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12V 5.9 Cummins (1989 to 1997) Parts

Parts for the 12V 5.9 Cummins (1989 to 1998).

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  • 45 Degree Stainless Exhaust Tip with Clamp | 4 or 5 Inch Inlet, 5 to 8 Inch Outlet

    Powerhouse Diesel
    Original price $120.00 - Original price $210.00
    Original price
    $120.00
    $120.00 - $210.00
    Current price $120.00

    Stainless Steel Elbow Exhaust Tip Fits 4" & 5" Exhaust Systems | Multiple Outlet Sizes Available Finish your exhaust setup the right way. These...

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    Original price $120.00 - Original price $210.00
    Original price
    $120.00
    $120.00 - $210.00
    Current price $120.00
  • Schaeffer's 0132 Moly EP Oil Treatment

    Schaeffer's
    Original price $11.74 - Original price $367.25
    Original price
    $11.74
    $11.74 - $367.25
    Current price $11.74

    0132 Extreme pressure protection for bearings, valve trains, pistons and piston rings. Increases oil pressure and reduces oil consumption. Mo...

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    Original price $11.74 - Original price $367.25
    Original price
    $11.74
    $11.74 - $367.25
    Current price $11.74
  • KC Boost Leak Detector | Powerstroke and Cummins

    Kc Turbo
    Original price $90.00 - Original price $109.00
    Original price
    $90.00
    $90.00 - $109.00
    Current price $90.00

    Find boost leaks fast. The KC boost leak detector has a billet connector, pressure gauge and shut off valve, with 4, 3.5 or 3 inch boot connectors....

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    Original price $90.00 - Original price $109.00
    Original price
    $90.00
    $90.00 - $109.00
    Current price $90.00
  • Pusher Front Mount Cold Air Intake System for 1991-1993 Intercooled Dodge Cummins

    Pusher Intakes
    Original price $239.99 - Original price $239.99
    Original price
    $239.99
    $239.99 - $239.99
    Current price $239.99

    Pusher Intakes Model PDC9193CAI This product is not emissions compliant. Off-road use only. Pusher Front Mount Cold Air Intake System for 1991-1993...

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    Original price $239.99 - Original price $239.99
    Original price
    $239.99
    $239.99 - $239.99
    Current price $239.99
  • Pro Form Fab 94-99 Ram 2500/3500 Control Arms

    Pro Form Fab
    Original price $0.00 - Original price $470.00
    Original price $0.00
    $335.00
    $335.00 - $470.00
    Current price $335.00

      We are please to bring you are heavy duty tubular control arms for: 1994-1999 Dodge 2500/3500 Product Description: These is a complet...

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    Original price $0.00 - Original price $470.00
    Original price $0.00
    $335.00
    $335.00 - $470.00
    Current price $335.00
  • Pro Form Fab 94-02 Second Gen Dodge Ram 2500/3500 Traction Bars

    Pro Form Fab
    Original price $0.00 - Original price $850.00
    Original price $0.00
    $550.00
    $550.00 - $850.00
    Current price $550.00

    Heavy duty ladder style traction bars for the 1994 to 2002 second gen Dodge Ram 2500 and 3500. They are sized as close to driveshaft length as poss...

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    Original price $0.00 - Original price $850.00
    Original price $0.00
    $550.00
    $550.00 - $850.00
    Current price $550.00
  • Schaeffer's 02191 SynForce Green NLGI #1

    Schaeffer's
    Original price $11.82 - Original price $354.60
    Original price
    $11.82
    $11.82 - $354.60
    Current price $11.82

    Schaeffer's SynForce Green NLGI #1 is an extreme heavy duty aluminum complex grease for trucks and equipment that work under load.Questions on fitm...

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    Original price $11.82 - Original price $354.60
    Original price
    $11.82
    $11.82 - $354.60
    Current price $11.82
  • Schaeffer's 0137 Diesel Treat 2000™ Ultra Low Sulfur

    Schaeffer's
    Original price $14.42 - Original price $396.20
    Original price
    $14.42
    $14.42 - $396.20
    Current price $14.42

    0137 Diesel Treat 2000™ Ultra Low Sulfur is an ashless, all-season fuel additive formulated for use with all types of diesel fuel, especially low s...

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    Original price $14.42 - Original price $396.20
    Original price
    $14.42
    $14.42 - $396.20
    Current price $14.42
  • Edge 84130-3 Insight CTS3 Digital Gauge Monitor

    Edge
    Original price $549.95 - Original price $549.95
    Original price
    $549.95
    $549.95 - $549.95
    Current price $549.95

    Edge Model 84130-3Give your vehicle the most advanced digital monitoring system when you install the Edge 84130-3 Insight CTS3 Digital Gauge Monito...

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    Original price $549.95 - Original price $549.95
    Original price
    $549.95
    $549.95 - $549.95
    Current price $549.95
  • Pusher Front Mount Cold Air Intake System for 1989-1991 Dodge Cummins

    Pusher Intakes
    Original price $239.99 - Original price $239.99
    Original price
    $239.99
    $239.99 - $239.99
    Current price $239.99

    Pusher Intakes Model PDC8991CAI This product is not emissions compliant. Off-road use only. Pusher Front Mount Cold Air Intake System for 1989-1991...

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    Original price $239.99 - Original price $239.99
    Original price
    $239.99
    $239.99 - $239.99
    Current price $239.99
  • Wehrli 98-18 Dodge / Ram Cummins 5.9L/6.7L WCFab X Fleece Thermostat Housing

    Wehrli
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $179.45
    $179.45 - $179.45
    Current price $179.45

    Wehrli Model WCF100157WCFab X Fleece Performance Engineering Thermostat Housing for 1998.5-2018 5.9L & 6.7L Cummins is a direct replacement upg...

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    Original price $0.00 - Original price $0.00
    Original price $0.00
    $179.45
    $179.45 - $179.45
    Current price $179.45
  • Pro Form Fab 94-99 Ram 2500/3500 Long Arm Upgrade

    Pro Form Fab
    Original price $0.00 - Original price $950.00
    Original price $0.00
    $750.00
    $750.00 - $950.00
    Current price $750.00

    We are pleased to bring you our top of the line tubular design for: 1994-1999 Dodge 2500/3500 Long Arm Upgrade Product Description: We are pr...

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    Original price $0.00 - Original price $950.00
    Original price $0.00
    $750.00
    $750.00 - $950.00
    Current price $750.00
  • Tombstone AN Drain Locks for 94-23 Cummins

    Tombstone Diesel
    Original price $74.99 - Original price $74.99
    Original price
    $74.99
    $74.99 - $74.99
    Current price $74.99

    Tombstone AN Drain Locks for 94-23 Cummins The Tombstone Diesel Turbocharger AN Drain Lock is constructed of stainless steel and hardened fasteners...

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    Original price $74.99 - Original price $74.99
    Original price
    $74.99
    $74.99 - $74.99
    Current price $74.99
  • Pusher Pre and Post Intercooler Intake System for 1991.5-1993 Dodge Cummins 12V

    Pusher Intakes
    Original price $479.99 - Original price $479.99
    Original price
    $479.99
    $479.99 - $479.99
    Current price $479.99

    Pusher Intakes Model PDC9193KW This product is not emissions compliant. Off-road use only. Pusher pre and post intercooler intake system for Cummin...

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    Original price $479.99 - Original price $479.99
    Original price
    $479.99
    $479.99 - $479.99
    Current price $479.99
  • XDP Cummins Bolt-on Side Freeze Plug XD334

    XDP
    Original price $39.95 - Original price $39.95
    Original price
    $39.95
    $39.95 - $39.95
    Current price $39.95

    XDP Model XD334Make sure your side freeze plugs stay firmly mounted in your 1989-2018 Dodge 5.9L & 6.7L Cummins with the XDP Cummins Bolt-On Si...

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    Original price $39.95 - Original price $39.95
    Original price
    $39.95
    $39.95 - $39.95
    Current price $39.95
  • Pusher Heater Grid Delete for 1989-2007 Dodge Cummins 5.9L

    Pusher Intakes
    Original price $75.99 - Original price $75.99
    Original price
    $75.99
    $75.99 - $75.99
    Current price $75.99

    Pusher Intakes Model PDC8907HGDThis product is not emissions compliant. Off-road use only. Pusher Aluminum Grid Heater Delete for Cummins 5.9L turb...

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    Original price $75.99 - Original price $75.99
    Original price
    $75.99
    $75.99 - $75.99
    Current price $75.99
  • Redhead Steering Gear 2869-3T | 1994 to 2002 Dodge Ram Trucks

    Redhead
    Original price $396.00 - Original price $396.00
    Original price
    $396.00
    $396.00 - $396.00
    Current price $396.00

    Redhead Model 2869-3T (3-3.5 Turns) Part Number Fits: 1994-2001 Dodge 1500 or 1994-2002 2500-3500 Dodge Pickup TrucksPlease Note: This Steering Gea...

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    Original price $396.00 - Original price $396.00
    Original price
    $396.00
    $396.00 - $396.00
    Current price $396.00
  • Pro Form Fab 1994-2002 2nd Gen Dodge 2500\3500 Rear Lift Blocks

    Pro Form Fab
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $119.95
    $119.95 - $174.95
    Current price $119.95

    1994-2002 2nd Gen Dodge 2500/3500 Product Description: We are proud to bring you our Heavy Duty fabricated rear lift blocks. These CNC cut, j...

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    Original price $0.00 - Original price $0.00
    Original price $0.00
    $119.95
    $119.95 - $174.95
    Current price $119.95
  • Schaeffer's 0137CTPA Carbon Treat All Season

    Schaeffer's
    Original price $27.65 - Original price $27.65
    Original price
    $27.65
    $27.65 - $27.65
    Current price $27.65

    Schaeffer's 0137CTPA Carbon Treat All Season. Sold and shipped by Powerhouse Diesel, a diesel repair and performance shop in Knoxville, TN.Question...

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    Original price $27.65 - Original price $27.65
    Original price
    $27.65
    $27.65 - $27.65
    Current price $27.65
  • Wehrli Cummins High Mount 2nd Gen Turbo Swap Oil Line Kit

    Wehrli
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $257.05
    $257.05 - $257.05
    Current price $257.05

    Wehrli Model WCF100279Wehrli Cummins High Mount 2nd Gen Turbo Swap Oil Line Kit - For use with S300 or S400 Style Turbos Mounted in the High Mount ...

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    Original price $0.00 - Original price $0.00
    Original price $0.00
    $257.05
    $257.05 - $257.05
    Current price $257.05
  • Rough Country 2 to 1 OBDII Connector

    Rough Country
    Original price $19.95 - Original price $19.95
    Original price
    $19.95
    $19.95 - $19.95
    Current price $19.95

    Rough Country 2 to 1 OBDII Connector. Sold and shipped by Powerhouse Diesel, a diesel repair and performance shop in Knoxville, TN. Part number: P...

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    Original price $19.95 - Original price $19.95
    Original price
    $19.95
    $19.95 - $19.95
    Current price $19.95
  • S400 90* Elbow, Clamp and Oring

    Smeding
    Original price $98.00 - Original price $98.00
    Original price
    $98.00
    $98.00 - $98.00
    Current price $98.00

    Aluminum S400 90 degree elbow and Clamp for the S400 V band style compressor cover. Also known as the S400 transfer elbow 3 inch hose outlet Also...

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    Original price $98.00 - Original price $98.00
    Original price
    $98.00
    $98.00 - $98.00
    Current price $98.00
  • XDP Tow Series Flex Plate 1994-2007 Dodge 5.9L Diesel 47RH/47RE/48RE

    XDP
    Original price $187.95 - Original price $187.95
    Original price
    $187.95
    $187.95 - $187.95
    Current price $187.95

    XDP Tow Series Flex Plate 1994 to 2007 Dodge 5.9L Diesel 47RH/47RE/48RE. Sold and shipped by Powerhouse Diesel, a diesel repair and performance sho...

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    Original price $187.95 - Original price $187.95
    Original price
    $187.95
    $187.95 - $187.95
    Current price $187.95
  • Schaeffer's 0191 Micron Moly Racing Oil 20W-50

    Schaeffer's
    Original price $160.32 - Original price $248.10
    Original price
    $160.32
    $160.32 - $248.10
    Current price $160.32

    Schaeffer's 0191 Micron Moly Racing Oil 20W-50. Sold and shipped by Powerhouse Diesel, a diesel repair and performance shop in Knoxville, TN.Questi...

    View full details
    Original price $160.32 - Original price $248.10
    Original price
    $160.32
    $160.32 - $248.10
    Current price $160.32

The 12 valve 5.9L Cummins ran from 1989 to 1998 and is known for its mechanical injection pump, which makes it simple to work on and a favorite for big power builds.

Shop 12V 5.9 Cummins Parts by Category

Not sure what fits? Send us your VIN or call 865.640.2097 and we will match the right part.

12V Cummins FAQ

What makes the 12V Cummins popular for modifications?

Its fully mechanical P7100 injection pump, which is simple to modify without any electronics.

What is a fuel plate or governor spring kit?

Common upgrades to the mechanical pump that increase fuel delivery for more power.

12V Cummins FAQs

  • The 12-valve 5.9L Cummins was produced from 1989 through 1998 in Dodge Ram 2500 and 3500 trucks. The 1994-1998 trucks used the P7100 injection pump and are the most sought-after for performance builds.

  • The 12-valve (1989-1998) uses a mechanical injection pump; the 24-valve (1998.5-2002) uses a VP44 electronic pump. The 12-valve is preferred for high-power builds because pump modifications require no tuning software. Have a 1998.5+ truck? Shop our 24V Cummins parts.

  • The P-pump governor spring kit is the cheapest and most impactful first modification. Pair it with matched injectors and a cold-air intake for strong results without opening the engine.

  • The most common issues are worn injection pump delivery valves (hard starts), cracked fuel return lines, worn cam position sensors (1994+), and head gasket failure on high-boost builds. All are well-supported by the aftermarket.

  • A well-maintained 12-valve 5.9L routinely reaches 400,000-500,000 miles. Trucks with 600,000+ miles on the original block are documented. Key factors: regular oil changes, clean fuel, and maintaining the injection pump fuel supply.