ATS Diesel Big Foot T4 Pulse Flow Exhaust Manifold

1998–2002 Dodge Ram 2500 / Ram 3500 5.9L 24V Diesel

2049432218

Overview:

The ATS Diesel 3-piece Big Foot T4 Pulse Flow Exhaust Manifold is engineered specifically for Dodge Ram 2500 and Ram 3500 trucks equipped with the 5.9L 24-valve Cummins diesel engine from 1998 to 2002. Designed to replace the factory exhaust manifold, this high-performance component optimizes exhaust flow and enhances turbocharger efficiency. Ideal for diesel enthusiasts looking to improve power delivery and reliability, the Big Foot manifold supports increased airflow while maintaining durability under demanding conditions.

This exhaust manifold is perfect for those upgrading their Ram trucks for towing, hauling, or performance applications, providing a solid foundation for further modifications.

Key Features:

Built to deliver improved exhaust scavenging and turbo response, the ATS Diesel Big Foot T4 Pulse Flow Exhaust Manifold offers the following key features:

• 3-piece modular design for easier installation and maintenance
• Pulse flow technology to optimize exhaust gas velocity and reduce turbo lag
• T4 flange compatibility for a wide range of turbocharger options
• Heavy-duty construction to withstand high exhaust temperatures and pressures
• Precision-engineered to fit 1998–2002 Dodge Ram 2500 and 3500 5.9L 24V Cummins engines
• Improved exhaust flow compared to stock manifolds for enhanced performance
• Corrosion-resistant finish to extend service life

Construction & Design:

The Big Foot T4 Pulse Flow Exhaust Manifold is crafted from high-quality cast iron, chosen for its excellent heat retention and durability under extreme thermal cycling. The 3-piece design allows for easier handling and installation compared to one-piece manifolds, while maintaining structural integrity. The manifold’s pulse flow design carefully manages exhaust pulses to improve scavenging, which helps increase turbocharger efficiency and overall engine responsiveness.

Each flange and port is machined to precise tolerances to ensure a perfect fit with the factory exhaust ports and aftermarket turbochargers featuring a T4 flange. The robust construction ensures long-lasting performance even in heavy-duty applications such as towing and off-road use.

Installation & Fitment:

This ATS Diesel exhaust manifold is a direct fit replacement for Dodge Ram 2500 and Ram 3500 trucks equipped with the 5.9L 24-valve Cummins diesel engine from model years 1998 through 2002. Installation requires standard mechanical skills and basic hand tools. The 3-piece design simplifies the installation process by allowing easier access to tight engine bay areas.

No major modifications are necessary, and the manifold bolts directly to the factory exhaust ports and mates with T4 flange turbochargers. It is recommended to inspect and replace exhaust gaskets and hardware during installation to ensure a proper seal and prevent leaks.

What’s Included

• 3-piece Big Foot T4 Pulse Flow Exhaust Manifold assembly
• Mounting hardware and gaskets (as applicable)
• Installation instructions

Ideal For:

This exhaust manifold is ideal for Dodge Ram 2500 and 3500 owners who want to upgrade their 5.9L 24V Cummins diesel engine’s exhaust system for improved turbo response and durability. It suits diesel performance enthusiasts, heavy-duty truck operators, and anyone seeking a reliable, high-quality replacement manifold that supports aftermarket turbocharger setups.

ATS Diesel Performance builds diesel upgrade solutions engineered for higher torque, towing confidence, and competition-level durability. Best known for performance-built transmissions, ATS also offers turbochargers, exhaust and fuel system components, and other supporting parts designed to handle heavy loads and elevated power on modern diesel trucks.