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3802758 | Cummins 4B/6B .50mm Piston Kit

P022046, CUM3802758, 3802758, Cummins, 4B, 6B, Cummins .50mm Piston Kit, Pistons, Piston Kit, Piston Kits, Cummins Piston Kits, Piston Kit Cummins, Cummins 4B, Cummins 6B, Cummins 4B/6B, Cummins 4B/6B .50mm Piston Kit, .50mm, .50mm Pistons, .50mm Piston Kit, .50mm Cummins Kit, .50mm Cummins 4B Piston Kit, Cummins .50mm 6B Piston Kit

Pricing: $78.56

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Think you know the truth about Piston Kits? We'd bet you'd be surprised.

It?s no secret, rebuilding your rig is one of the most labor (and wallet) intensive repairs out there. Sure, you want your engine to last another million miles but you also want the best price; so what should you choose- OEM or Aftermarket?

When it comes to engine parts, the aftermarket often gets a bad rep. The idea that aftermarket retailers sell cheap parts with zero warranty, delivered in a beat-up box written in another language couldn?t be further from the truth. HHP is here to set the record straight; we only sell new Piston Kits. On top of only offering premium quality parts, we also make sure you save up to 50% off OEM prices. So, when it comes to your Piston Kit, what?s left to want?

Need a little extra proof? Let?s talk Piston Kits.

  • With HHP you'll get a much lower price compared to the OEM and don't have to sacrifice quality. It doesn't get better than that!
  • Plus, each piston kit is built to OEM specifications, meaning you can rest easy knowing the internal components will fit your engine just right.
  • To top it off, each kit is made with excellent quality because it's manufactured and assembled in an ISO 9001: 2008 certified facility.
  • Simply put, replace your worn out parts with a brand new piston kit to maximize your engine. HHP's ASE certified techs have you covered!


  • (1) Piston Kit
    • (1) .50mm Engine Piston
    • (1) Piston Pin
    • (1) .50mm Piston Ring Set
      • (1) Oil Piston Ring
      • (1) Compression Piston Ring
      • (1) Compression Piston Ring
    • (2) Piston Pin Retainers


2-Year Parts and Labor Warranty

OEM Applications:

  • 3802758
  • CUM3802758

Technical Data

.5mm Bore
For Model 4B - 4 are Required
For Model 6B - 6 are Required

Cummins B-Series Engine Specifications:
Year: 1983-1998
Liter: 3.9
CID: 239
Cylinders: L 4
Bore/Stroke: 4.0157-4.0173"/4.724"
Compression Ratio: 16.3:1 Ratio
Firing Order: 1-3-4-2
Comments: B Series Diesel

Tune-Up Specifications:
Oil Pressure at Idle: 30 PSI at 1300 RPM
Oil Pressure: -
Intake Valve Lash: .010" Cold
Exhaust Valve Lash: .025" Cold


  • P022046
  • P022046
  • HHP
  • New

Shipping Information

  • Item Requires Shipping
  • 3.0 lbs.
  • W5.3800” x H9.0000” x L6.0000”

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