Product Description
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
| Brand / SKU | Interstate-McBee M-3901356 |
|---|---|
| OEM Cross-Ref | Cummins 3901356 (Turbo-to-Manifold Gasket) |
| Flange Type | T3 divided (twin-scroll) |
| Position | Exhaust manifold to turbocharger |
| Quantity | 1 per engine (sold individually) |
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
Will this fit my stock HX35 on a 5.9L Cummins?Yes. This gasket matches the stock T3 divided turbo flange used on 1989–2002 Dodge 5.9L Cummins applications.
Is this the same as Cummins 3901356?
Functionally equivalent fitment to OEM Cummins 3901356. This is the Interstate-McBee aftermarket version.
Does it work with aftermarket turbos?
Yes, if the turbo uses a T3 divided (twin-scroll) inlet and mates to a T3 divided manifold. Verify flange type on your turbo/manifold.
How many gaskets do I need?
One gasket per engine (between the exhaust manifold and turbocharger).
Should I use copper spray or RTV?
Generally no. Install clean and dry unless your service manual specifies otherwise for your application.
