Product Description
Cummins 3910810 OEM Exhaust Rocker Arm (Rocker Lever) – 5.9L 12V 1989–1998
The Cummins 3910810 OEM Exhaust Rocker Arm (Rocker Lever) is a genuine Cummins replacement valvetrain component designed for 1989–1998 5.9L 12-Valve Cummins diesel engines. Manufactured to meet original equipment specifications, this rocker arm transfers motion from the pushrod to the exhaust valve, ensuring proper valve operation, reliable engine performance, and long-term durability.
Whether you're performing a complete engine rebuild, repairing valvetrain wear, or replacing damaged rocker components, the Cummins 3910810 provides OEM-quality fit, function, and reliability. Built from durable materials and engineered for the demanding conditions found in diesel applications, this rocker lever helps maintain proper valve timing and efficient engine operation.
Features
- Genuine Cummins OEM replacement component
- Direct replacement exhaust rocker arm
- Designed for 5.9L 12-Valve Cummins diesel engines
- Restores proper valvetrain operation
- Precision-machined for OEM fit and performance
- Durable construction for long service life
- Ideal for engine rebuilds and valvetrain repairs
- Maintains proper valve actuation and timing
- Manufactured to Cummins original equipment standards
- Helps reduce valvetrain wear and performance issues
Fitment
- 1989 Dodge Ram 2500 5.9L Cummins 12V
- 1990 Dodge Ram 2500 5.9L Cummins 12V
- 1991 Dodge Ram 2500 5.9L Cummins 12V
- 1992 Dodge Ram 2500 5.9L Cummins 12V
- 1993 Dodge Ram 2500 5.9L Cummins 12V
- 1994 Dodge Ram 2500 5.9L Cummins 12V
- 1995 Dodge Ram 2500 5.9L Cummins 12V
- 1996 Dodge Ram 2500 5.9L Cummins 12V
- 1997 Dodge Ram 2500 5.9L Cummins 12V
- 1998 Dodge Ram 2500 5.9L Cummins 12V
- Additional 5.9L Cummins industrial and commercial applications may apply
Note: This rocker arm is designed for the exhaust valve position. Verify engine serial number, application requirements, and component location before ordering.
What's Included
- Cummins 3910810 OEM Exhaust Rocker Arm
Specifications
- Manufacturer: Cummins
- Part Number: 3910810
- Component Type: Exhaust Rocker Arm
- Alternate Name: Rocker Lever
- Engine Compatibility: 5.9L Cummins 12-Valve
- Engine Family: 6BT Cummins
- Engine Configuration: Inline 6-Cylinder Diesel
- Position: Exhaust Valve Side
- Fuel System Compatibility: Mechanical Injection
- OEM Replacement: Yes
- Material: OEM Cast and Machined Steel Construction
- Application: Engine Repair, Maintenance, and Rebuilds
Cross Reference Numbers
3910810, Cummins 3910810, OEM Exhaust Rocker Arm, OEM Rocker Lever, 6BT Exhaust Rocker Arm, 12 Valve Cummins Rocker Lever
FAQ
What does the Cummins 3910810 rocker arm do?
The rocker arm transfers movement from the pushrod to the exhaust valve, allowing proper valve opening and closing during engine operation.
Is this an OEM Cummins part?
Yes. The 3910810 is a genuine Cummins OEM replacement component manufactured to original equipment specifications.
Will this fit a 24-valve Cummins engine?
No. This rocker arm is designed specifically for 1989–1998 5.9L 12-valve Cummins engines and is not intended for 24-valve applications.
Should rocker arms be replaced during an engine rebuild?
Rocker arms should be inspected for wear, excessive play, cracks, or damage during any rebuild. Replacing worn components helps maintain proper valve train operation and reliability.
Can a worn rocker arm cause engine performance issues?
Yes. Excessive rocker arm wear can affect valve operation, potentially causing valve train noise, reduced performance, and accelerated component wear.
Is this for the intake or exhaust valve position?
This specific Cummins 3910810 rocker arm is designed for the exhaust valve position.
