Interstate-McBee M-3907049 Valve Cover Hexagon Flange Bolt – 89–98 5.9L Cummins (12-Valve)

OEM-style hex flange head valve cover bolt engineered for 1989–1998 5.9L Cummins 12-valve (6BT) applications. Direct-fit replacement for Cummins 3907049, delivering proper clamp load and reliable sealing when servicing or replacing valve cover hardware.

• Direct replacement: Matches OE form, fit, and function for Cummins 3907049.
• Hex flange head: Built-in flange distributes load for better gasket retention.
• Durable hardware: Quality aftermarket construction from Interstate-McBee.
• Standard bolt (no stud): Ideal when not using the factory appearance plate.

Specifications

What’s Included

• (1) Valve cover hex flange bolt

Vehicle Fitment

For best results, verify by engine serial number (ESN).

• Dodge Ram 2500/3500 with 5.9L Cummins 12-Valve (6BT)
  • Model Years: 1989–1998 (1st-gen 1989–1993, 2nd-gen 1994–1998)
• Common across B-Series: Also seen on 4BT/6BT B-Series platforms (industrial/ag). Confirm by ESN.

Install Notes

• Replace aged O-rings and valve cover gaskets when servicing the hardware.
• Torque evenly in a cross pattern per the Cummins service manual.
• On many 12V engines, positions #1 and #6 may use a special stud/bolt combo if the factory appearance plate is installed; this is a standard bolt.

Related Service Parts (sold separately)

• Valve Cover Bolt O-Ring: 3910824
• Valve Cover Gasket: 3930906

Warranty

Interstate-McBee new engine parts carry manufacturer warranty coverage. General engine parts are typically covered up to 24 months; certain valve-train items may carry 12 months. For exact terms on this hardware, please contact us.

Why Buy From CPP Diesel

• ESN-verified fitment support by real diesel techs
• Fast shipping, easy returns
• Curated B-Series parts to complete the whole job

FAQ