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3908815 | Cummins B-Series Piston

Pricing: $36.32

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When it comes to Pistons, why risk your engine?

Don?t let a small part turn into a major repair. We wouldn't risk putting sub-par parts into our engines, so why should you?

HHP only sells Pistons that are manufactured in a state of the art facility using top of the line machining and measuring equipment to ensure each part is manufactured to OEM specifications. Combine this with up to 50% off OEM prices, an industry leading 2-Year Parts and Labor Warranty and technical expertise from HHP?s certified staff, and you?ve got a quality Piston that will keep you running for another million miles.

Need a little extra proof? Let's talk shop.

  • Want exceptional quality and consistency of parts? HHP can help! This piston is manufactured and assembled in an ISO 9001:2008 certified facility ensuring you get the most for your money.
  • Quality is a high priority for us, that is why you'll get equal or better quality compared to the OE at a more affordable price. You can't beat that!
  • To top it off, this piston is built to strict OE specifications which will give you proper fit and function.


  • (1) Piston


2-Year Parts and Labor Warranty

OEM Applications:

  • 3908815
  • CUM3908815
  • 3802132

Technical Data

.50mm Bore
Fits Applications:
For Model 4B - 4 are Required
For Model 6B - 6 are Required


  • P022597
  • P022597
  • HHP
  • New

Shipping Information

  • Item Requires Shipping
  • 2.5 lbs.
  • W5.5000” x H5.5000” x L6.0000”

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