BD DIESEL 1045987-T4 EXHAUST MANIFOLD W/T4 FLANGE – DODGE 2003–2007 5.9L CUMMINS

Product Description

The BD DIESEL 1045987-T4 Exhaust Manifold with T4 Flange is the ideal solution for Cummins owners who want to upgrade to a T4 frame turbocharger while keeping the turbo in the factory stock location. Designed for 2003–2007 Dodge Ram 2500/3500 5.9L Cummins, this manifold features a divided pulse design to improve exhaust energy delivery to the turbo, helping with quicker spool-up, better airflow, and improved drivability under load.

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Unlike factory manifolds that commonly crack or leak, this BD Diesel manifold is built from high-silicon ductile iron to withstand extreme heat cycles and vibration. The multi-piece design with precision expansion joints allows controlled expansion and contraction, reducing thermal stress and significantly improving long-term durability. If you’re installing a BorgWarner SX-E T4, S300/S400 style T4 turbo, or stepping up in airflow, this manifold keeps the install clean without moving the turbo or reworking your entire engine bay.

Fitment

• 2003–2007 Dodge Ram 2500 / 3500
• 5.9L Cummins Diesel Engine
• T4 turbo mounting flange
• Stock turbo location configuration

Key Features & Benefits

• T4 flange allows larger turbo installs while maintaining stock location
• Divided pulse manifold design for improved turbo spool and efficiency
• High-silicon ductile iron construction for extreme heat resistance
• Precision expansion joints reduce cracking and exhaust leaks
• Pre-drilled for pyrometer probe installation
• Ideal for performance builds, towing, and high-load use

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

• BD DIESEL 1045986-T4 EXHAUST MANIFOLD GASKET KIT – 1998.5–2018 DODGE 5.9L/6.7L CUMMINS

Does this manifold keep the turbo in the factory location?

Yes. This manifold is designed to mount a T4 turbocharger while keeping the turbo in the stock location for a cleaner install.

Will this help prevent cracking compared to the stock manifold?

Yes. The multi-piece design with expansion joints reduces thermal stress and helps prevent cracking and exhaust leaks common with factory manifolds.

Are gaskets or hardware included?

No. Gaskets and hardware are typically sold separately. We recommend using a BD Diesel gasket set for best sealing.

Specifications for BD DIESEL PRODUCTS 1045987-T4