Product Description
Interstate-McBee M-3930906 Valve Cover Gasket – 1989–1998 5.9L Cummins 12-Valve
OE-style valve cover sealing gasket for the 1989–1998 Dodge Ram 2500/3500 with the 5.9L Cummins 12-valve (6BT). Restores proper seal between the valve cover and cylinder head to prevent oil seepage. Sold individually.
- Direct replacement: Built to OE form and fit for a leak-free seal.
- Durable construction: Designed to resist heat, oil, and deformation.
- Service friendly: Ideal for routine top-end refreshes and leak repairs.
- Value: Interstate-McBee quality at an aftermarket price.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-3930906 |
| OEM Reference | Cummins 3930906 |
| Sold As | Each (1 valve cover gasket) |
| Qty Required (12V) | 6 gaskets (one per valve cover) |
| Position | Valve cover to cylinder head |
What’s Included
- (1) Valve cover gasket, P/N M-3930906
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
- Additional B-Series applications (4B/6B) where Cummins 3930906 is specified (confirm by ESN).
Recommended/Related Parts
- Valve cover bolt grommets/seals
- Valve cover breather grommet
- Rocker/valvetrain inspection gasket hardware
- Tappet cover (side cover) gasket
Install Notes
- Clean both sealing surfaces thoroughly; remove old gasket material and oil residue.
- Inspect and replace bolt grommets/seals if hardened or cracked.
- Seat the gasket evenly; torque fasteners in a criss-cross pattern to the factory spec.
- Avoid sealants unless specified by the service manual.
Why Buy From CPP Diesel
- ESN-verified fitment support from diesel specialists
- Fast shipping and easy returns
- Deep inventory of complementary B-series top-end parts
FAQ
How many gaskets do I need?
The 12-valve 5.9L uses six individual valve covers—order six gaskets for a complete set.
Does this fit 24-valve (1998.5–2002) engines?
No. This listing is for 12-valve applications only.
Do I need new bolt grommets?
Recommended. Old grommets harden with heat and can cause weeping even with a new gasket.
