Product Description
Interstate-McBee M-3802132 Piston Kit – .020 Over Marine Bowl (89–98 5.9L Cummins 12V)
Restore compression and durability on your 1989–1998 5.9L Cummins 12-valve (6BT) with the Interstate-McBee M-3802132 piston kit. This .020" (0.50 mm) oversize, marine-style large bowl piston is a proven upgrade for 12V builds that need an overbore, delivering OEM-style fit with aftermarket value.
- .020" (0.50 mm) oversize: Ideal for blocks machined during rebuilds.
- Marine-style large bowl: Popular choice for 12V performance and towing builds.
- OEM-equivalent form, fit & function: Built to Cummins-spec geometry.
- Aftermarket value: Save versus OEM while maintaining dependable quality.
Specifications
| Interstate-McBee P/N | M-3802132 |
|---|---|
| OEM Cross-Reference | Cummins 3802132 |
| Bore Size | .020" over (0.50 mm) |
| Bowl Type | Marine-style large bowl |
| Kit Contents | Piston, wrist pin, retainers; rings sold separately (see related .020 ring set) |
| Recommended Ring Set | Interstate-McBee M-3802422 (.020) – sold separately |
Vehicle Fitment
Always verify by engine serial number (ESN) for best results.
- Dodge Ram 2500/3500, 5.9L Cummins 12-Valve (6BT):
- Model Years: 1989–1998
- Additional B-Series Applications: 4B/6B industrial and marine (varies by ESN and piston spec).
Install Notes
- Measure and confirm cylinder finish and piston-to-wall clearance after machining.
- Check ring end-gaps and orientation; follow Cummins service manual specs.
- Verify piston protrusion and head gasket selection during assembly.
What’s Included
- (1) Piston – .020" over marine-style bowl
- (1) Wrist pin
- (2) Pin retainers (circlips)
- Rings sold separately – add Interstate-McBee M-3802422 (.020) ring set
Why Buy From CPP Diesel
- ESN-verified fitment support from real diesel techs
- Fast shipping and easy returns
- Deep inventory of B-Series rebuild parts to finish the job
FAQ
Will this fit my 12-valve 5.9L Dodge Ram?Yes. M-3802132 is specified for 1989–1998 5.9L Cummins 12V (6BT) applications that are bored .020" (0.50 mm). Always verify by ESN before ordering.
What’s the difference with the “marine-bowl” piston?
The marine-style piston uses a large bowl design favored on 12V builds for drivability and durability. It’s a direct-fit replacement when your block is machined .020" over.
Are piston rings included?
Rings are typically sold separately. For .020" over builds, add Interstate-McBee M-3802422 piston ring set to complete the cylinder.
Is there a standard-bore or .040" alternative?
Yes. Standard-bore and .040" over marine-bowl options are available in matching series for 1989–1998 5.9L Cummins 12V. See related products on this page.
Product Videos
Custom Field
YEAR 1989-1998
MAKE DODGE
ENGINE 5.9L
