2026 Ram 1500 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

8 Coolant / Antifreeze parts for the 2026 Ram 1500 come from 2 brands — VALVOLINE and PRESTONE. The "Popular" part is VALVOLINE ZXG051. 4 parts fit every engine; the other 4 are engine-specific.

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 and PRESTONE supply 3 parts: rated for severe service. A representative part number is VALVOLINE ZXG051.

In the Standard Replacement grade, VALVOLINE supplies 4 parts: built to original-equipment specification. A representative part number is VALVOLINE ZXEL1.

Part numbers include VALVOLINE ZXG051, VALVOLINE 719009 and PRESTONE AFC12100, among others listed above.

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

10 Coolant Hose / Pipe parts for the 2026 Ram 1500 come from MOPAR.

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

MOPAR supplies the 3 Coolant Reservoir parts for the 2026 Ram 1500.

This group includes MOPAR 68309850AA, MOPAR 68335579AC and MOPAR 68309844AC.

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

This group shows a single part: GATES 31413.

This table covers the Hose clamps. Read more

6 Hose Clamp parts for the 2026 Ram 1500 come from MOPAR. The "Popular" part is MOPAR 55056415AA.

This group includes MOPAR 55056415AA, MOPAR 6514711AA and MOPAR 52029091AA and the remaining parts above.

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

3 Intercooler parts for the 2026 Ram 1500 come from MOPAR.

Part numbers include MOPAR 68359210AE, MOPAR 68464743AD and MOPAR 68464743AE.

This table covers the Intercooler Air Hose pipes. Read more

3 Intercooler Air Hose / Pipe parts for the 2026 Ram 1500 come from MOPAR.

Part numbers include MOPAR 68463517AE, MOPAR 68464759AC and MOPAR 68464764AD.

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 2026 Ram 1500 come from 5 brands — MOPAR, GPD, CSF and 2 other brands.

The Economy section: 1 option from GPD. GPD 13772C is listed in this group.

Standard Replacement: 1 part, from MOPAR. A representative part number is MOPAR 68341188AA.

7 further parts sit outside the graded sections, with the same engine-level match.

This group includes GPD 13772C, MOPAR 68341188AA and CSF 3887 and the remaining parts above.

This table covers the caps that hold system pressure at the radiator or reservoir neck. 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 Radiator Cap parts for the 2026 Ram 1500 come from 2 brands — GATES and MOPAR.

In the Locking Replacement grade, GATES supplies 1 part: grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. A representative part number is GATES 31518.

Standard Replacement: 2 parts, from GATES and MOPAR. A representative part number is GATES 31528.

Part numbers include GATES 31518, GATES 31528 and MOPAR 52014479AB.

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

MOPAR supplies both parts for the 2026 Ram 1500.

Listed part numbers: MOPAR 68545974AD and MOPAR 68275634AC.

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

9 Radiator Hose parts are listed for the 2026 Ram 1500, from MOPAR and DAYCO.

This group includes DAYCO 72595, MOPAR 68564568AA and MOPAR 68564572AB and the remaining parts 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

MOPAR supplies the 4 Radiator Mount Bushing parts for the 2026 Ram 1500.

This group includes MOPAR 68673393AA, MOPAR 68673414AA and MOPAR 68050200AA and the remaining parts above.

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

MOPAR supplies the 13 Radiator Seal parts for the 2026 Ram 1500. MOPAR 68565444AA carries the "Popular" badge.

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

6 Temperature Sender / Sensor parts for the 2026 Ram 1500 come from 3 brands — MOPAR, GPD and STANDARD MOTOR PRODUCTS.

The Economy section: 1 option from GPD. GPD 1712493 is listed in this group.

Standard Replacement: 1 part, from MOPAR. A representative part number is MOPAR 5149077AB.

4 further parts sit outside the graded sections, with the same engine-level match.

This group includes GPD 1712493, MOPAR 5149077AB and MOPAR 68224451AA 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

5 Thermostat parts are listed for the 2026 Ram 1500, from MOPAR, GATES and MOTORAD.

This group includes GATES 34053, MOPAR 68361650AH and MOPAR 4893926AH and the remaining parts 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

3 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2026 Ram 1500 come from MOPAR.

Listed part numbers: MOPAR 68361649AB, MOPAR 68361712AB and MOPAR 4893786AA.

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

MOPAR supplies both parts for the 2026 Ram 1500.

Part numbers include MOPAR 4893943AC and MOPAR 53022168AD.

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 are listed for the 2026 Ram 1500, from MOPAR, FVP, US MOTOR WORKS and 1 other brand. MOPAR 4893942AC carries the "Popular" badge.

Economy: 1 part, from FVP. A representative part number is FVP US8230.

The Standard Replacement section: 4 options from MOPAR. MOPAR 4893942AC is listed in this group.

8 ungrouped parts are not assigned to a grade, with the same engine-level match.

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 for the 2026 Ram 1500 come from MOPAR.

This group includes MOPAR 68214109AB and MOPAR 68391488AB.

This table covers the Water Pump Inlet tubes. Read more

MOPAR supplies both parts for the 2026 Ram 1500.

Listed part numbers: MOPAR 68358347AE and MOPAR 68552798AA.