BD Diesel Cast Exhaust Manifold

2007–2018 Dodge Ram 2500 & 3500 5.7L/6.4L/6.7L Diesel & Hemi Engines

Part #: 1045965

Overview

The BD Diesel Cast Exhaust Manifold is engineered to deliver exceptional durability and reliability for Dodge Ram trucks equipped with 5.7L Hemi, 6.4L 392, 5.9L Diesel, and 6.7L Cummins diesel engines from 2007 through 2018. Designed for diesel and gas-powered Ram 2500 and 3500 models, this manifold is ideal for enthusiasts and professionals seeking a robust replacement or upgrade that withstands the rigors of heavy-duty use.

Built to handle extreme temperatures and vibrations common in demanding driving conditions, this manifold enhances exhaust flow while reducing thermal fatigue. Its fully divided pulse design improves exhaust scavenging, contributing to engine efficiency and longevity.

Key Features

BD Diesel’s cast exhaust manifold incorporates advanced engineering to ensure long-lasting performance and reliability. Key features include:

• Fully divided pulse manifold design for optimized exhaust flow and reduced backpressure
• Constructed from high-silicon ductile iron for superior heat resistance and durability
• Precision slip joints that accommodate thermal expansion and contraction, minimizing cyclic fatigue
• Engineered to withstand extreme temperatures and vibration typical of diesel and Hemi engines
• Direct fitment for multiple Dodge Ram 2500 and 3500 models from 2007 to 2018
• Improves manifold longevity by reducing stress caused by thermal cycling
• Compatible with both diesel and gasoline-powered engines within specified model years

Construction & Design

This exhaust manifold is crafted from high-silicon ductile iron, a material chosen for its excellent thermal stability and resistance to cracking under high heat and vibration. The fully divided pulse design separates exhaust pulses to improve scavenging and reduce interference between cylinders, which helps maintain consistent exhaust flow and engine efficiency.

Precision-engineered slip joints allow the manifold to expand and contract naturally with temperature changes, significantly reducing the risk of thermal fatigue and extending the service life of the manifold. This thoughtful design ensures reliable operation even under the most demanding conditions encountered by heavy-duty trucks.

Installation & Fitment

The BD Diesel Cast Exhaust Manifold is a direct replacement part designed to fit a wide range of Dodge Ram 2500 and 3500 models equipped with 5.7L Hemi, 6.4L 392, 5.9L Diesel, and 6.7L Cummins diesel engines from 2007 to 2018. Installation requires no modifications, making it a straightforward upgrade or replacement for your factory manifold.

Professional installation is recommended to ensure proper torque specifications and gasket sealing, which are critical for optimal performance and leak-free operation.

What's Included

• BD Diesel Cast Exhaust Manifold
• Precision slip joint assembly
• Installation hardware (where applicable)
• Gaskets (if included per kit specifications)

Ideal For

This manifold is perfect for Dodge Ram owners who demand durability and reliability from their exhaust components, whether for daily driving, towing, or heavy-duty work. It suits those looking to replace a worn or cracked factory manifold with a high-quality, long-lasting solution engineered specifically for their engine and model year.

It is also an excellent choice for diesel performance enthusiasts seeking improved exhaust flow and thermal management without sacrificing OEM fitment or reliability.

BD Diesel Performance designs and manufactures diesel performance parts aimed at stronger power delivery, improved reliability, and heavy-duty capability. Their lineup spans turbo and fueling upgrades, manifolds, intercoolers, and other supporting components—built for Cummins, Power Stroke, and Duramax owners who want more torque for towing, work, or competition.