Product Description
Interstate-McBee M-3907049 Valve Cover Hexagon Flange Bolt – 89–98 5.9L Cummins 12-Valve
Replacement hex flange bolt for the valve cover(s) on 1989–1998 Dodge Ram 2500/3500 with the 5.9L Cummins 12-valve (6BT). Built to OE form, fit, and function for reliable sealing and service. Sold individually.
- Direct replacement: Matches OE form factor for a straightforward install.
- Correct fitment: Interchange with Cummins reference 3907049 (verify by ESN when possible).
- Service friendly: Ideal when refreshing valve cover gaskets or replacing missing/corroded hardware.
- Value: Interstate-McBee quality at a competitive price.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-3907049 |
| OEM Reference | Cummins 3907049 |
| Component | Valve cover hexagon flange bolt |
| Sold As | Each (1 bolt) |
| Typical Qty (12V) | Commonly 12 bolts total (two per cover). Please verify your engine configuration before ordering. |
| Position | Valve cover hardware |
What’s Included
- (1) Valve cover hex flange bolt, P/N M-3907049
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 3907049 is specified (confirm by ESN).
Recommended/Related Parts
- Valve cover gasket set (12-valve)
- Valve cover grommets/seals
- Replacement valve cover(s)
- Shop towels and degreaser for sealing surface prep
Install Notes
- Clean the head and cover sealing surfaces; replace gaskets if hardened, flattened, or cracked.
- Start bolts by hand to avoid cross-threading; tighten in a crisscross pattern.
- Torque to the factory specification from the Cummins service manual—do not overtighten.
- Recheck for leaks after initial heat cycle and retorque if the manual specifies.
Why Buy From CPP Diesel
- ESN-verified fitment support from diesel specialists
- Fast shipping, easy returns, competitive pricing
- Deep inventory of complementary B-series hardware and gaskets
FAQ
Will this bolt fit my 1989–1998 5.9L Cummins?
Yes—this listing covers the 12-valve 5.9L Cummins used in 1989–1998 Dodge Ram 2500/3500. For edge cases, verify by ESN.
How many bolts do I need?
Most 12-valve setups use 12 bolts total (two per valve cover). Count yours to confirm before ordering.
Are gaskets included?
No. Bolts are sold individually. Add a valve cover gasket set if your originals are worn.
