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12V 5.9 Cummins (89-97) Parts

If you have a 12V Cummins engine in your Dodge truck, you’re already familiar with the power and performance it’s capable of delivering. But there’s always a way to get a little bit more from it, which is why Powerhouse Diesel offers a wide selection of 12V Cummins parts to help you fine-tune it and keep it in good health. Whether you’re looking for 12V Cummins upgrades or just what you need for routine maintenance, you can trust our vast range of products to provide you with exactly what you want. Take a look at our 12 valve Cummins performance parts here on this page, then let us know if you have any questions:

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    Schaeffer's 0132 Moly EP Oil Treatment

    Schaeffer's
    $11.74 - $367.25
    $11.74
    $11.74 - $367.25
    $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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    $11.74 - $367.25
    $11.74
    $11.74 - $367.25
    $11.74
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    Schaeffer's 02191 SynForce Green NLGI #1

    Schaeffer's
    $11.82 - $354.60
    $11.82
    $11.82 - $354.60
    $11.82

    0219 SynForce® Green Grease NLGI #1 is an extreme heavy-duty, multi-purpose, aluminum complex base grease. It is formulated for use in all types o...

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    $11.82 - $354.60
    $11.82
    $11.82 - $354.60
    $11.82
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    Schaeffer's 0137 Diesel Treat 2000™ Ultra Low Sulfur

    Schaeffer's
    $14.42 - $396.20
    $14.42
    $14.42 - $396.20
    $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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    $14.42 - $396.20
    $14.42
    $14.42 - $396.20
    $14.42
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    Schaeffer's 0137CTPACarbon Treat All Season

    Schaeffer's
    $27.65 - $27.65
    $27.65
    $27.65 - $27.65
    $27.65

    0137CTPA CarbonTreat is the cure for a problem you may not know exists. That said, you probably have heard of injector failures and plugged fuel f...

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    $27.65 - $27.65
    $27.65
    $27.65 - $27.65
    $27.65
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    Schaeffer's 0191 Micron Moly® Racing Oil 20W-50

    Schaeffer's
    $160.32 - $248.10
    $160.32
    $160.32 - $248.10
    $160.32

    0191 Micron Moly® Racing Oil 20W-50 is engineered with the highest quality 100% paraffin base stocks, proven friction modifiers, and a highly advan...

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    $160.32 - $248.10
    $160.32
    $160.32 - $248.10
    $160.32
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    Schaeffer's 9000 SynShield OTR Plus Full Synthetic 5W-40

    Schaeffer's
    $191.28 - $360.54
    $191.28
    $191.28 - $360.54
    $191.28

    9000 SynShield® OTR Plus 5W-40 Diesel Engine Oil is a premium advanced performance, fully synthetic, heavy-duty diesel engine oil formulated to pro...

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    $191.28 - $360.54
    $191.28
    $191.28 - $360.54
    $191.28
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    Schaeffer's 9012 SynShield OTR Plus Full Synthetic 10W-30

    Schaeffer's
    $297.10 - $360.54
    $297.10
    $297.10 - $360.54
    $297.10

    SynShield® OTR Plus 10W-30 Diesel Engine Oil is a premium advanced performance, fully synthetic, heavy-duty diesel engine oil formulated to provide...

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    $297.10 - $360.54
    $297.10
    $297.10 - $360.54
    $297.10
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    Schaeffer's 0137ULSW Diesel Treat 2000™ Winter Fuel Additive/Anti gel

    Schaeffer's
    $16.36 - $392.64
    $16.36
    $16.36 - $392.64
    $16.36

    0137ULSW Diesel Treat 2000™ Ultra Low Sulfur Winter fuel additive is specially formulated to provide ultra low sulfur diesel fuel maximum cold te...

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    $16.36 - $392.64
    $16.36
    $16.36 - $392.64
    $16.36
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    0700 SynShield™ Durability Advantage 15W-40

    Schaeffer's
    $170.64 - $316.08
    $170.64
    $170.64 - $316.08
    $170.64

    0700 SynShield® Durability Advantage 15W-40 Oil is a premium performance, synthetic plus, heavy-duty diesel engine oil formulated to provide maximu...

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    $170.64 - $316.08
    $170.64
    $170.64 - $316.08
    $170.64
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    Schaeffer's 0204SAT All-Trans Supreme ATF

    Schaeffer's
    $235.68 - $384.60
    $235.68
    $235.68 - $384.60
    $235.68

    0204SAT All-Trans Supreme® is formulated with a special blend of synthetic base oils, a highly shear, stable viscosity improver, and a multi-functi...

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    $235.68 - $384.60
    $235.68
    $235.68 - $384.60
    $235.68
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    Schaeffer's 0709 Supreme 7000™ Synthetic Plus Racing Oil 10W-30

    Schaeffer's
    $210.96 - $400.14
    $210.96
    $210.96 - $400.14
    $210.96

    0709 Supreme 7000™ Synthetic Plus Racing Oil 10W-30 is a premium quality, high zinc, multi-grade para-synthetic engine oil that is formulated to re...

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    $210.96 - $400.14
    $210.96
    $210.96 - $400.14
    $210.96
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    Schaeffer's 0723 SynShield® Ultra Performance 5W-30

    Schaeffer's
    $300.55 - $300.55
    $300.55
    $300.55 - $300.55
    $300.55

    0723 SynShield® Ultra Performance 5W-30 Diesel Engine Oil is a premium performance, full synthetic, heavy-duty diesel engine oil formulated to pro...

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    $300.55 - $300.55
    $300.55
    $300.55 - $300.55
    $300.55
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    0711-005 SynShield® OTR Plus 10W-30

    Schaeffer's
    $259.35 - $259.35
    $259.35
    $259.35 - $259.35
    $259.35

    0711 SynShield® OTR Plus 10W-30 Diesel Engine Oil is a premium performance, synthetic plus, heavy-duty diesel engine oil formulated to provide maxi...

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    $259.35 - $259.35
    $259.35
    $259.35 - $259.35
    $259.35
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    Schaeffer's 0300ULSW Arctic Shield + Ultra Low Sulfur

    Schaeffer's
    $12.30 - $295.20
    $12.30
    $12.30 - $295.20
    $12.30

    0300ULSW Arctic Shield™ + Ultra Low Sulfur is a highly concentrated, ashless, ultra low sulfur complaint diesel fuel additive for over-the-road tr...

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    $12.30 - $295.20
    $12.30
    $12.30 - $295.20
    $12.30
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    Schaeffer's 0708 Supreme™ 7000 Synthetic Plus Racing Oil 15W-40

    Schaeffer's
    $301.40 - $367.14
    $301.40
    $301.40 - $367.14
    $301.40

    0708 Supreme 7000™ Synthetic Plus™ Racing Oil 15W-40 is a premium quality, high zinc, multi-grade para-synthetic engine oil that is formulated to r...

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    $301.40 - $367.14
    $301.40
    $301.40 - $367.14
    $301.40
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    0722 SynShield® Ultra Performance 10W-30

    Schaeffer's
    $170.64 - $316.08
    $170.64
    $170.64 - $316.08
    $170.64

    0722 SynShield® Ultra Performance 10W-30 Diesel Engine Oil is a premium performance, synthetic plus, heavy-duty diesel engine oil formulated to pro...

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    $170.64 - $316.08
    $170.64
    $170.64 - $316.08
    $170.64

The Best 12V Cummins Performance Parts for Your Truck

When it comes to getting more out of your engine, having the right parts and products matter a lot. Fortunately, Powerhouse Diesel offers a huge inventory of offerings from many of the top names in the industry. From fuel filters and gaskets to transmissions and turbochargers, we’re your complete source for everything to boost what your engine is capable of delivering. We carry parts from leading brands including industrial injection, Smeding and fleece performance.

But it’s more than our extensive range of products that makes us the best place to shop. We understand that trying to sort through your options can be confusing at times, but our team of qualified experts has all the knowledge and expertise needed to help you narrow down your search. We can point you in the right direction and help you find the product that’s perfect for what you want. 

If you want to learn more about all the various 12V Cummins parts and accessories we have to offer, browse through our selection on this page or reach out to speak with an experienced member of our team today. 

Shop 12V Cummins Parts by Category

Browse parts for your 1989-1998 Dodge Ram 5.9L 12-valve Cummins by system below.

12V Cummins Fuel System & Injectors

Pump governor spring kits, delivery valves, fuel filters, and performance 
upgrades - plus 12V Cummins fuel injectors for stock replacement and 
high-power builds. Shop all 12V Cummins fuel system parts.

12V Cummins Engine Internals

Rod bearings, head studs, valve cover gaskets, and rebuild components 
from trusted suppliers. Browse 12V Cummins engine parts.

12V Cummins Intake & Cooling

Cold-air intakes, coolant filters, and intercooler upgrades to lower 
intake temps and protect your cooling system. Browse 12V Cummins 
intakes and cooling.

12V Cummins Transmissions

Rebuild kits, shift kits, and short tailshaft options for the NV4500 
and Getrag transmissions. Browse 12V Cummins transmissions.

12V Cummins Tuning

Tuning options for the 12-valve - from P-pump mechanical modifications 
to electronic tuning accessories. Browse 12V Cummins tuning.

12V Cummins Performance Packages

Bundled upgrade kits for specific horsepower targets - from daily 
driving to competition pulling. Browse 12V Cummins performance packages.

 

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.

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