Interstate-McBee M-3802134 Piston Kit .040 (1.00mm) – Marine Bowl – 1989–1998 5.9L Cummins 12V

OEM-style marine-bowl piston kit from Interstate-McBee for 1989–1998 Dodge Ram 2500/3500 5.9L Cummins (12-Valve 6BT). This .040" oversize (1.00 mm) kit is ideal for overbore rebuilds where a larger combustion bowl is desired for durability-focused and performance-minded builds. Engineered for precise fit, consistent sealing, and long service life.

• .040" / 1.00 mm oversize: For cylinders bored/honed to service limit.
• Marine-style large bowl: Popular for marine and performance truck applications.
• Complete piston kit: Includes piston, wrist pin, pin retainers, and ring set.
• OEM-equivalent quality: Interstate-McBee manufacturing for dependable results.

Specifications

Vehicle Fitment

Always verify by engine serial number (ESN) for exact compatibility.

• Dodge Ram 2500/3500 – 5.9L Cummins 12-Valve (6BT)
  • Model Years: 1989–1998
• Additional Applications: Select Cummins 4B/6B industrial, marine, and off-highway engines using 3802134-spec pistons.

Installation Notes

• Confirm required piston-to-wall clearance, ring end-gaps, and compression height per the Cummins service manual.
• Measure each cylinder; do not assume all holes finish to the same oversize.
• Check valve reliefs and bowl orientation; verify piston protrusion and gasket selection.
• Professional machine work and precise cleaning are critical for ring seal and longevity.

Warranty

Interstate-McBee new parts carry manufacturer warranty coverage. Contact us with your ESN and build details for exact terms and support.

Cross-References & Notes

• OEM reference: Cummins 3802134 piston kit (1.00 mm OS).
• Common BOM components include piston, pin, retainers, and ring set equivalent to the OEM kit.

Why Buy From CPP Diesel

• ESN-verified fitment help from real diesel techs.
• Fast shipping, easy returns, and secure checkout.
• Curated Cummins B-Series inventory for complete rebuilds.

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