The 2015 Ram 3500 has 97 cooling system parts with verified fitment on this page — 18 part types and 31 brands, covering all 3 engine options (5.7L V8, 6.4L V8 and 6.7L L6 DIESEL Turbocharged). Each part includes a manufacturer part number and application notes.
The cooling system system on the 2015 Ram 3500 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 / Antifreeze (22 parts), Radiator (13 parts) and Coolant Reservoir (9 parts). The other 15 part types cover the remaining 53 parts.
The 2015 Ram 3500 was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2015 Ram 3500 cooling system parts are MOPAR (17 parts), DORMAN (10 parts) and PRESTONE (8 parts), plus 28 more brands. Quality grades include Standard Replacement, Economy and Premium.
16 parts on this 2015 Ram 3500 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including FVP MV5050GAL (Coolant / Antifreeze) and DORMAN 626823 (Coolant Hose / Pipe). Click any part number to see every vehicle that part fits.
Coolant / Antifreeze
Compatible With All Colors
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | AF3055 | 🇺🇸 US 🇨🇦 CA | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Popular Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | MV5050GAL | 🇺🇸 US 🇨🇦 CA | Extended LifeAll Makes / All Models | View on Amazon |
| PEAK Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | BQA1GAL | 🇺🇸 US 🇨🇦 CA | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| PRESTONE Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | AF3100 | 🇺🇸 US 🇨🇦 CA | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| VALVOLINE Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | 719009 | 🇺🇸 US 🇨🇦 CA | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | ZXG051 | 🇺🇸 US 🇨🇦 CA | G05 Yellow1 Gallon | View on Amazon |
| PRESTONE Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | AFC12100 | 🇺🇸 US 🇨🇦 CA | Command Nitrite Free Extended Life CoolantYellow Nitrite Free OAT | View on Amazon |
| VALVOLINE Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | 846439 | 🇺🇸 US 🇨🇦 CA | HD Nitrite Free Extended Life Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | AF2100 | 🇺🇸 US 🇨🇦 CA | All Vehicles10yr/300k mi | View on Amazon |
| PEAK Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | PKP1GAL | 🇺🇸 US 🇨🇦 CA | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | PXA1GAL | 🇺🇸 US 🇨🇦 CA | Global Lifetime1 Gallon | View on Amazon |
| PRESTONE Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | AF6900 | 🇺🇸 US 🇨🇦 CA | MAX Jeep/Ram/Dodge/Chrysler1 Gallon | View on Amazon |
| PRESTONE Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | AFMAX | 🇺🇸 US 🇨🇦 CA | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | 105027 | 🇺🇸 US 🇨🇦 CA | DEX-Cool Extended LifeDexcool (with DE-Ionized Water) (with Bitterant) 1 Gallon | View on Amazon |
| VALVOLINE Popular Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | ZXEL1 | 🇺🇸 US 🇨🇦 CA | Dex-Cool Orange1 Gallon | View on Amazon |
| AISIN Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | ACD007 | 🇺🇸 US 🇨🇦 CA | PurpleOAT | View on Amazon |
| FVP Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | DEX5050GAL | 🇺🇸 US 🇨🇦 CA | Extended Life Blend1 Gallon | View on Amazon |
| PEAK Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | NAP1GAL | 🇺🇸 US 🇨🇦 CA | OET North American Extended Life Purple1 Gallon | View on Amazon |
| PRESTONE Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | AF3400 | 🇺🇸 US 🇨🇦 CA | Prime OrangeOrange Compatible | View on Amazon |
| PRESTONE Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | AF850 | 🇺🇸 US 🇨🇦 CA | DEX-Cool Extended Life1 Gallon | View on Amazon |
| VALVOLINE Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | 888374 | 🇺🇸 US 🇨🇦 CA | American Vehicle Orange1 Gallon | View on Amazon |
| VALVOLINE Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | 877981 | 🇺🇸 US 🇨🇦 CA | 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.
22 Coolant / Antifreeze parts for the 2015 Ram 3500 come from 6 brands — PRESTONE, VALVOLINE, PEAK and 3 other brands. The "Popular" part is FVP MV5050GAL.
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 3 other brands supply 9 parts: built to original-equipment specification. A representative part number is ACDELCO 105027.
Coolant Hose / Pipe
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular Fits: 6.7L L6 DIESEL Turbocharged | 626823 | 🇺🇸 US 🇨🇦 CA | OutletOn Reservoir | View on Amazon |
| DORMAN Fits: 6.7L L6 DIESEL Turbocharged | 626572 | 🇺🇸 US 🇨🇦 CA | Pipe | View on Amazon |
| MOPAR Fits: 6.4L V8 | 68184913AE | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisTo Radiator | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 52014726AA | 🇺🇸 US 🇨🇦 CA | Fits Cummins EngineSupply | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68236733AA | 🇺🇸 US 🇨🇦 CA | Fits Cummins EngineVent | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68228501AB | 🇺🇸 US 🇨🇦 CA | Fits Cummins EngineReturn | View on Amazon |
This table covers the hard pipes and extra hoses in the coolant circuit.
6 Coolant Hose / Pipe parts for the 2015 Ram 3500 come from 2 brands — MOPAR and DORMAN. The "Popular" part is DORMAN 626823.
This group includes DORMAN 626823, DORMAN 626572 and MOPAR 68184913AE and the remaining parts above.
Coolant Hose / Pipe Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTOTECNICA Fits: 6.7L L6 DIESEL Turbocharged | RM0720252 | 🇺🇸 US 🇨🇦 CA | O-Ring | View on Amazon |
| ELRING Fits: 6.7L L6 DIESEL Turbocharged | 106320 | 🇺🇸 US 🇨🇦 CA | Material: EPDM ethylene propylene diene Monomer (M-class) rubber | View on Amazon |
| ELRING Fits: 6.7L L6 DIESEL Turbocharged | B63030 | 🇺🇸 US 🇨🇦 CA | RWDCab & Chassis | View on Amazon |
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.
3 Coolant Hose / Pipe Seal parts are listed for the 2015 Ram 3500, from ELRING and AUTOTECNICA.
This group includes AUTOTECNICA RM0720252, ELRING 106320 and ELRING B63030.
Coolant Hose Connector / Flange Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 6.7L L6 DIESEL Turbocharged | 109260 | 🇺🇸 US 🇨🇦 CA | Cab & ChassisLaramie | View on Amazon |
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.
One part is listed for the 2015 Ram 3500 — ELRING 109260.
Coolant Level Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTOTECNICA Fits: 6.7L L6 DIESEL Turbocharged | DG0716969 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68354536AA | 🇺🇸 US 🇨🇦 CA | Fits Cummins EngineMega Cab | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 6.7L L6 DIESEL Turbocharged | FLS318 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | 5S17647 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
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.
4 Coolant Level Sensor parts for the 2015 Ram 3500 come from 4 brands — AUTOTECNICA, MOPAR, STANDARD MOTOR PRODUCTS and 1 other brand.
Part numbers include AUTOTECNICA DG0716969, MOPAR 68354536AA and STANDARD MOTOR PRODUCTS FLS318, among others listed above.
Coolant Reservoir
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular Fits: 6.4L V8 | 603840 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| AUTOTECNICA Fits: 6.7L L6 DIESEL Turbocharged | RM0723321 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DORMAN Fits: 6.7L L6 DIESEL Turbocharged | 603839 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GPD Fits: 6.4L V8 | 2411293 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MOPAR Fits: 6.4L V8 | 68184910AE | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisRegular Cab Chassis Wheelbase 1 | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68166475AB | 🇺🇸 US 🇨🇦 CA | Fits Cummins EngineRegular Cab | View on Amazon |
| SKP Fits: 6.7L L6 DIESEL Turbocharged | SK603839 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| TECHPRO Fits: 6.4L V8 | CH3014187 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| TECHPRO Fits: 6.4L V8 | CH3014188 | 🇺🇸 US 🇨🇦 CA | Includes Cap | View on Amazon |
This table covers the overflow / expansion tanks that hold extra coolant.
9 Coolant Reservoir parts are listed for the 2015 Ram 3500, from DORMAN, MOPAR, TECHPRO and 3 other brands. DORMAN 603840 carries the "Popular" badge.
Listed part numbers: DORMAN 603840, AUTOTECNICA RM0723321 and DORMAN 603839, plus the other parts above.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTOTECNICA Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | GM0714619 | 🇺🇸 US 🇨🇦 CA | Diameter: 45mmPressure Rating: 20psi | View on Amazon |
| CALORSTAT Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | RC0144 | 🇺🇸 US 🇨🇦 CA | Maximum Pressure Rating: 20.0 PS | View on Amazon |
| GATES Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | 31569 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| MOTORAD Fits: 6.4L V8, 6.7L L6 DIESEL Turbocharged | T73 | 🇺🇸 US 🇨🇦 CA | Standard | 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.
4 Coolant Reservoir Cap parts are listed for the 2015 Ram 3500, from AUTOTECNICA, CALORSTAT, GATES and 1 other brand.
This group includes AUTOTECNICA GM0714619, CALORSTAT RC0144 and GATES 31569 and the remaining parts above.
Cooling System Tester Adapter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: 6.7L L6 DIESEL Turbocharged | 3128 | 🇺🇸 US 🇨🇦 CA | StandardRadiator Cap Adapter | View on Amazon |
| MOTORAD Fits: 6.7L L6 DIESEL Turbocharged | 3034 | 🇺🇸 US 🇨🇦 CA | Cooling System Pressure | View on Amazon |
This table covers the adapters used to pressure-test this cooling system.
2 Cooling System Tester Adapter parts for the 2015 Ram 3500 come from MOTORAD.
Listed part numbers: MOTORAD 3128 and MOTORAD 3034.
Hose Clamp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68211466AA | 🇺🇸 US 🇨🇦 CA | Fits Cummins EngineRegular Cab | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 55056718AA | 🇺🇸 US 🇨🇦 CA | Fits Cummins EngineRegular Cab | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 6506848AA | 🇺🇸 US 🇨🇦 CA | Fits Heater HoseCrew Cab Wheelbase 2 | View on Amazon |
This table covers the Hose clamps.
3 Hose Clamp parts for the 2015 Ram 3500 come from MOPAR.
Listed part numbers: MOPAR 68211466AA, MOPAR 55056718AA and MOPAR 6506848AA.
Intercooler
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CSF Popular Fits: 6.7L L6 DIESEL Turbocharged | 6098 | 🇺🇸 US 🇨🇦 CA | Tube & Fin | View on Amazon |
| TYC Popular Fits: 6.7L L6 DIESEL Turbocharged | 18030 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| CSF Fits: 6.7L L6 DIESEL Turbocharged | 6076 | 🇺🇸 US 🇨🇦 CA | Plate & Bar Core Design | View on Amazon |
| DORMAN Fits: 6.7L L6 DIESEL Turbocharged | 918510 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GPD Fits: 6.7L L6 DIESEL Turbocharged | 2711288 | 🇺🇸 US 🇨🇦 CA | Standard Version of OEM Intercooler | View on Amazon |
| GPD Fits: 6.7L L6 DIESEL Turbocharged | 2711295 | 🇺🇸 US 🇨🇦 CA | Heavy Duty Plate/Bar Version of OEM Intercooler | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 52014733AA | 🇺🇸 US 🇨🇦 CA | Fits Cummins EngineRegular Cab | View on Amazon |
| SPECTRA PREMIUM Fits: 6.7L L6 DIESEL Turbocharged | 44011308 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Intercooler Air Hose / Pipe
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BRUTE POWER Popular Fits: 6.7L L6 DIESEL Turbocharged | HKT9003 | 🇺🇸 US 🇨🇦 CA | Turbocharger To Intercooler (Hot Side) | View on Amazon |
| CONTINENTAL Popular Fits: 6.7L L6 DIESEL Turbocharged | 65402 | 🇺🇸 US 🇨🇦 CA | Kit | View on Amazon |
| DORMAN Fits: 6.7L L6 DIESEL Turbocharged | 667311 | 🇺🇸 US 🇨🇦 CA | Right | View on Amazon |
| DORMAN Fits: 6.7L L6 DIESEL Turbocharged | 667435 | 🇺🇸 US 🇨🇦 CA | Left | View on Amazon |
| GATES Fits: 6.7L L6 DIESEL Turbocharged | 26573 | 🇺🇸 US 🇨🇦 CA | Turbocharger Hose MoldedStandard | View on Amazon |
| GATES Fits: 6.7L L6 DIESEL Turbocharged | 26574 | 🇺🇸 US 🇨🇦 CA | Turbocharger Hose MoldedStandard | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 52014734AC | 🇺🇸 US 🇨🇦 CA | Charge Air Cooler Duct | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 52014735AB | 🇺🇸 US 🇨🇦 CA | Charge Air Cooler Duct | View on Amazon |
This table covers the Intercooler Air Hose pipes.
8 Intercooler Air Hose / Pipe parts for the 2015 Ram 3500 come from 5 brands — DORMAN, GATES, MOPAR and 2 other brands. The "Popular" part is BRUTE POWER HKT9003.
Listed part numbers: BRUTE POWER HKT9003, CONTINENTAL 65402 and DORMAN 667311, plus the other parts above.
Intercooler Hose / Pipe Clamp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 6.7L L6 DIESEL Turbocharged | 55246 | 🇺🇸 US 🇨🇦 CA | OutletAt Cooler | View on Amazon |
This table covers the Intercooler Hose / Pipe clamps.
One part is listed for the 2015 Ram 3500 — DORMAN 55246.
Intercooler Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68189159AA | 🇺🇸 US 🇨🇦 CA | Charge Air Cooler Seal | View on Amazon |
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.
One part is listed for the 2015 Ram 3500 — MOPAR 68189159AA.
Radiator
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD Fits: 6.7L L6 DIESEL Turbocharged | 13490C | 🇺🇸 US 🇨🇦 CA | PRIMARY | View on Amazon |
| GPD Fits: 6.7L L6 DIESEL Turbocharged | 13492 | 🇺🇸 US 🇨🇦 CA | Secondary | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CSF Popular Fits: 6.7L L6 DIESEL Turbocharged | 3664 | 🇺🇸 US 🇨🇦 CA | 1 RowPlastic Tank / Aluminum Core | View on Amazon |
| CSF Popular Fits: 6.7L L6 DIESEL Turbocharged | 3663 | 🇺🇸 US 🇨🇦 CA | with Quick-Connect Oil Cooler Fittings.Upgraded with Higher Performance & Stronger B-Tube Design | View on Amazon |
| TYC Popular Fits: 6.7L L6 DIESEL Turbocharged | 13490 | 🇺🇸 US 🇨🇦 CA | PrimaryType 2 | View on Amazon |
| AGILITY Fits: 6.7L L6 DIESEL Turbocharged | 8013490 | 🇺🇸 US 🇨🇦 CA | Primary Radiator | View on Amazon |
| DENSO Fits: 6.7L L6 DIESEL Turbocharged | 2219549 | 🇺🇸 US 🇨🇦 CA | Fits Big Horn or Laramie Limited or Laramie Longhorn or Lone StarTrans: DG7 | View on Amazon |
| FVP Fits: 6.7L L6 DIESEL Turbocharged | RAD13490 | 🇺🇸 US 🇨🇦 CA | Automatic trans. | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 52014738AA | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisCummins Engine | View on Amazon |
| OSC Fits: 6.7L L6 DIESEL Turbocharged | 13490 | 🇺🇸 US 🇨🇦 CA | Automatic trans. | View on Amazon |
| SPECTRA PREMIUM Fits: 6.7L L6 DIESEL Turbocharged | CU13490 | 🇺🇸 US 🇨🇦 CA | Main Unit | View on Amazon |
| TYC Fits: 6.7L L6 DIESEL Turbocharged | 13492 | 🇺🇸 US 🇨🇦 CA | AuxiliarySecondary Radiator | View on Amazon |
| UAC Fits: 6.7L L6 DIESEL Turbocharged | RA13490C | 🇺🇸 US 🇨🇦 CA | 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.
13 Radiator parts for the 2015 Ram 3500 come from 10 brands — GPD, CSF, TYC and 7 other brands. The "Popular" part is CSF 3664.
The Economy section: 2 options from GPD. GPD 13490C is listed in this group.
Standard Replacement: 11 parts, from CSF, TYC, AGILITY and 6 other brands. A representative part number is CSF 3664.
Radiator Drain Petcock
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 6.7L L6 DIESEL Turbocharged | 61134 | 🇺🇸 US 🇨🇦 CA | Push-in twist lock | View on Amazon |
This table covers the petcocks used to drain the radiator.
One part is listed for the 2015 Ram 3500 — DORMAN 61134.
Radiator Fan Assembly
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TECHPRO Fits: 6.7L L6 DIESEL Turbocharged | CH3115166 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| VARIOUS MFR Fits: 6.7L L6 DIESEL Turbocharged | CH3115166 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator.
2 Radiator Fan Assembly parts are listed for the 2015 Ram 3500, from TECHPRO and VARIOUS MFR.
This group includes TECHPRO CH3115166 and the remaining parts above.
Radiator Fan Blade
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 6.7L L6 DIESEL Turbocharged | 621592 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 52014730AA | 🇺🇸 US 🇨🇦 CA | Fits Cummins EngineRegular Cab | View on Amazon |
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.
2 Radiator Fan Blade parts are listed for the 2015 Ram 3500, from DORMAN and MOPAR.
Listed part numbers: DORMAN 621592 and MOPAR 52014730AA.
Radiator Fan Clutch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HAYDEN Popular Fits: 6.7L L6 DIESEL Turbocharged | 3292 | 🇺🇸 US 🇨🇦 CA | Electronic | View on Amazon |
| US MOTOR WORKS Popular Fits: 6.7L L6 DIESEL Turbocharged | 22347 | 🇺🇸 US 🇨🇦 CA | Electronic | View on Amazon |
| FOUR SEASONS Fits: 6.7L L6 DIESEL Turbocharged | 46112 | 🇺🇸 US 🇨🇦 CA | Electronic | View on Amazon |
| FVP Fits: 6.7L L6 DIESEL Turbocharged | 22347 | 🇺🇸 US 🇨🇦 CA | Electronic | View on Amazon |
| GPD Fits: 6.7L L6 DIESEL Turbocharged | 2911414 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 52014729AC | 🇺🇸 US 🇨🇦 CA | Fits Cummins EngineRegular Cab | View on Amazon |
| SKP Fits: 6.7L L6 DIESEL Turbocharged | SK128064 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
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.
7 Radiator Fan Clutch parts for the 2015 Ram 3500 come from 7 brands — HAYDEN, US MOTOR WORKS, FOUR SEASONS and 4 other brands. The "Popular" part is HAYDEN 3292.
This group includes HAYDEN 3292, US MOTOR WORKS 22347 and FOUR SEASONS 46112 and the remaining parts above.
Buying Cooling System Parts for a 2015 Ram 3500
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.
- Match the engine first. Every cooling system part here is engine-specific; each row shows which engine(s) it fits.
- 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 / Antifreeze and Radiator .
Frequently Asked Questions
How many cooling system parts fit the 2015 Ram 3500?
Our catalog currently lists 97 cooling system parts for the 2015 Ram 3500 across 18 subcategories and 31 brands, covering all 3 engine options (5.7L V8, 6.4L V8 and 6.7L L6 DIESEL Turbocharged). Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 2015 Ram 3500 engines?
Yes. Every cooling system part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of cooling system problems on a 2015 Ram 3500?
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 2015 Ram 3500 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 2015 Ram 3500?
First match the engine — each row shows which engine(s) the part fits. 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 2015 Ram 3500
Cooling System Parts for Other Ram 3500 Years
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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.