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INTERSTATE MCBEE

INTERSTATE-MCBEE M-3802423 PISTON RING SET .040 OVER 89-02 5.9L CUMMINS (AFTERMARKET REPLACEMENT)

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SKU:
MCBM-3802423
MPN:
M-3802423
Shipping:
Calculated at Checkout
$35.87

Description

Interstate-McBee M-3802423 Piston Ring Set (.040 Over) – 89–02 5.9L Cummins

OE-style .040" (1.00 mm) oversize piston ring set for Cummins B/ISB 5.9L engines. Ideal for overbore rebuilds on 1989–2002 Dodge Ram 2500/3500 5.9L Cummins. Sold per cylinder (order 6 sets for a complete engine). Always verify with your engine serial number (ESN) and piston spec.

  • Aftermarket replacement: Interstate-McBee quality engineered to OEM form, fit, and function.
  • .040" overbore: Sized for cylinders machined +1.00 mm; not for standard bores.
  • Per-piston kit: One ring pack per cylinder to simplify service and inventory.
  • Built for sealing & longevity: Correct materials and profiles to control blow-by and oil consumption.

Specifications

Brand / Part No. Interstate-McBee M-3802423
OEM Reference Cummins 3802423 (ring set); related refs 3802054, 3802234
Size .040" over (1.00 mm)
Composition Top ring (keystone) PN 3919051; 2nd ring PN 3904348; oil ring PN 3923891
Quantity One cylinder set (order 6 for full engine)
Engine Families Cummins B / ISB (4B/6B/5.9L)
Warranty Interstate-McBee new engine parts typically 24 months from installation

Vehicle Fitment

Fitment varies by piston design and ESN; confirm before ordering.

  • Dodge Ram 2500/3500 5.9L Cummins
    • 1989–1998 12-Valve 6BT
    • 1998.5–2002 24-Valve ISB (early)
  • Industrial/Commercial: 4B/6B applications where .040" overbore is specified (verify by ESN).

What’s Included

  • (1) Complete piston ring pack for a single 5.9L cylinder (.040"/1.00 mm over)

Installation Notes

  • These rings require a .040" (1.00 mm) overbore cylinder and matching .040" pistons.
  • Measure end-gaps in the cylinder and file-fit to Cummins service manual specifications.
  • Observe ring orientation; keystone top ring installs with the marked side up.
  • Use proper hone finish for ring material; clean bores thoroughly before assembly.

Why Buy From CPP Diesel

  • ESN-verified fitment help from real diesel techs
  • Fast shipping and easy returns
  • Deep catalog of B-series rebuild parts to finish the job

FAQ

Is this sold per cylinder or as a full engine set?
Sold per cylinder. You’ll need six sets for a complete 5.9L (6-cyl) engine.
Will it fit both 12-valve and 24-valve 5.9L engines?
Commonly used across 1989–2002 B-series applications (12V & early 24V). Verify by ESN and piston/ring spec for your build.
What does “.040 over” mean?
It indicates cylinders bored 0.040" (1.00 mm) larger than stock. Use with matching .040" pistons only.
Do I need special honing or file-fitting?
Yes. Follow the Cummins service manual for surface finish and ring end-gap. File-fit as required to spec.
What’s the warranty?
Interstate-McBee new engine parts typically carry a 24-month warranty from date of installation (usage limits and exclusions may apply).
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Additional Information

YEAR:
1989-2002
MAKE:
DODGE
ENGINE:
5.9L
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