Product Description
The Cummins 3928404 OEM Valve Cover is the factory-correct top-end cover for the legendary 1989–1998 5.9L 12-Valve Cummins engine. This genuine Cummins valve cover protects the rocker assembly, maintains proper top-end oil control, and ensures a leak-free seal when paired with the correct OEM valve cover gasket. Unlike aftermarket castings or low-quality reproductions, this OEM cover delivers perfect alignment, durability, and vibration resistance across all operating conditions.
If your original cover is cracked, leaking, or damaged from years of heat cycles, replacing it with the 3928404 OEM Valve Cover restores factory-spec sealing and appearance — a must for engine restorations, performance builds, or long-term reliability upgrades.
Fitment
- 1989–1993 Dodge D/W 250–350 with 5.9L 12-Valve Cummins (6BT)
- 1994–1998 Dodge Ram 2500/3500 with 5.9L 12-Valve Cummins (6BT)
- Automotive 5.9L 12V B-Series engines using individual valve covers
Cross-Reference (Cummins-Only)
Related Cummins 12-Valve top-end components:
• Cummins 3904409 OEM Valve Stem Guide – 51.75mm
• Cummins 3904408 OEM Valve Stem Guide – 60.50mm
• Cummins 3922488 OEM Rocker Lever Shaft – 12-Valve
FAQ
Is this the correct valve cover for all 12-Valve 5.9L Cummins engines?
Yes. The 3928404 cover fits all 1989–1998 12-Valve 6BT Cummins engines used in Dodge Ram trucks.
Does this valve cover include the gasket?
No. The gasket is sold separately. For best results, always install a new OEM gasket during replacement.
Is this cover metal or composite?
This is the OEM Cummins metal valve cover, designed for long-term durability and resistance to heat distortion.
Will this cover work with aftermarket studs, bolts, or dress-up kits?
Yes — as long as they maintain OEM dimensions. Always verify hardware clearance before installation.
Do the 12-Valve engines use individual covers or a one-piece cover?
The 5.9L 12-Valve uses six individual valve covers. This 3928404 cover is one of the OEM individual covers.
Specifications for cummins 3928404
| Specification | Value |
|---|---|
| Brand | Cummins Genuine Parts |
| Part Number | 3928404 |
| Component Type | Valve Cover – Individual Cylinder Cover |
| UPC | Not Published |
| GTIN | Not Published |
| Cross Reference | Used on all 12-Valve 6BT B-Series engines |
| E-Codes | N/A |
| Shipping Weight | 1.00 lb (approx.) |
| Package Dimensions | 10 x 5 x 5 in |
| Prop 65 Warning | Not Applicable |
