Product Description
Interstate-McBee M-3910811 Intake Rocker Lever – 89–98 5.9L Cummins (12-Valve)
OEM-style intake rocker lever engineered for the legendary 1989–1998 Dodge Ram 2500/3500 5.9L Cummins 12-valve (6BT). Interstate-McBee’s precision build delivers reliable valve-train motion, stable lash settings, and long service life—at a value price versus OEM.
- Direct fit: Replaces Cummins 3910811 with OEM-equivalent geometry and finish.
- Built for durability: Tight tolerances for smooth pivot action and consistent valve timing.
- Aftermarket value: Interstate-McBee quality at a fraction of genuine OEM cost.
- Service friendly: Pairs with new adjuster screw and lock nut for proper lash setup.
Specifications
| Part Number | M-3910811 (Interstate-McBee) |
|---|---|
| OEM Cross-Reference | 3910811 (Cummins) |
| Additional References | 3900540, 3906464, FP-3910811 |
| Position | Intake rocker lever (12-valve) |
| Engine Family | Cummins B-Series 5.9L 12V (6BT) |
Vehicle Fitment
Always confirm by engine serial number (ESN) for the most accurate fitment.
- Dodge Ram 2500/3500, 5.9L Cummins 12V (6BT)
- 1989–1993 (VE-pump 12V)
- 1994–1998 (P-pump 12V)
- Notes: Also used across many B-Series/industrial applications; verify by ESN.
Recommended Companion Parts
- Rocker lever adjuster screw & lock nut (e.g., M-3900706)
- Rocker lever exhaust mate (M-3910810) if refreshing a full bank
- Rocker shaft/pedestal hardware as needed
Installation Notes
- Inspect rocker shaft, pedestal, and pushrod tips; replace worn components.
- Set valve lash to factory spec on a cold engine; re-check after initial heat cycle.
- Follow Cummins service manual procedures for torque and sequence.
Warranty
Covered by Interstate-McBee’s aftermarket parts warranty. For coverage details and terms, contact our team.
Why Buy From CPP Diesel
- ESN-verified fitment support by real diesel techs
- Fast shipping and hassle-free returns
- Deep catalog of B-Series valvetrain, gaskets, and hardware
FAQ
Is M-3910811 the intake or exhaust rocker?It is the intake rocker lever. The common exhaust mate is M-3910810.
Will this fit all 1989–1998 5.9L Cummins trucks?
Yes—fits the 12-valve 5.9L Cummins used in 1989–1998 Dodge Ram 2500/3500. For industrial or 4BT variants, verify by ESN.
Do I need new adjuster screws?
We recommend replacing the adjuster screw and lock nut during rocker service to ensure stable lash settings.
How does Interstate-McBee compare to OEM?
Interstate-McBee builds to OEM-equivalent dimensions and finish at a lower price point, offering excellent value for stock rebuilds.
Product Videos
Custom Field
YEAR 1989-1998
MAKE DODGE
ENGINE 5.9L
