2025 Ram 2500 Engine Parts

This table covers the Barometric pressure sensors. Typical signs include a check-engine light for MAP or fuel-rail pressure, or a limp mode under load. A vacuum leak or a clogged reference line will fake a bad pressure sensor. Read more

2 Barometric Pressure Sensor parts are listed for the 2025 Ram 2500, from MOPAR and STANDARD MOTOR PRODUCTS.

Part numbers include MOPAR 53034091AD and STANDARD MOTOR PRODUCTS AS414.

This table covers the camshafts that open the valves. Read more

4 Camshaft parts are listed for the 2025 Ram 2500, from MELLING and MOPAR.

In the Heavy Duty / Towing grade, MELLING supplies 1 part: grouped under the catalog's "Heavy Duty / Towing" designation — the notes column spells out what sets them apart. A representative part number is MELLING 23109.

In the High Performance grade, MELLING supplies 2 parts: engineered beyond original-equipment specification. A representative part number is MELLING 23209.

The Standard Replacement section lists 1 option from MOPAR — built to original-equipment specification. MOPAR 68635422AA is listed in this group.

This group includes MELLING 23109, MELLING 23209 and MELLING 23309 and the remaining parts above.

This table covers the Camshaft 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

One part is listed for the 2025 Ram 2500 — MOPAR 68443542AA.

This table covers the Camshaft plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes. Read more

2 Camshaft Plug parts are listed for the 2025 Ram 2500, from MELLING and MOPAR.

Part numbers include MELLING MEP334 and MOPAR 6507663AA.

This table covers the Camshaft Retainer / Thrust plates. Typical signs include warpage, cracks, or a plate that no longer locates the assembly. Confirm which plate the notes describe — backing plates, clutch plates and strike plates are different parts. Read more

2 Camshaft Retainer / Thrust Plate parts for the 2025 Ram 2500 come from 2 brands — MELLING and MOPAR.

Listed part numbers: MELLING MD200 and MOPAR 53022178AE.

This table covers the bearings in the connecting-rod big ends. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

One part is listed for the 2025 Ram 2500 — MAHLE / CLEVITE CB2036AP.

This table covers the Connecting Rod bolts. Read more

This group shows a single part: MOPAR 6508245AA.

This table covers lower / conversion gasket sets for oil-pan and related joints. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration. Read more

One part is listed for the 2025 Ram 2500 — MOPAR 68230065AA.

This table covers the crankshafts that turn piston motion into rotation. Read more

One part is listed for the 2025 Ram 2500 — MOPAR 5038339AE.

This table covers the main bearings that support the crankshaft in the block. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

4 Crankshaft Main Bearing parts for the 2025 Ram 2500 come from MOPAR.

Part numbers include MOPAR 68102975AB, MOPAR 68102977AB and MOPAR 68102976AB, among others listed above.

This table covers the front and rear seals that keep oil in at the crankshaft. 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

4 Crankshaft Seal parts for the 2025 Ram 2500 come from 3 brands — MOPAR, DORMAN and FEL-PRO.

Listed part numbers: DORMAN 635333, FEL-PRO TCS46174 and MOPAR 53021585AD, plus the other parts above.

This table covers the cylinder heads that close the top of the block. Read more

2 Cylinder Head parts for the 2025 Ram 2500 come from MOPAR.

Part numbers include MOPAR 68630244AA and MOPAR 68630245AA.

This table covers the Cylinder Head Alignment Dowel pins. Read more

One part is listed for the 2025 Ram 2500 — MOPAR 5203466.

This table covers the head gaskets that seal the block to the cylinder head. 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

7 Cylinder Head Gasket parts are listed for the 2025 Ram 2500, from FEL-PRO, MAHLE / CLEVITE, MOPAR and 1 other brand. FEL-PRO 26568PT carries the "Popular" badge.

Part numbers include FEL-PRO 26568PT, FEL-PRO 26569PT and MAHLE / CLEVITE 55457, among others listed above.

This table covers multi-piece gasket sets for a cylinder-head job. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration. Read more

2 Cylinder Head Gasket Set parts are listed for the 2025 Ram 2500, from MAHLE / CLEVITE and MOPAR.

This group includes MAHLE / CLEVITE HS55457A and MOPAR 68761796AA.

This table covers the Cylinder Head plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes. Read more

This group shows a single part: MOPAR 4556020AB.

This table covers the block heaters that warm the coolant or oil in cold weather. Read more

This group shows a single part: MOPAR 5149022AC.

This table covers the Engine covers. Read more

MOPAR supplies the 7 Engine Cover parts for the 2025 Ram 2500. MOPAR 68196979AA carries the "Popular" badge. 5 parts fit every engine; the other 2 are engine-specific.

Part numbers include MOPAR 68196979AA, MOPAR 4861784AB and MOPAR 68196978AA, among others listed above.

This table covers full gasket kits covering the joints opened in an engine rebuild. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration. Read more

One part is listed for the 2025 Ram 2500 — MOPAR 68312489AB.

This table covers the exhaust valves that let combustion gas out of the cylinder. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one. Read more

This group shows a single part: MOPAR 4893173AE.

This table covers the Expansion plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes. Read more

MOPAR supplies both parts for the 2025 Ram 2500.

Part numbers include MOPAR 68060349AA and MOPAR 6036307AA.

This table covers the crankshaft pulleys / harmonic balancers at the front of the engine. Read more

MOPAR supplies both parts for the 2025 Ram 2500.

Part numbers include MOPAR 53022083AA and MOPAR 4893285AA.

This table covers the Intake manifolds. Typical signs include an exhaust tick, a vacuum leak, or a gasket that has burned through. Replace the gaskets and hardware; a warped flange will leak with a new gasket alone. Read more

This group shows a single part: MOPAR 68585863AA.

This table covers the Intake Manifold actuators. Typical signs include a door or range that will not move, or a click with no motion. Confirm the command signal before replacing the actuator — a failed module looks the same. Read more

One part is listed for the 2025 Ram 2500 — MOPAR 4861795AE.

This table covers the Intake Manifold bolts. Read more

One part is listed for the 2025 Ram 2500 — MOPAR 6104124AA.

This table covers the gaskets between the intake manifold and the cylinder head. 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

One part is listed for the 2025 Ram 2500 — MOPAR 4627633AA.

This table covers the intake valves that let air (and fuel, on port-injected engines) into the cylinder. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one. Read more

This group shows a single part: MOPAR 5106392AA.

This table covers the long-block engine assemblies (block, crank, heads). Read more

MOPAR supplies both parts for the 2025 Ram 2500.

This group includes MOPAR 5158119BA and MOPAR 5158128BA.

This table covers the mounts that hold the engine to the chassis. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes. Read more

5 Motor Mount parts for the 2025 Ram 2500 come from 2 brands — ANCHOR and DEA / MARMON RIDE CONTROL.

Part numbers include ANCHOR 3563, ANCHOR 3569 and ANCHOR 3581, among others listed above.

This table covers the brackets that mount the Motor Mount. 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

This group shows a single part: MOPAR 68413695AA.

This table covers the isolators in an engine mount. Read more

MOPAR supplies the 3 Motor Mount Isolator parts for the 2025 Ram 2500.

Part numbers include MOPAR 68362401AB, MOPAR 68349283AB and MOPAR 68663394AB.

This table covers the engine oils listed by grade and specification for this engine. Typical signs include a low-oil lamp, knocking after a long interval, or oil that has gone thin and black well before the next service. Match the viscosity and spec in the notes (and on the filler cap). The tables group grades — they are not interchangeable. Read more

4 Oil parts for the 2025 Ram 2500 come from 2 brands — IDEMITSU and MOBIL.

Listed part numbers: IDEMITSU 30041116750, IDEMITSU 30041116953 and MOBIL 112628, plus the other parts above.

This table covers the heat exchangers that cool engine oil. Typical signs include oil at the cooler fittings, or coolant that looks like a milkshake. Pressure-test both circuits after a cooler swap — a leak here mixes oil and coolant. Read more

2 Oil Cooler parts for the 2025 Ram 2500 come from 2 brands — MOPAR and STANDARD MOTOR PRODUCTS.

Part numbers include MOPAR 4893200AC and STANDARD MOTOR PRODUCTS OCK33.

This table covers the Oil Cooler Hose pipes. Read more

This group shows a single part: MOPAR 68359800AA.

This table covers the Oil Dipstick tubes. Read more

2 Oil Dipstick / Tube parts for the 2025 Ram 2500 come from MOPAR.

This group includes MOPAR 53021321AK and MOPAR 53021322AG.

This table covers the drain plugs in the oil pan. Read more

4 Oil Drain Plug parts for the 2025 Ram 2500 come from 2 brands — DORMAN and MOPAR.

Part numbers include DORMAN 090172, DORMAN 090173 and MOPAR 6504894AA, among others listed above.

This table covers the caps on the oil filler neck. Read more

3 Oil Filler Cap parts for the 2025 Ram 2500 come from 2 brands — MOTORAD and CALORSTAT.

Listed part numbers: CALORSTAT OC2334, MOTORAD MO158 and MOTORAD MO111.

This table covers the oil filters that screw onto this engine's filter mount. Typical signs include low oil pressure after a service, or a filter that will not spin off because the old gasket stayed on the block. Lube the new gasket and tighten to the spec on the box; a double-gasket install dumps the sump on the first drive. Read more

15 Oil Filter parts for the 2025 Ram 2500 come from 12 brands — VARIOUS MFR, WIX, ACDELCO and 9 other brands. The "Popular" part is WIX 57060XP.

The Economy section lists 6 options from CHAMP / LUBER-FINER, FRAM, FVP and 3 other brands — the catalog's value-priced group. CHAMP / LUBER-FINER PH48 is listed in this group.

The High Performance / Heavy Duty section lists 2 options from WIX and MOBIL — grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. WIX 57060XP is listed in this group.

Standard Replacement: 7 parts, from ACDELCO, WIX, HASTINGS / BALDWIN and 3 other brands. A representative part number is ACDELCO PF48.

This table covers the Oil Filter adapters. Read more

One part is listed for the 2025 Ram 2500 — MOPAR 4893181AC.

This table covers the Oil Filter Adapter Gasket O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove. Read more

One part is listed for the 2025 Ram 2500 — MOPAR 68241151AA.

This table covers the Oil Level Sensor Gasket O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove. Read more

This group shows a single part: MOPAR 53034112AA.

This table covers the oil pans that hold the engine's oil sump. Read more

3 Oil Pan parts are listed for the 2025 Ram 2500, from MOPAR and SPECTRA PREMIUM.

This group includes MOPAR 4893207AB, MOPAR 4893207AC and SPECTRA PREMIUM CRP34A.

This table covers the gaskets between the oil pan and the block. 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

This group shows a single part: FEL-PRO OS30870.

This table covers the Oil pumps. Typical signs include noise from the pump, no pressure, or fluid that never arrives at the outlet. Prime or fill the pump as the notes require. A dry start is a common way to kill a new unit. Read more

6 Oil Pump parts for the 2025 Ram 2500 come from 2 brands — MELLING and MOPAR. The "Popular" part is MELLING 10452HV.

The High Performance section: 3 options from MELLING. MELLING 10452HV is listed in this group.

Standard Replacement: 3 parts, from MELLING and MOPAR. A representative part number is MELLING M462.

Listed part numbers: MELLING 10452HV, MELLING 10452 and MELLING 10452BR, plus the other parts above.

This table covers the pickup tubes and screens that feed the oil pump. Read more

3 Oil Pump Pickup Tube / Screen parts are listed for the 2025 Ram 2500, from MELLING, MOPAR and SEALED POWER.

This group includes MELLING 388S, MOPAR 4893416AA and SEALED POWER 22415096.

This table covers the O-rings that seal the oil-pump pickup tube. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove. Read more

This group shows a single part: MOPAR 53020861.

This table covers the Oil Temperature senders. Read more

MOPAR supplies both parts for the 2025 Ram 2500.

This group includes MOPAR 68722914AA and MOPAR 68724456AA.

This table covers the pistons that travel in each cylinder. Typical signs include knock, blow-by, or a cylinder that will not hold compression. Piston work is a short-block job. Match bore, pin and ring pack in the notes — not the photo. Read more

MOPAR supplies both parts for the 2025 Ram 2500.

This group includes MOPAR 68230025AB and MOPAR 68230024AB.

This table covers the rings that seal each piston to the cylinder wall. Read more

2 Piston Ring parts are listed for the 2025 Ram 2500, from HASTINGS MANUFACTURING and MOPAR.

Listed part numbers: HASTINGS MANUFACTURING 2D5873 and MOPAR 68230035AA.

This table covers the pushrods that transfer lifter motion to the rocker arms. Read more

5 Push Rod parts are listed for the 2025 Ram 2500, from MELLING, MOPAR and SBI. MELLING MPR667 carries the "Popular" badge.

Part numbers include MELLING MPR667, MELLING MPR668 and MOPAR 5045516AA, among others listed above.

This table covers the rocker arms that transfer cam motion to the valves. Read more

4 Rocker Arm parts for the 2025 Ram 2500 come from 2 brands — MELLING and QUALCAST.

Listed part numbers: MELLING MRK1552I, MELLING MRK1553E and QUALCAST 421552I, plus the other parts above.

This table covers the timing chains that keep the cams in time with the crank. Read more

3 Timing Chain parts are listed for the 2025 Ram 2500, from MELLING, MOPAR and PREFERRED COMPONENTS INC.

Listed part numbers: MELLING 750, MOPAR 53022316AC and PREFERRED COMPONENTS INC C276.

This table covers kits that group a timing chain with the related tensioners and guides. Read more

6 Timing Chain & Component Kit parts for the 2025 Ram 2500 come from 2 brands — MELLING and PREFERRED COMPONENTS INC. The "Popular" part is MELLING 3750SX.

The Economy section: 3 options from PREFERRED COMPONENTS INC and MELLING. MELLING 3750SHVVT is listed in this group.

The High Performance section: 1 option from MELLING. MELLING 485769 is listed in this group.

Standard Replacement: 2 parts, from MELLING. A representative part number is MELLING 3750SX.

Listed part numbers: MELLING 3750SX, MELLING 3750SHVVT and PREFERRED COMPONENTS INC TS10276, plus the other parts above.

This table covers the gaskets that seal the Timing Chain Cover. 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

One part is listed for the 2025 Ram 2500 — MOPAR 53021521AD.

This table covers the guides and dampers that keep the timing chain on its path. Read more

3 Timing Chain Guide / Damper parts are listed for the 2025 Ram 2500, from MELLING, MOPAR and PREFERRED COMPONENTS INC.

Listed part numbers: MELLING BG5599, MOPAR 4893429AA and PREFERRED COMPONENTS INC R76146.

This table covers the tensioners that keep the timing chain taut. Typical signs include belt flutter, a chirp that returns after a new belt, or an arm that no longer damps. Replace the tensioner with the belt at higher mileage. Read more

3 Timing Chain Tensioner parts for the 2025 Ram 2500 come from 3 brands — MELLING, MOPAR and PREFERRED COMPONENTS INC.

Part numbers include MELLING BT7002, MOPAR 53022115AH and PREFERRED COMPONENTS INC T66162H.

This table covers the Timing Cover bolts. Read more

This group shows a single part: MOPAR 6506332AA.

This table covers the crankshaft sprockets that drive the timing chain or belt. Read more

4 Timing Crank Sprocket parts for the 2025 Ram 2500 come from 4 brands — INA, MELLING, MOPAR and 1 other brand.

Listed part numbers: INA ZS0122, MELLING S949 and MOPAR 53022317AC, plus the other parts above.

This table covers the Turbocharger Coolant lines. Typical signs include a wet fitting, a rusted pipe, or a pressure loss in this circuit. Flare or thread the new line the way the notes specify; a kinked replacement will fail early. Read more

This group shows a single part: SUNSONG 5804256.

This table covers the Valve covers. Read more

3 Valve Cover parts are listed for the 2025 Ram 2500, from MOPAR and DORMAN.

Part numbers include DORMAN 264495, MOPAR 68360667AB and MOPAR 53022085AD.

This table covers the gaskets that seal the valve cover to the cylinder head. 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

3 Valve Cover Gasket parts for the 2025 Ram 2500 come from 2 brands — FEL-PRO and ULTRA-POWER.

Listed part numbers: FEL-PRO VS50625R and FEL-PRO VS50625R1, plus the other parts above.

This table covers the pressed-in bronze and cast-iron guides that align valve stems. Typical signs include oil smoke on startup, a guide that has gone oval, or a valve that no longer seats quietly. Guides are a machine-shop fit. Confirm stem diameter in the notes before ordering. Read more

This group shows a single part: SBI 1403156.

This table covers the lifters / tappets that transfer cam motion to the valves. Read more

10 Valve Lifter parts for the 2025 Ram 2500 come from 3 brands — MOPAR, MELLING and SBI. The "Popular" part is MELLING JBK8522.