BD DIESEL 1045947-T4 EXHAUST WASTEGATED MANIFOLD W/T4 MOUNT / 40-DEGREE DODGE 1998.5–2007 5.9L CUMMINS

Product Description

The BD DIESEL 1045947-T4 Exhaust Wastegated Manifold is a heavy-duty, pulse-flow, divided exhaust manifold designed for 1998.5–2007 Dodge Ram 5.9L Cummins applications running a T4 turbocharger with a 40-degree mount. Built for high-performance towing, street, and custom turbo setups, this manifold improves exhaust energy management to help reduce drive pressure, enhance spool characteristics, and support higher airflow turbocharger configurations.

BD Diesel 1045947-T4, 5.9 Cummins T4 manifold, wastegated exhaust manifold, 40 degree T4 mount, divided pulse flow manifold, turbo spool improvement, thick wall ductile iron exhaust manifold, custom turbo Cummins manifold

This manifold features a cast and machined wastegate port that completely divides the manifold into two sections to retain divided pulse flow. The internal runner geometry is optimized to improve exhaust flow across the RPM range while maintaining durability under extreme heat cycles. Thick-wall, high-silicone ductile iron construction helps resist cracking and warping common with factory manifolds, making it an excellent foundation for compound and single turbo performance builds.

Fitment

• 1998.5–2007 Dodge Ram 2500 / 3500
• 5.9L Cummins Diesel Engine (24V / Common Rail)
• Designed for T4 turbo applications
• 40-degree turbo mounting configuration

Key Features & Benefits

• Wastegated divided pulse-flow manifold for improved turbo response
• Cast and machined wastegate port divides the manifold into two sections
• Optimized runner geometry to improve flow through the RPM band
• Thick-wall high-silicone ductile iron for heat retention and durability
• Excellent upgrade for custom turbo systems and performance builds

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

For maximum performance and a complete installation, pair this manifold with other BD Diesel turbo system support parts available on cppdiesel.com. Only verified working BD Diesel product links should be used here.

Is this manifold a direct bolt-on for a factory turbo?

No. This manifold is designed for T4 turbo applications with a 40-degree mount. Additional turbo system components and fabrication may be required depending on your turbo setup.

What’s the advantage of a divided pulse-flow manifold?

A divided pulse-flow design helps maintain exhaust pulse energy for improved turbo response, and can reduce drive pressure under load when compared to undivided manifold designs.

Does this manifold help prevent cracking compared to stock?

Yes. Thick-wall ductile iron construction and expansion management are designed to reduce cracking and warping commonly seen with factory exhaust manifolds.

Specifications for BD DIESEL PRODUCTS 1045947-T4