2018 Ram 2500 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

21 Coolant / Antifreeze parts for the 2018 Ram 2500 come from 6 brands — PRESTONE, VALVOLINE, PEAK and 3 other brands. The "Popular" part is FVP MV5050GAL. Every part fits all 3 engine options (5.7L V8, 6.4L V8 and 6.7L L6 DIESEL Turbocharged).

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, PRESTONE, ACDELCO and 2 other brands supply 8 parts: built to original-equipment specification. A representative part number is ACDELCO 105027.

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

7 Coolant Hose / Pipe parts for the 2018 Ram 2500 come from 3 brands — MOPAR, DORMAN and ULTRA-POWER.

This group includes DORMAN 626603, DORMAN 626823 and MOPAR 68184913AE and the remaining 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 are listed for the 2018 Ram 2500, from AUTOTECNICA and ELRING.

Part numbers include AUTOTECNICA RM0720252 and ELRING 106320.

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

One part is listed for the 2018 Ram 2500 — ELRING 109260.

This table covers the Coolant Level sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors. Read more

4 Coolant Level Sensor parts for the 2018 Ram 2500 come from 4 brands — AUTOTECNICA, MOPAR, STANDARD MOTOR PRODUCTS and 1 other brand. 1 part fits every engine; the other 3 are engine-specific.

This group includes AUTOTECNICA DG0716969, MOPAR 68354536AA and STANDARD MOTOR PRODUCTS FLS318 and the remaining parts above.

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

15 Coolant Reservoir parts are listed for the 2018 Ram 2500, from DORMAN, MOPAR, GPD and 4 other brands. DORMAN 603571 carries the "Popular" badge.

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

5 Coolant Reservoir Cap parts are listed for the 2018 Ram 2500, from MOTORAD, AUTOTECNICA, CALORSTAT and 1 other brand.

Part numbers include AUTOTECNICA GM0714619, CALORSTAT RC0144 and GATES 31569, among others listed above.

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

4 Cooling System Tester Adapter parts for the 2018 Ram 2500 come from 2 brands — MOTORAD and GATES.

This group includes GATES 31413, MOTORAD 3003 and MOTORAD 3128 and the remaining parts above.

This table covers the Hose clamps. Read more

7 Hose Clamp parts for the 2018 Ram 2500 come from MOPAR.

Part numbers include MOPAR 52006750, MOPAR 32002370 and MOPAR 4809147AA, among others listed above.

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

7 Intercooler parts for the 2018 Ram 2500 come from 6 brands — CSF, TYC, DORMAN and 3 other brands. The "Popular" part is CSF 6098.

Listed part numbers: CSF 6098, TYC 18030 and CSF 6076, plus the other parts above.

This table covers the Intercooler Air Hose pipes. Read more

7 Intercooler Air Hose / Pipe parts for the 2018 Ram 2500 come from 4 brands — DORMAN, GATES, MOPAR and 1 other brand. The "Popular" part is BRUTE POWER HKT9003.

Part numbers include BRUTE POWER HKT9003, DORMAN 667311 and DORMAN 667435, among others listed above.

This table covers the Intercooler Hose / Pipe clamps. Read more

DORMAN supplies both parts for the 2018 Ram 2500.

This group includes DORMAN 55247 and DORMAN 55246.

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

One part is listed for the 2018 Ram 2500 — MOPAR 68189159AA.

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

29 Radiator parts for the 2018 Ram 2500 come from 13 brands — CSF, TYC, FVP and 10 other brands. The "Popular" part is CSF 3739. Economy and Standard Replacement are all represented, and Standard Replacement alone accounts for 17 parts.

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

7 Radiator Cap parts for the 2018 Ram 2500 come from 5 brands — GATES, MOTORAD, CALORSTAT and 2 other brands. The "Popular" part is GATES 31528.

In the Locking Replacement grade, GATES and MOTORAD supply 2 parts: 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: 5 parts, from GATES, MOTORAD, CALORSTAT and 2 other brands. A representative part number is GATES 31528.

Part numbers include GATES 31528, GATES 31518 and MOTORAD ST16, among others listed above.

This table covers the petcocks used to drain the radiator. Read more

One part is listed for the 2018 Ram 2500 — DORMAN 61134.

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

8 Radiator Fan Assembly parts are listed for the 2018 Ram 2500, from VARIOUS MFR, GPD, TYC and 4 other brands. TYC 622360 carries the "Popular" badge.

Economy: 2 parts, from GPD and VARIOUS MFR. A representative part number is GPD 2811742.

The Standard Replacement section: 4 options from TYC, VDO / CONTINENTAL, MOPAR and 1 other brand. TYC 622360 is listed in this group.

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

Listed part numbers: TYC 622360, GPD 2811742 and VARIOUS MFR CH3115166, plus the other parts above.

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

5 Radiator Fan Blade parts are listed for the 2018 Ram 2500, from DORMAN, MOPAR and SKP.

Part numbers include DORMAN 620057, DORMAN 621592 and MOPAR 55056947AA, among others listed above.

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

19 Radiator Fan Clutch parts for the 2018 Ram 2500 come from 8 brands — HAYDEN, US MOTOR WORKS, FOUR SEASONS and 5 other brands. The "Popular" part is HAYDEN 2962.

This table covers the brackets that mount the Radiator Fan Clutch Bearing. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

2 Radiator Fan Clutch Bearing Bracket parts for the 2018 Ram 2500 come from 2 brands — DORMAN and GATES.

Listed part numbers: DORMAN 300822 and GATES FB1022.

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

12 Radiator Fan Shroud parts for the 2018 Ram 2500 come from 3 brands — MOPAR, DORMAN and VDO / CONTINENTAL.

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

32 Radiator Hose parts are listed for the 2018 Ram 2500, from GATES, MOPAR, CONTINENTAL and 3 other brands. CONTINENTAL 66844 carries the "Popular" badge. The notes list position, dimensions and spec qualifiers wherever the manufacturer distinguishes between variants.

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 both parts for the 2018 Ram 2500.

This group includes MOPAR 68050200AA and MOPAR 68050199AA.