Product Description
Genuine Cummins
Cummins 3907049 — Valve Cover Bolt (Hex Flange Head Cap Screw)
MPN: 3907049 | Also Known As: valve cover bolt, hex flange head cap screw | Position: Valve cover fastener (12-valve)
Why This Part
- ✓ OE replacement for snapped or missing 12-valve valve cover hardware.
- ✓ Direct-fit for 1989–1998 5.9L 12-valve Cummins.
- ✓ Restores proper sealing & clamp load on the valve cover.
- ✓ Genuine Cummins hardware—correct head/flange style.
OE Fit Stock Replacement Qty as Needed
Quick Specs
| Type | Hex flange head cap screw (valve cover bolt) |
|---|---|
| OE Part # | 3907049 |
| Qty Required | 6 bolts for a complete set (one per 12-valve cover) |
| Recommended Seals | Use new O-rings/grommets with each bolt |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 1989–1993 | 5.9L Cummins 12-Valve | Dodge D/W 250 & 350 |
| 1994–1998 | 5.9L Cummins 12-Valve | Dodge Ram 2500/3500 |
Notes: This bolt is for 12-valve engines only. 1998.5+ 24-valve models use different fasteners; verify by VIN/ESN.
Often Paired With
- Valve Cover O-Ring: Cummins 3910824 (one per bolt)
- Valve Cover Gasket: Cummins 3930906 (full cover gasket)
- Complete Set: Order six bolts if replacing all 12-valve covers
What’s In The Box
- (1) Genuine Cummins Valve Cover Bolt (3907049)
- Seals/grommets sold separately (see “Often Paired With”).
Install Tips
- Replace the O-ring/grommet with each bolt; snug evenly to avoid leaks.
- Torque to factory spec; don’t over-tighten stamped covers.
- Inspect the valve cover sealing surface and gasket when servicing.
FAQ
WILL THIS FIT MY 5.9L 12-VALVE?Yes—designed for 1989–1998 5.9L 12-valve Dodge applications. Not for 24-valve.
HOW MANY BOLTS DO I NEED?Six bolts complete a full set (one per 12-valve cover).
DO I NEED NEW O-RINGS?Yes—replace the O-ring/grommet with each bolt to prevent oil seepage.
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins hardware for proper fit and clamp load.
WHAT ABOUT 24-VALVE OR COMMON-RAIL ENGINES?Those engines use different hardware; check your VIN/ESN for the correct fasteners.
Product Videos
Custom Field
Vehicle Year 1989-1998
Vehicle Make DODGE RAM
ENGINE 12V 5.9L CUMMINS
Part Type VALVE COVER
