BD Diesel 1045986-T4 T4 Exhaust Manifold Gasket Set for 1998.5–2018 Dodge Cummins | CPP DIESEL

Product Description

The BD DIESEL 1045986-T4 Exhaust Manifold Gasket Set is the correct sealing kit for installing or servicing a BD Diesel T4 Mount Exhaust Manifold on 1998.5–2018 Dodge Ram 5.9L and 6.7L Cummins applications. This gasket kit is built to deliver a reliable, leak-free seal between the cylinder head, exhaust manifold, and T4 turbo mounting flange — helping prevent boost leaks, exhaust leaks, and premature hardware loosening.

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This kit is designed specifically for T4 mount configurations and is not intended for stock turbo mounting applications. It includes the essential gaskets needed for a clean install, proper alignment, and consistent sealing under high exhaust temperatures and heavy load conditions.

Fitment

• 1998.5–2007 Dodge Ram 2500 / 3500 – 5.9L Cummins
• 2007.5–2018 Dodge Ram 2500 / 3500 – 6.7L Cummins
• For use with BD Diesel T4 mount exhaust manifolds only
• Not for use on stock turbo mounting applications

What’s Included

• Exhaust manifold to cylinder head gasket set (6-cylinder)
• T4 turbo flange gasket

Why Replace Your Manifold Gaskets?

• Helps prevent exhaust leaks that reduce spool-up and efficiency
• Improves sealing after manifold or turbo removal
• Reduces risk of hardware loosening from hot/cold cycling
• Supports high-heat towing and performance applications

Cross-Reference & Compatible BD Diesel Products (BD DIESEL ONLY)

• BD DIESEL 1045986-T6 GASKET SET EXHAUST MANIFOLD T6 MOUNT DODGE RAM 1998.5–2018 5.9L/6.7L
• BD DIESEL 1045992-T4 6.7L CUMMINS T4 EXHAUST MANIFOLD GASKET SET DODGE RAM 2007.5–2018
• BD DIESEL 1045995-T4 CUMMINS 20-DEGREE T4 EXHAUST MANIFOLD DODGE RAM 1998.5–2007 5.9L

Will this gasket set fit a stock turbo mount?

No. This gasket kit is designed for T4 mount exhaust manifold applications only.

Does this include the turbo flange gasket?

Yes. This kit includes the T4 turbo mounting flange gasket along with the cylinder head manifold gaskets.

Do I need this kit if I remove the manifold?

Yes. Anytime the manifold is removed, replacing gaskets helps ensure a proper seal and prevents exhaust leaks.

Specifications for BD DIESEL PRODUCTS 1045986-T4