Product Description
Cummins 3802422 OEM Piston Ring Set (.020 Over) – 5.9L Cummins 12V/24V (1989-2002)
The Cummins 3802422 OEM Piston Ring Set (.020 Over) is a genuine Cummins replacement piston ring set designed for rebuilding 5.9L Cummins diesel engines from 1989 through 2002. Manufactured to Cummins OEM specifications, this ring set is engineered to provide proper cylinder sealing, oil control, compression retention, and long-term durability in both stock and performance engine builds.
Designed for use with .020-inch oversize pistons, the Cummins 3802422 ring set is commonly used during engine overhauls, in-frame rebuilds, and complete performance rebuilds where the cylinders have been bored .020-inch oversize. Whether you're rebuilding a 12-valve or 24-valve 5.9L Cummins engine, genuine Cummins piston rings help restore compression, reduce blow-by, and maintain optimal engine efficiency.
Features
- Genuine Cummins OEM piston ring set
- Designed for .020-inch oversize pistons
- Precision-engineered for proper cylinder sealing
- Helps restore compression and reduce blow-by
- Improves oil control and combustion efficiency
- Manufactured to Cummins factory specifications
- Ideal for complete engine rebuilds and overhauls
- Compatible with both 12-valve and 24-valve 5.9L Cummins engines
- Designed for long service life and durability
- Trusted OEM quality for stock and performance applications
Fitment
- 1989-1998 Dodge Ram 5.9L Cummins 12-Valve Engines
- 1998.5-2002 Dodge Ram 5.9L Cummins 24-Valve Engines
- 5.9L Cummins 6BT Applications
- 5.9L Cummins ISB Applications
- Industrial 5.9L Cummins Engines Using .020 Over Pistons
- Engine rebuild and overhaul applications
Note: This piston ring set is intended for engines utilizing .020-inch oversize pistons. Verify piston size, cylinder bore dimensions, and engine serial number before ordering.
What's Included
- Cummins 3802422 OEM Piston Ring Set (.020 Over)
- Compression Rings
- Oil Control Rings
- OEM Cummins Packaging
Specifications
- Manufacturer: Cummins
- Part Number: 3802422
- Product Type: OEM Piston Ring Set
- Oversize: .020 Inch Over
- Engine Compatibility: 5.9L Cummins 6BT and ISB
- Engine Years: 1989-2002
- Application: Engine Rebuild and Overhaul
- Material: OEM Cummins Ring Material Specification
- Cylinder Bore Requirement: .020 Inch Oversize Bore
- Fitment Type: Direct Replacement
- Condition: New Genuine Cummins OEM Part
Cross Reference Numbers
3802422, Cummins 3802422, 5.9 Cummins .020 Over Rings, 6BT Piston Ring Set, ISB Piston Ring Set, Cummins Engine Rebuild Rings
FAQ
What does .020 over mean?
A .020 over piston ring set is designed for engines that have been machined .020 inch larger than the factory cylinder bore size. These rings must be used with matching .020 over pistons.
Will this fit a stock bore 5.9L Cummins engine?
No. The Cummins 3802422 ring set is specifically designed for engines that have been bored .020 inch oversize and should not be installed in a standard bore engine.
Is this a genuine Cummins part?
Yes. The 3802422 is a genuine Cummins OEM piston ring set manufactured to factory specifications for proper fit, sealing, and durability.
Will this work in both 12-valve and 24-valve engines?
Yes. This ring set is commonly used in compatible 5.9L Cummins 12-valve and 24-valve engine rebuilds utilizing .020 over pistons.
Why use OEM Cummins piston rings?
OEM Cummins piston rings provide precise fitment, excellent sealing performance, reduced oil consumption, and long-term durability compared to many aftermarket alternatives.
What should be checked before installation?
Always verify piston size, cylinder bore dimensions, ring end gap, and engine specifications before installation during any engine rebuild.
