 68189000AD | 🇺🇸 US 🇨🇦 CA | Fits 24V VVT Engine.A/C | View on Amazon |
| TYC | 623720 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without A/C | View on Amazon |
This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator.
5 Radiator Fan Assembly parts are listed for the 2026 Ram Promaster 2500, from TYC, MOPAR and SKP. TYC 623730 carries the "Popular" badge.
Economy: 1 part, from SKP. A representative part number is SKP SK621637.
The Standard Replacement section: 4 options from TYC and MOPAR. TYC 623730 is listed in this group.
Listed part numbers: TYC 623730, SKP SK621637 and MOPAR 68188994AD, plus the other parts above.
Radiator Fan Resistor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES | FCM180 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Radiator Fan resistors.
This group shows a single part: GATES FCM180.
Radiator Hose
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 57008692AD | 🇺🇸 US 🇨🇦 CA | Fits 24V VVT Engine.Inlet | View on Amazon |
| MOPAR | 57008693AA | 🇺🇸 US 🇨🇦 CA | Fits 24V VVT Engine.Outlet | View on Amazon |
| MOPAR | 57008901AB | 🇺🇸 US 🇨🇦 CA | Fits 400V G1200 Front Electric Drive MotorInlet | View on Amazon |
| MOPAR | 57008902AB | 🇺🇸 US 🇨🇦 CA | Fits OutletVan Wheelbase 8or Outlet | View on Amazon |
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.
MOPAR supplies the 4 Radiator Hose parts for the 2026 Ram Promaster 2500.
Listed part numbers: MOPAR 57008692AD, MOPAR 57008693AA and MOPAR 57008901AB, plus the other parts above.
Temperature Sender / Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 68270732AB | 🇺🇸 US 🇨🇦 CA | Fluid Temperature Sensor | View on Amazon |
| MOPAR | 68217702AD | 🇺🇸 US 🇨🇦 CA | Fluid Temperature Sensor | View on Amazon |
| MOPAR | 5033313AA | 🇺🇸 US 🇨🇦 CA | Fits Van Wheelbase 9or DELIVERY VAN | View on Amazon |
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.
3 Temperature Sender / Sensor parts for the 2026 Ram Promaster 2500 come from MOPAR.
This group includes MOPAR 68270732AB, MOPAR 68217702AD and MOPAR 5033313AA.
Thermostat
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 68217305AG | 🇺🇸 US 🇨🇦 CA | Includes Housing | View on Amazon |
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.
One part is listed for the 2026 Ram Promaster 2500 — MOPAR 68217305AG.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 4893786AA | 🇺🇸 US 🇨🇦 CA | Crossover Water Outlet Gasket | View on Amazon |
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.
This group shows a single part: MOPAR 4893786AA.
Thermostat Housing / Water Outlet
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES | CO35074 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Coolant CrossoverWater Outlet | View on Amazon |
| MOPAR | 4893794AE | 🇺🇸 US 🇨🇦 CA | Fits 24V VVT Engine.2 door Convertible | View on Amazon |
| MOTORAD | CH2073 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits LowerThermostat Housing | View on Amazon |
This table covers the housings and outlets the thermostat sits in.
3 Thermostat Housing / Water Outlet parts are listed for the 2026 Ram Promaster 2500, from GATES, MOPAR and MOTORAD.
Listed part numbers: GATES CO35074, MOPAR 4893794AE and MOTORAD CH2073.
Water Pump
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| US MOTOR WORKS Popular | US8151 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP | SK1204010 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING Popular | MWP548 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| DAYCO | DP2261 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| GMB | 1204010 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| MOPAR | 68311109AD | 🇺🇸 US 🇨🇦 CA | Fits 24V VVT Engine.119 WB | View on Amazon |
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.
6 Water Pump parts are listed for the 2026 Ram Promaster 2500, from US MOTOR WORKS, SKP, MELLING and 3 other brands. US MOTOR WORKS US8151 carries the "Popular" badge.
Economy: 2 parts, from US MOTOR WORKS and SKP. A representative part number is US MOTOR WORKS US8151.
The Standard Replacement section: 4 options from MELLING, DAYCO, GMB and 1 other brand. MELLING MWP548 is listed in this group.
Part numbers include US MOTOR WORKS US8151, SKP SK1204010 and MELLING MWP548, among others listed above.
Water Pump Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 68214109AB | 🇺🇸 US 🇨🇦 CA | Fits 24V VVT Engine.119 WB | View on Amazon |
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.
This group shows a single part: MOPAR 68214109AB.
Water Pump Inlet Tube
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 57008854AB | 🇺🇸 US 🇨🇦 CA | Fits Van Wheelbase 9or DELIVERY VAN | View on Amazon |
| MOPAR | 57008860AA | 🇺🇸 US 🇨🇦 CA | Fits Van Wheelbase 9or DELIVERY VAN | View on Amazon |
This table covers the Water Pump Inlet tubes.
MOPAR supplies both parts for the 2026 Ram Promaster 2500.
This group includes MOPAR 57008854AB and MOPAR 57008860AA.
Buying Cooling System Parts for a 2026 Ram Promaster 2500
On this vehicle, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses.
- Confirm you have the 3.6L V6 engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Coolant Hose / Pipe and Coolant / Antifreeze .
Frequently Asked Questions
How many cooling system parts fit the 2026 Ram Promaster 2500?
Our catalog currently lists 48 cooling system parts for the 2026 Ram Promaster 2500 across 17 subcategories and 10 brands, covering the 3.6L V6 engine. Each part is matched to the engine(s) it fits.
What are the signs of cooling system problems on a 2026 Ram Promaster 2500?
Common symptoms include a rising temperature gauge in traffic, sweet-smelling steam, crusty deposits around hose clamps, or a heater that blows cold. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2026 Ram Promaster 2500 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2026 Ram Promaster 2500?
Every part on this page is matched to the 3.6L V6 engine. Then replace coolant with the exact specification the manufacturer calls for — mixing chemistries can gel and block small passages. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2026 Ram Promaster 2500
Cooling System Parts for Other Ram Promaster 2500 Years
Switch vehicle or jump to a subcategory
Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.