Interstate-McBee M-3818823 Exhaust Manifold / Turbo Mounting Stud – 89–18 5.9L & 6.7L Cummins

OE-style turbo-to-exhaust-manifold stud engineered for long life in high-heat diesel environments. The Interstate-McBee M-3818823 is a direct-fit replacement for Cummins hardware on 1989–2018 5.9L & 6.7L B-Series applications—ideal when replacing the turbo, manifold, or addressing hardware fatigue.

• Direct replacement: Matches the form, fit, and function of the original stud.
• High-heat durability: Built for repeated thermal cycles at the turbo/manifold joint.
• OEM cross-ref: Replaces Cummins 3818823 (see matching nut below).
• Sold individually: Order the quantity needed for your turbo/manifold flange.

Specifications

Vehicle Fitment

Always verify by engine serial number (ESN) when possible.

• Dodge Ram 2500/3500 — 5.9L Cummins
  • 1989–1993 12-Valve (VE-pump)
  • 1994–1998 12-Valve (P-pump)
  • 1998.5–2002 24-Valve ISB
  • 2003–2007 24-Valve ISB (common-rail)
• Dodge Ram 2500/3500 — 6.7L Cummins
  • 2007.5–2018 24-Valve ISB 6.7L

Installation Notes

• Inspect/clean threads in the manifold; chase threads if needed to ensure proper seating.
• Apply high-temp anti-seize to exposed threads as appropriate; follow the Cummins service manual.
• Torque fasteners per OEM procedures and sequence; replace aged nuts with new 3818824 flange nuts.
• Many applications typically use four studs/nuts at the turbo-to-manifold flange—verify your setup.

What’s Included

• (1) Turbo/Manifold Mounting Stud (M-3818823)

Why Buy From CPP Diesel

• Diesel experts with ESN-verified fitment support for Cummins B-Series hardware.
• Fast shipping, easy returns, and curated 5.9L/6.7L service parts to finish the job right.

FAQ