NEW YEARS SALE - FLAT 15 % OFF ON EVERY PART

  • 1st Generation

  • 12 Valve 1989-1993
  • 2nd Generation

  • 12 Valve 1994-1998
  • 2nd Generation

  • 24 Valve 1998.5 - 2002
  • 3rd Generation

  • 24 Valve 2003-2009

1st Generation

12 Valve 1989-1993 Shop Now

2nd Generation

12 Valve 1994-1998 Shop Now

2nd Generation

24 Valve 1998.5 - 2002 Shop Now

3rd Generation

24 Valve 2003-2009 Shop Now

Best selling parts

  • Cummins 3916691 60lb Valve Springs Set of 12
    Cummins 3916691 60lb Valve Springs Set of 12
    Regular price
    $99.00
    Sale price
    $99.00
    Regular price
    $102.35
    Unit price
    per 
    Sold out
  • Cummins ABFJV 4988747 Lift Pump
    Cummins ABFJV 4988747 Lift Pump
    Regular price
    $119.00
    Sale price
    $119.00
    Regular price
    $113.85
    Unit price
    per 
    Sold out
  • Cummins 3914284 Spacer with Gasket & Studs. (89-98 12V)
    Cummins 3914284 Spacer with Gasket & Studs
    Regular price
    $19.00
    Sale price
    $19.00
    Regular price
    $21.85
    Unit price
    per 
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  • Cummins Genuine Part 3914753 Fuel Supply Tube
    Cummins Genuine Part 3914753 Fuel Supply Tube
    Regular price
    $25.00
    Sale price
    $25.00
    Regular price
    $25.30
    Unit price
    per 
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  • Dodge Cummins Military Battery Terminals, Lugs & Boots Set
    Regular price
    $49.00
    Sale price
    $49.00
    Regular price
    Unit price
    per 
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  • Poor Man’s Diesel KDP Repair Tab
    Poor Man’s Diesel Genuine Cummins KDP Repair Tab
    Regular price
    $17.00
    Sale price
    $17.00
    Regular price
    $19.55
    Unit price
    per 
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  • Genuine Cummins 4939587 Oil Pump
    Genuine Cummins 4939587 Oil Pump
    Regular price
    $119.00
    Sale price
    $119.00
    Regular price
    $136.85
    Unit price
    per 
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  • Cummins/DCEC 4988747 Lift Pump
    Cummins/DCEC 4988747 Lift Pump
    Regular price
    $69.00
    Sale price
    $69.00
    Regular price
    $79.35
    Unit price
    per 
    Sold out
  • Dodge 5.9 Genuine Cummins 3934486 Rear Main Seal w / install ring
    Regular price
    $59.00
    Sale price
    $59.00
    Regular price
    $53.90
    Unit price
    per 
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  • Genuine Cummins 3912254 Belt Tensioner
    Genuine Cummins 3912254 Belt Tensioner
    Regular price
    $99.00
    Sale price
    $99.00
    Regular price
    $113.85
    Unit price
    per 
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Our Story

Best Cummins Genuine Parts by Poor Mans Diesel

Revelation

When Dodge first announced that a Cummins MEDIUM DUTY TRUCK engine was going to be available in their 3/4 and 1 ton pickups, our owner and founder knew what brand he would be using from then on. Compared to the Ford 6.9L and Chevy/GMC 5.7L & 6.2L he had owned previously the 5.9 Cummins was true diesel heaven. Remember the Dodge ads that showed the
Cummins connecting rods laying next to the Fords? That picture was worth more than a 1000 words.

Cummins 12 Valve Truck Fleet Owned By Poor Mans Diesel

Contemplation

As his fleet grew his appreciation for the Million Mile Motor only increased. Power, Good Fuel Mileage AND Reliability? A true trifecta. His love dimmed a little with the introduction of the 24V in late 98. Yup, he was a true dinosaur. By then he was using a mix of 75% waste oil and 25% diesel fuel to power his trucks and the Bosch VP44 just did not stand up to the waste oil or even long term diesel use like his beloved
P-Pump.  So he stopped buying new and just accumulated 98 12 valves in all of the configurations necessary for his personal and business use.

Inception of Poor Mans Diesel and Logo

Inception

Stuck in that time warp he needed a reliable and economical source for maintenance and repair parts. Thus Poor Man's Diesel was born, mainly to source parts for his growing fleet of pickups and his buddies 12 valves
as well. He felt a few parts sold on eBay might provide enough profit to pay for the parts he needed for himself. He was right! But the demand
kept growing.So poormansdiesel.com was launched and now ALL 12 valve owners have access to Genuine Cummins parts at the best prices available.

What our customers have to say about us!

Good price for good product

John McTrevor

Great experience...very fast delivery!

Haris Shahzad

Wonderful! Hope To Deal With You Again

Michael Lellon

12 Valve Library