Product Description
Cummins 3922488 OEM Rocker Lever Shaft – 5.9L 12V (1989–1998)
The Cummins 3922488 OEM Rocker Lever Shaft is a genuine Cummins valvetrain component designed for 1989–1998 5.9L 12-Valve Cummins engines. This rocker arm shaft provides a stable mounting surface for the rocker levers while ensuring proper valve operation, consistent valvetrain geometry, and long-term reliability in both stock and performance diesel applications. Built to Cummins OEM specifications, the 3922488 is an ideal replacement for worn, damaged, or high-mileage rocker shafts.
Whether you're rebuilding a 12-valve Cummins engine, performing cylinder head service, or upgrading worn valvetrain components, the Cummins 3922488 rocker lever shaft delivers the durability and fitment expected from genuine OEM Cummins parts. Designed for use with factory rocker arm assemblies, this shaft helps maintain proper valve timing and rocker arm alignment for reliable engine performance.
Features
- Genuine Cummins OEM rocker lever shaft
- Direct replacement for factory-installed rocker shaft
- Designed for 5.9L 12-valve Cummins engines
- Maintains proper rocker arm alignment and valve operation
- Supports reliable valvetrain performance
- OEM-quality construction and fitment
- Ideal for engine rebuilds and cylinder head service
- Compatible with factory rocker arm assemblies
- Built for long service life and durability
- Trusted Cummins Genuine Parts quality
Fitment
- 1989–1998 Dodge Ram 5.9L 12-Valve Cummins (6BT)
- Cummins 6B5.9 Engines
- Cummins B-Series Industrial Applications
- Cummins Agricultural Equipment Applications
- Cummins Marine and Power Unit Applications
- Compatible with factory rocker arm assemblies
Note: Always verify engine serial number and part number before ordering. This rocker lever shaft is intended for applications utilizing Cummins part number 3922488.
What's Included
- One Genuine Cummins 3922488 Rocker Lever Shaft
Specifications
- Manufacturer: Cummins Genuine Parts
- Part Number: 3922488
- Component Type: Rocker Lever Shaft
- Engine Family: Cummins B-Series
- Engine Compatibility: 5.9L 12-Valve Cummins
- Application: OEM Valvetrain Replacement
- Direct Replacement: Yes
- Material: OEM Hardened Steel Construction
- Compatible Rocker Arms: OEM Rocker Lever Assemblies
- Cross Reference Numbers: 3902583, 3907048
- Associated Rocker Arms: 3910810, 3910811
- Condition: New Genuine Cummins Part
Cross Reference Numbers
3922488, 3902583, 3907048, 3910810, 3910811, 3910814, 3922486, 3922487
FAQ
What does the Cummins 3922488 rocker lever shaft do?
The rocker lever shaft provides the mounting point for the rocker arms and allows proper transfer of motion from the camshaft and pushrods to the valves. Proper rocker shaft condition is essential for maintaining accurate valve operation.
Will this fit my 12-valve Cummins?
Yes. The Cummins 3922488 is commonly used on 1989–1998 5.9L 12-valve Cummins engines. Always verify your engine serial number and existing part number before ordering.
Is this a genuine Cummins part?
Yes. Part number 3922488 is a genuine OEM Cummins rocker lever shaft manufactured to factory specifications.
Should I replace the rocker shaft during a rebuild?
During engine rebuilds or cylinder head service, inspecting and replacing worn rocker shafts can help restore proper valvetrain geometry and reduce premature wear on rocker arms and valve train components.
What parts are commonly replaced with the rocker shaft?
Many builders inspect or replace rocker arms, pushrods, valve bridges, and related valvetrain hardware when servicing the rocker shaft assembly.
