T4 Stainless Steel Exhaust Manifold for Cummins 6B 5.9L 12V

This T4 stainless steel exhaust manifold is designed for 5.9L 12 valve Cummins engines (1989–1998) and features a T4 turbo mounting flange, making it ideal for S300 and S400 frame turbochargers, compound turbo setups, and high-horsepower single turbo builds. The optimized runner design improves exhaust gas flow to the turbocharger, helping reduce drive pressure, support higher boost levels, and improve overall turbo efficiency.

Fitment

• 1989–1998 Dodge Ram 5.9L 12V Cummins -- 6B (rectangular port configuration)

Product Details

• Material: Stainless steel construction for heat and corrosion resistance
• Turbo Flange: T4 configuration for aftermarket turbocharger compatibility
• Compatible Turbos: S300, S400, and other T4 frame turbos; supports compound and high-boost single turbo applications
• Design: Runner configuration optimized for exhaust gas flow and reduced back pressure
• Ports: Rectangular port configuration for direct fitment to Cummins 6B engines
• Gaskets and Hardware: Refer to product photos for included components; verify mounting position and turbo flange requirements before ordering

Installation

This is a bolt-on replacement that requires removal of the factory exhaust manifold and transfer of gaskets and hardware. Professional installation is recommended to ensure proper fitment and leak-free seal.

Check local emissions regulations before purchase. Professional installation is recommended.

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