Product Description
Interstate-McBee M-3954324 Valve Cover Gasket — 2003–2004 5.9L Cummins (Aftermarket Replacement)
Direct-replacement valve cover perimeter gasket for 2003–2004 Dodge Ram 2500/3500 with the 5.9L Cummins ISB (24-valve, common-rail). Designed to seal the valve cover to the cylinder head and prevent oil seepage under heat and vibration. Sold individually.
- Reliable seal: High-temp elastomer construction resists oil, fuel mist, and heat cycling.
- Proper fit: Manufactured to OE dimensions for easy installation and leak-free performance.
- Service friendly: Ideal whenever the valve cover is removed for injector or valvetrain work.
- Value: Interstate-McBee quality at an excellent price point.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-3954324 |
| OEM Reference | Cummins 3954324 |
| Application | Valve cover perimeter gasket |
| Material | High-temperature elastomer (molded) |
| Sold As | Each (1 gasket) |
| Qty Required | 1 per engine |
Vehicle Fitment
Always verify by VIN or engine serial number (ESN) when possible.
- Dodge Ram 2500/3500 — 5.9L Cummins ISB (24-valve, common-rail)
- Model Years: 2003–2004
What’s Included
- (1) Valve cover gasket, P/N M-3954324
Recommended/Related Parts
- Valve cover bolt grommets/seals (replace if hardened or cracked)
- Injector harness / pass-through seals (if disturbed during service)
- Valve cover bolts (replace any damaged or over-torqued hardware)
Install Notes
- Clean and dry both sealing surfaces; remove old gasket material and debris.
- Do not use RTV or sealant unless specified by the service manual.
- Seat the gasket fully in the valve cover channel before installation.
- Tighten bolts evenly in a criss-cross pattern to factory torque spec.
- After the first heat cycle, check for any signs of seepage.
Why Buy From CPP Diesel
- Diesel-focused support and ESN-verified fitment help
- Fast shipping and easy returns
- Large inventory of complementary 5.9L Cummins service parts
FAQ
Will this fit my 2003–2004 5.9L Cummins?
Yes — this gasket is intended for 2003–2004 5.9L Cummins ISB (24-valve, common-rail) applications. For edge cases, verify by ESN.
How many do I need?
One gasket per engine.
Do I need new bolt grommets?
Recommended. Aged grommets can cause uneven clamping and minor seepage.
