BD Diesel Common Rail Exhaust Manifold T4 Mount (1045987-T4) for 2003-2007 Cummins 5.9L

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The BD Diesel Common Rail Exhaust Manifold T4 Mount (1045987-T4) is a performance upgrade for 2003–2007 Dodge Ram trucks with the 5.9L Cummins engine. Designed to boost exhaust flow and reduce backpressure, it features a durable cast construction and a T4 turbo flange for fitting larger turbochargers. This enhances turbo spool-up, horsepower, and torque while resisting heat-related cracking. Ideal for towing, racing, or daily driving, it ensures better engine efficiency and reliability.

Total: $617.95
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Description

The BD Diesel Common Rail Exhaust Manifold T4 Mount (1045987-T4) is a high-performance upgrade designed specifically for 2003-2007 Dodge Ram trucks equipped with the 5.9L Cummins engine. Engineered to improve exhaust flow and reduce backpressure, this manifold features a robust cast design that enhances turbo spool-up and overall engine efficiency. The T4 turbo flange allows for the installation of larger, performance-oriented turbochargers, making it ideal for enthusiasts looking to increase horsepower and torque. Its durable construction helps resist cracking caused by high exhaust temperatures, while the precision-engineered ports ensure optimal alignment and sealing. Whether for towing, racing, or daily driving, the BD Diesel T4 exhaust manifold offers a reliable and efficient solution to maximize the potential of your Cummins-powered truck.

Additional information
Weight 25 lbs
Dimensions 28 × 8 × 7 in
Fitment

Fitment

 2003-2007 Cummins 5.9L

Features

Features

  • T4 mount with fully divided pulse manifold design
  • Designed for Borg Warner SX-E T4 installs on the Cummins 5.9 and 6.7
  • Cast from High-silicon ductile iron which is designed to withstand extreme temperatures and vibration
  • Precision connection joint allows for expansion and contraction, preventing cracks and exhaust leaks
  • Quicker turbo spool up with reduced back-pressure and increased power
  • Pre-drilled for pyrometer probes
  • Gaskets are available separately (1045986-T4)
Installation

Installation

INSTALL TIME

  • 2 Hours 30 Minutes

WARRANTY

Parts

  • 36-Months
  • 75,000 Miles
Warning

Warning

This product CANNOT be shipped to California!

About brand
BD Diesel Performance is a diesel performance manufacturer focused on reliability and towing performance. The company designs parts that improve durability, power delivery, and vehicle control. BD Diesel products support daily driving, heavy towing, and work-ready diesel trucks. BD Diesel engineers turbochargers, exhaust brakes, transmission upgrades, and fuel system components. Their products help manage heat, control exhaust flow, and protect drivetrain parts. These upgrades improve drivability under load and during long pulls. Diesel owners trust BD Diesel for proven solutions. Whether upgrading a tow rig or improving reliability, BD Diesel delivers parts built for real-world use.
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