Product Description
Interstate-McBee M-3910810 Exhaust Rocker Lever – 89–98 5.9L Cummins 12-Valve
Direct-fit exhaust rocker lever for the 1989–1998 Dodge Ram 2500/3500 with the 5.9L Cummins 12-valve (6BT). Built to OE form, fit, and function to restore smooth valvetrain operation. Sold individually.
- OE-style construction: Matches factory geometry for proper valve lift and motion.
- Reliable materials: Precision-machined lever for durability in stock applications.
- Service ready: Ideal during top-end refreshes with new bridges, pivots, and push rods.
- Value: Interstate-McBee quality at an aftermarket price point.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-3910810 |
| OEM Reference | Cummins 3910810 (exhaust rocker) |
| Sold As | Each (1 exhaust rocker lever) |
| Qty Required (12-valve) | 6 exhaust rockers (one per cylinder) |
| Position | Exhaust rocker lever (valvetrain) |
What’s Included
- (1) Exhaust rocker lever, P/N M-3910810
Vehicle Fitment
Always verify by engine serial number (ESN) when possible.
- Dodge Ram 2500/3500 5.9L Cummins (12-valve 6BT)
- Model Years: 1989–1998
- Other B-Series applications where Cummins 3910810 is specified (confirm by ESN).
Recommended/Related Parts
- Intake rocker lever (matching 12-valve)
- Rocker lever bridges and pivot/fulcrum assemblies
- Adjusting screws and lock nuts
- Push rods (12-valve 5.9L)
- Valve springs, keepers, and retainers
- Rocker shaft and hardware
Install Notes
- Work on a cool engine; keep components clean and organized by cylinder.
- Inspect rocker tips, bridge wear surfaces, and push rod ends; replace if pitted or out of round.
- Lubricate contact points during assembly and set lash to factory spec per the service manual.
- Rotate the engine by hand and re-check lash after initial run-in.
Why Buy From CPP Diesel
- ESN-verified fitment support from diesel specialists
- Fast shipping, easy returns, competitive pricing
- Deep inventory of complementary B-Series valvetrain parts
FAQ
Is this the exhaust or intake rocker?
This listing is for the exhaust rocker lever. The 12-valve uses 6 intake and 6 exhaust rockers.
How many do I need?
There are 6 exhaust rocker levers on a 12-valve 5.9L (one per cylinder). Parts are sold individually.
Will this fit my 24-valve (1998.5–2002)?
No. This part is for 12-valve engines only.
