Interstate-McBee M-3901356 T3 Turbo Inlet Gasket – 1989–2002 5.9L Cummins

OEM-style T3 divided (twin-scroll) turbo-to-manifold gasket for 1989–2002 Dodge Ram 2500/3500 5.9L Cummins. Designed to provide a reliable seal between the exhaust manifold and turbocharger on stock-style HX35/T3 setups. Interstate-McBee quality delivers an affordable, direct-fit replacement.

• Direct fit, stock footprint: Matches Cummins 3901356 dimensions for OE-like install.
• T3 divided sealing: Properly seals twin-scroll/T3 divided manifold to turbo for leak-free performance.
• Aftermarket value: Interstate-McBee quality at a lower cost than OEM, without sacrificing fit.
• Built for heat & pressure: High-temperature construction for durability at the turbo interface.

Specifications

Vehicle Fitment

Always verify by VIN/ESN and turbo/manifold flange style.

• Dodge Ram 2500/3500 5.9L Cummins
  • 1989–1993 12-Valve (T3 divided)
  • 1994–1998 12-Valve (T3 divided)
  • 1998.5–2002 24-Valve ISB (T3 divided)
• Additional applications: Used on many Cummins B-/C-Series engines where a T3 divided manifold/turbo is equipped. Confirm by part number and flange type.

Install Notes

• Ensure both flanges are flat, clean, and free of carbon; replace warped components as needed.
• Align the divider correctly between scrolls; do not flip to an undivided orientation.
• Follow factory fastener torque and sequence; re-torque after initial heat cycles if applicable.
• Sealants/sprays are typically not required unless specified by the service manual.

Warranty

Interstate-McBee new engine parts are backed by manufacturer warranty coverage; typical term is up to 24 months from installation for diesel applications.

Why Buy From CPP Diesel

• Clear 89–02 5.9L Cummins fitment and T3 divided guidance to eliminate guesswork.
• Fast shipping, easy returns, and real diesel tech support.
• Pair with studs, nuts, and manifold/turbo hardware for a complete, leak-free install.

FAQ