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INTERSTATE MCBEE

INTERSTATE MCBEE M-4089181 PISTON RING SET .020 OVERSIZE 03-07 5.9L CUMMINS (AFTERMARKET REPLACEMENT)

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SKU:
MCBM-4089181
MPN:
M-4089181
Shipping:
Calculated at Checkout
$34.09
724-785-4022

Description

Interstate-McBee M-4089181 Piston Ring Set (.020 / 0.50 mm) – 03–07 5.9L Cummins

OE-quality .020" (0.50 mm) oversize piston ring set engineered for 2003–2007 5.9L Cummins ISB (24-valve common-rail) engines. Ideal for overbore rebuilds, restoring compression and oil control with OEM-style materials and profiles.

  • Direct application: Built for 03–07 Dodge Ram 2500/3500 5.9L Cummins ISB.
  • .020" / 0.50 mm oversize: For properly bored/honed cylinders—verify bore size before install.
  • Engineered to OEM spec: Ring geometry and tension designed to maintain factory performance.
  • Aftermarket value: Interstate-McBee quality at a fraction of OEM boxed pricing.

Specifications

Interstate-McBee Part M-4089181
OEM Reference Cummins 4089181
Size .020" oversize (0.50 mm)
Application 5.9L Cummins ISB 24V (common-rail)
Years 2003–2007
What’s Included Ring pack for one piston (top compression, second compression, oil ring assembly)
Warranty Manufacturer coverage; typical Interstate-McBee new parts warranty up to 24 months from installation

Vehicle Fitment

Always confirm by engine serial number (ESN) for precise compatibility.

  • Dodge Ram 2500/3500 with 5.9L Cummins ISB (24V common-rail):
    • Model Years: 2003, 2004, 2005, 2006, 2007
  • Industrial: Select Cummins ISB/QSB 5.9 applications (verify by ESN)

Install Notes

  • Quantity: One set services one piston—order 6 sets for a complete engine.
  • Bore/Hone: Confirm cylinders are bored/honed to .020" over; measure ring end-gap per service manual.
  • Orientation: Observe top ring markings and stagger ring gaps as specified by Cummins.
  • Break-in: Use appropriate oil and follow manufacturer break-in procedure.

Related / Cross-References

  • Standard bore: Interstate-McBee M-4089258
  • .040" over (1.00 mm): Interstate-McBee M-4089182
  • OEM reference: Cummins 4089181

Why Buy From CPP Diesel

  • ESN-verified fitment support from diesel specialists
  • Fast shipping and easy returns
  • Curated 5.9/6.7 Cummins rebuild parts to complete your job

FAQ

Will these rings fit my 2003–2007 5.9L Cummins?
Yes—this set is listed for 2003–2007 Dodge Ram 5.9L Cummins ISB (24-valve common-rail). Always verify by ESN.
Is .020" the same as 0.50 mm?
Practically, yes. .020" equals 0.508 mm, commonly rounded and cataloged as 0.50 mm oversize.
How many sets do I need?
One ring set services one piston. For a complete 6-cylinder engine, order six sets.
Does this include pistons?
No—this listing is for the piston rings only. Pistons and pins are sold separately.
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