ENGINE PARTS
ENGINE PARTS & ACCESSORIES — 1994–1998 DODGE RAM 5.9L CUMMINS (12-VALVE, P7100)
CPP Diesel stocks the critical internal and top-end parts your Second-Gen needs: gasket sets, head studs/bolts, camshafts, valve springs, pushrods, tappets, timing gear case parts, KDP fixes, sensors, cylinder heads, rebuild kits and more—curated specifically for 1994–1998 5.9L Cummins 12-valve (P7100). Shop proven components from ARP, Mahle, Cummins OEM, Hamilton Cams, Interstate-McBee, and CPP Diesel.
Shop by Subcategory
- Gaskets & Seals — upper/lower sets, front/rear main, timing cover: Gaskets & Seals (94–98), Mahle HS4068 Upper Set, Mahle CS4068 Lower Set, Timing Cover Seal, Rear Main Seal Kit.
- Studs / Bolts — head, main, rod, hardware: STUDS/BOLTS (94–98 Hub), ARP 247-4205 Head Studs.
- Camshafts & Retainers — Camshafts (94–98), Hamilton 188/220 Combo, Cummins OEM Cam.
- Valve Train — springs, pushrods, tappets: Valve Springs, Pushrods, Tappets & Tappet Cover.
- Cylinder Heads & Components — CPP Loaded 12V Head.
- Timing Gear Case & KDP Fix — Timing Gear Case Parts, CPP KDP Repair Kit.
- Sensors & Small Parts — Coolant Temp Sensor (3920363), Throttle Position Sensor (3930318), P7100 Timing Case O-ring (3969698).
- Oil System & Coolers — Oil Cooler & Housing Parts, Oil Pan Kit (4089093).
- Rebuild & Crate Engines — 12V Complete Rebuild Kit, Crate/Long-Block Engines.
Featured 94–98 Picks
- ARP 247-4205 Head Studs — proven clamping for boosted 12V builds.
- Hamilton 188/220 Cam Combo — street/tow favorite with lower EGT.
- Mahle HS4068 Upper Set & CS4068 Lower Set — complete reseal packages.
- CPP KDP Repair Kit — must-do timing case insurance.
- CPP 12V Complete Rebuild Kit — pistons/rings/bearings/gaskets for a fresh long-life bottom/top end.
Why Buy from CPP Diesel
- Second-Gen Focus: Parts vetted on 1994–1998 P7100 trucks for fit, durability and real gains.
- Top Brands: ARP, Cummins OEM, Mahle, Hamilton Cams, Interstate-McBee, CPP Diesel.
- Expert Support: Head gasket thickness, valve lash, spring pressures, and cam choice for your goals.
- Fast Shipping: Popular 12-valve components ship quickly from U.S. warehouses.
Explore the full 1994–1998 Cummins catalog and pair engine work with cooling upgrades and gauges to keep temps in check.
Helpful Notes
- Head gasket thickness: Most reseals use standard thickness; thicker options (.010) help with decked heads—verify piston protrusion and compression goals.
- Studs vs. bolts: Studs improve clamping on tuned/towed trucks; always follow lube and torque specs, then re-check after heat cycles.
- Cam & springs: Bigger cams often require stiffer springs; choose spring rate for your boost/RPM targets and set lash after final torque.
- KDP fix: Locking the dowel pin during timing cover service is cheap insurance on any 12V.
- Seals & O-rings: P7100 timing case and pump seals get brittle—replace during front cover/KDP work.
Frequently Asked Questions
Do I need head studs on a stock-turbo 12-valve?
For mild tuning and towing, ARP studs are smart insurance. Stock bolts can work at factory power, but studs provide better long-term clamping.
Which cam works best for a tow/daily truck?
The Hamilton 188/220 is a proven all-around grind that improves spool, torque, and EGT control without hurting drivability.
What valve springs should I run?
Pick seat pressure for your boost/RPM. See our Valve Springs section for options that pair with common turbo/cam setups.
Is the Killer Dowel Pin (KDP) really an issue on 12V engines?
Yes—securing it during timing cover service prevents catastrophic gear damage. Use the CPP KDP Kit.
Which gasket sets do I need for a top-end reseal?
Use Mahle HS4068 (upper) with the proper head gasket, and add the CS4068 (lower) for pan/rear main/timing cover items.
I have a front cover/P-pump oil leak—what should I replace?
Inspect the timing cover seal and the P7100 timing case O-ring (3969698); replace both while the cover is off.
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ACCESSORY COVER PLATES
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ALIGNMENT DOWELS
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ALTERNATORS
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BARRING TOOLS
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BLOCK HEATERS
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CAMSHAFTS
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CATCH CANS AND BREATHERS
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CRANKSHAFTS
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CRATE ENGINES
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CYLINDER HEADS
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DIPSTICKS
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ENGINE DRESS UP
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EXHAUST MANIFOLDS
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EXTERNAL ENGINE PARTS
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FREEZE PLUGS
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GASKETS AND SEALS
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GIRDLES AND BLOCK STIFFENERS
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HARMONIC DAMPER
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KILLER DOWEL PIN REPAIR
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MAIN BEARINGS
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OIL COOLER
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OIL FILTERS
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OIL PANS
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OIL PUMPS
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OIL SQUIRTERS
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PISTONS / RINGS
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PUMP GEARS
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PUSHRODS
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REBUILD KITS
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RODS
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ROD BEARINGS
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ROCKER ARMS
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SENSORS
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STARTERS
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STUDS / BOLTS
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TAPPETS
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THERMOSTAT
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TIMING GEAR CASE
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VACUUM PUMPS
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VALVES
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VALVE COVERS
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VALVE SPRINGS / RETAINERS
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WATER PUMPS
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CUMMINS 3930906 | GENUINE VALVE COVER GASKET | FITS 1989-1998 DODGE RAM 5.9L CUMMINS
CUMMINS
$15.24Cummins 3930906 GENUINE VALVE COVER GASKET | OEM Replacement for Dodge Ram 5.9L & 6.7L Cummins (1989-1998) Genuine Cummins Part #3930906 The Cummins 3930906 GENUINE VALVE COVER GASKET is a factory OEM replacement part designed for Dodge Ram Cummins...$15.24 -
CUMMINS 3927305 | GENUINE THERMOSTAT HOUSING COVER | FITS 1994-1998 DODGE RAM 5.9L CUMMINS
CUMMINS
$14.95Cummins 3927305 GENUINE THERMOSTAT HOUSING COVER | OEM Replacement for Dodge Ram 5.9L & 6.7L Cummins (1989-2024) Genuine Cummins Part #3927305 The Cummins 3927305 GENUINE THERMOSTAT HOUSING COVER is a factory OEM replacement part designed for Dodge Ram...$14.95 -
MAHLE 4068C CYLINDER HEAD GASKET FOR 89-98 CUMMINS 5.9
MAHLE
$62.63The MAHLE 4068C is a composite cylinder head gasket designed for 1989-1998 Dodge Cummins 5.9L engines. It's known for its OEM fit and function, standard thickness (.061" or 1.55mm), and the use of a VR2000 composite material. This...$62.63 -
MAHLE MS10141 EXHAUST MANIFOLD GASKET SET FOR 89-98 CUMMINS 5.9
MAHLE
$8.96The MAHLE MS10141 is an exhaust manifold gasket set designed for 1989-1998 5.9L Cummins 12V engines. It's a high-quality product from a trusted brand known for sealing products. The set includes gaskets made of beaded...$8.96 -
CUMMINS 3934373 | GENUINE 180 DEGREE THERMOSTAT | FITS 1994-1998 DODGE RAM 5.9L CUMMINS
CUMMINS
$81.47Cummins 3934373 GENUINE 180 DEGREE THERMOSTAT | OEM Replacement for Dodge Ram 5.9L & 6.7L Cummins (1989-2002) Genuine Cummins Part #3934373 The Cummins 3934373 GENUINE 180 DEGREE THERMOSTAT is a factory OEM replacement part designed for Dodge Ram...$81.47 -
CPP LONG BLOCK 5.9 CUMMINS ENGINE 89-98
CPP DIESEL
$4,495.005.9 Cummins Premium Reman Long Block The CPP Diesel Long Block Crate Engine 1989-1998 Cummins 5.9L 12V is the ultimate choice for those seeking unmatched performance and durability. With exceptional features and precise design, this 12 valve Cummins...$4,495.00 -
CPP DIESEL 12V COMPLETE REBUILD KIT FOR 1989-1998 CUMMINS 5.9L ENGINE
CPP DIESEL
$1,079.83Elevate the performance and reliability of your 89-98 5.9L Cummins engine with our CPP Diesel 12V Cummins Engine Rebuild Kit designed specifically for the 1989-1998 Dodge Cummins 5.9L 12V engine. This comprehensive kit is expertly crafted with precision...$1,079.83 -
CUMMINS 4089742 | GENUINE VACUUM PUMP RESEAL KIT | FITS 1994-2002 DODGE RAM 5.9L CUMMINS
CUMMINS
$31.49Cummins 4089742 GENUINE VACUUM PUMP RESEAL KIT | OEM Replacement for Dodge Ram 5.9L & 6.7L Cummins (1989-2002) Genuine Cummins Part #4089742 The Cummins 4089742 GENUINE VACUUM PUMP RESEAL is a factory OEM replacement part designed for Dodge Ram...$31.49 -
CUMMINS 3931623 | GENUINE VALVE TAPPET OEM | FITS 1989-1998 DODGE RAM 5.9L CUMMINS
CUMMINS
$37.66Cummins 3931623 GENUINE VALVE TAPPET OEM | OEM Replacement for Dodge Ram 5.9L & 6.7L Cummins (1989-2024) Genuine Cummins Part #3931623 The Cummins 3931623 GENUINE VALVE TAPPET OEM is a factory OEM replacement part designed for Dodge Ram Cummins trucks...$37.66 -
CPP DIESEL REMAN OEM CYLINDER HEAD FOR 1989-1998 CUMMINS 5.9L 12V ENGINE
CPP DIESEL
$1,650.00Our CPP Diesel 12v Remanufactured OEM Cylinder head is meticulously engineered to provide reliability and durability. We start with an OEM Genuine Cummins casting to ensure optimal performance and longevity. Features Each cylinder...$1,650.00 -
MAHLE CB-1413P ROD BEARING; STD SIZE FOR 89-02 CUMMINS 5.9
MAHLE
$11.30The MAHLE CB-1413P is a connecting rod bearing, specifically designed for 1989-2002 Cummins 5.9L engines. It's a P-Series bearing, known for its durability and suitability for high-performance applications like motorsports or street performance...$11.30 -
MAHLE OS32139 ENGINE OIL PAN GASKET FOR 89-02 CUMMINS 5.9
MAHLE
$26.49The MAHLE OS32139 is an oil pan gasket set designed for specific Dodge 5.9L Cummins diesel engines, specifically those from 1989 to 2002. It's a comprehensive kit containing all necessary components for sealing the oil pan, including gaskets and...$26.49 -
MAHLE JV5072 ENGINE TIMING COVER GASKET SET FOR 94-98 CUMMINS 5.9
MAHLE
$49.17The MAHLE JV5072 is an engine timing cover gasket set designed for 1994-1998 Dodge 5.9L Diesel (12V Cummins) engines. It provides a reliable seal to prevent leaks and maintain engine integrity. The set includes the timing cover seal and...$49.17 -
CUMMINS 3957544 | GENUINE ENGINE OIL COOLER | FITS 1989-2002 DODGE RAM 5.9L CUMMINS
CUMMINS
$376.71Cummins 3957544 GENUINE ENGINE OIL COOLER | OEM Replacement for Dodge Ram 5.9L & 6.7L Cummins (1989-2022) Genuine Cummins Part #3957544 The Cummins 3957544 GENUINE ENGINE OIL COOLER is a factory OEM replacement part designed for Dodge Ram Cummins trucks...$376.71