2018 Ram 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

21 Coolant / Antifreeze parts are listed for the 2018 Ram 3500, from PRESTONE, VALVOLINE, PEAK and 3 other brands. FVP MV5050GAL carries the "Popular" badge. All of them fit every engine offered in the 2018 3500.

The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.

In the Economy grade, FVP, PEAK, PRESTONE and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is FVP MV5050GAL.

The Heavy Duty section lists 3 options from VALVOLINE and PRESTONE — rated for severe service. VALVOLINE ZXG051 is listed in this group.

The Premium section lists 5 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.

The Standard Replacement section lists 8 options from VALVOLINE, PRESTONE, ACDELCO and 2 other brands — built to original-equipment specification. ACDELCO 105027 is listed in this group.

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

7 Coolant Hose / Pipe parts are listed for the 2018 Ram 3500, from 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

3 Coolant Hose / Pipe Seal parts for the 2018 Ram 3500 come from 2 brands — ELRING and AUTOTECNICA.

This group includes AUTOTECNICA RM0720252, ELRING 106320 and ELRING B63030.

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

This group shows a single part: 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 are listed for the 2018 Ram 3500, from AUTOTECNICA, MOPAR, STANDARD MOTOR PRODUCTS and 1 other brand. 1 part fits every engine; the other 3 are engine-specific.

Part numbers include AUTOTECNICA DG0716969, MOPAR 68354536AA and STANDARD MOTOR PRODUCTS FLS318, among others listed above.

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

14 Coolant Reservoir parts for the 2018 Ram 3500 come from 7 brands — DORMAN, MOPAR, GPD and 4 other brands. The "Popular" part is DORMAN 603571.

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 for the 2018 Ram 3500 come from 4 brands — MOTORAD, AUTOTECNICA, CALORSTAT and 1 other brand.

Listed part numbers: AUTOTECNICA GM0714619, CALORSTAT RC0144 and GATES 31569, plus the other parts above.

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

4 Cooling System Tester Adapter parts are listed for the 2018 Ram 3500, from 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

MOPAR supplies the 7 Hose Clamp parts for the 2018 Ram 3500.

Listed part numbers: MOPAR 52006750, MOPAR 32002370 and MOPAR 4809147AA, plus the other parts above.

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

7 Intercooler parts are listed for the 2018 Ram 3500, from CSF, TYC, DORMAN and 3 other brands. CSF 6098 carries the "Popular" badge.

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 are listed for the 2018 Ram 3500, from DORMAN, GATES, MOPAR and 1 other brand. BRUTE POWER HKT9003 carries the "Popular" badge.

This group includes BRUTE POWER HKT9003, DORMAN 667311 and DORMAN 667435 and the remaining parts above.

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

2 Intercooler Hose / Pipe Clamp parts for the 2018 Ram 3500 come from DORMAN.

Part numbers include 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

This group shows a single part: 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

32 Radiator parts are listed for the 2018 Ram 3500, from CSF, TYC, FVP and 10 other brands. CSF 3739 carries the "Popular" badge. Economy and Standard Replacement are all represented, and Standard Replacement alone accounts for 19 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 are listed for the 2018 Ram 3500, from GATES, MOTORAD, CALORSTAT and 2 other brands. GATES 31528 carries the "Popular" badge.

The Locking Replacement section lists 2 options from GATES and MOTORAD — grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. GATES 31518 is listed in this group.

The Standard Replacement section: 5 options from GATES, MOTORAD, CALORSTAT and 2 other brands. GATES 31528 is listed in this group.

This group includes GATES 31528, GATES 31518 and MOTORAD ST16 and the remaining parts above.

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

This group shows a single part: 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 for the 2018 Ram 3500 come from 7 brands — VARIOUS MFR, GPD, TYC and 4 other brands. The "Popular" part is TYC 622360.

The Economy section: 2 options from GPD and VARIOUS MFR. GPD 2811742 is listed in this group.

Standard Replacement: 4 parts, from TYC, VDO / CONTINENTAL, MOPAR and 1 other brand. A representative part number is TYC 622360.

2 further parts sit outside the graded sections, 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 for the 2018 Ram 3500 come from 3 brands — DORMAN, MOPAR and SKP.

Listed part numbers: DORMAN 620057, DORMAN 621592 and MOPAR 55056947AA, plus the other parts 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 are listed for the 2018 Ram 3500, from HAYDEN, US MOTOR WORKS, FOUR SEASONS and 5 other brands. HAYDEN 2962 carries the "Popular" badge.

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 are listed for the 2018 Ram 3500, from DORMAN and GATES.

Part numbers include DORMAN 300822 and GATES FB1022.

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

11 Radiator Fan Shroud parts are listed for the 2018 Ram 3500, from DORMAN, MOPAR and VDO / CONTINENTAL.