aFe Power Bladerunner Manifolds Exhaust

2003–2007 Dodge Ram 2500 / Ram 3500 5.9L Cummins

46-40011

Overview:

The aFe Power Bladerunner Exhaust Manifold is engineered specifically for the 2003 to 2007 Dodge Ram 2500 and Ram 3500 equipped with the 5.9L Cummins engine. Designed to replace the factory exhaust manifold, this high-performance component addresses common issues such as exhaust manifold cracking while delivering enhanced exhaust flow and improved engine response. Ideal for Cummins enthusiasts seeking durability and performance gains, the Bladerunner manifold sets a new benchmark in exhaust manifold design.

By upgrading to the aFe Bladerunner manifold, drivers will experience quicker turbo spool times, better throttle response, and overall improved engine performance without compromising reliability or emissions compliance.

Key Features:

This exhaust manifold combines advanced engineering and robust construction to maximize exhaust efficiency and durability. Key features include:

• Constructed from premium cast 304 stainless steel for superior strength and corrosion resistance
• Reinforcing rib along the flange and ultra-thick wall flange at the port for enhanced durability
• Thick wall design measuring 0.25" compared to the stock 0.15" for increased structural integrity
• 23% greater exhaust flow compared to the factory manifold, improving performance and throttle response
• Merged runner design to optimize exhaust gas flow and reduce turbulence
• Matched ports for precise fitment and improved sealing
• Two EGT (Exhaust Gas Temperature) probe ports for accurate temperature monitoring
• 50-state legal with CARB Executive Order Number D-550-9, ensuring compliance with emissions regulations

Construction & Design:

The aFe Bladerunner manifold is expertly crafted from cast 304 stainless steel, a material known for its excellent heat resistance and long-lasting durability under extreme conditions. The manifold features a reinforcing rib along the flange and an ultra-thick wall flange at the port, significantly reducing the risk of cracks and warping that commonly affect factory manifolds.

Its thick wall design, measuring 0.25 inches, provides added strength over the stock 0.15-inch thickness. The merged runner layout is engineered to streamline exhaust flow, minimizing backpressure and enhancing turbocharger efficiency. Matched port surfaces ensure a precise seal against the cylinder head, preventing leaks and maintaining optimal exhaust gas flow.

Performance & Sound

Upgrading to the aFe Bladerunner manifold results in a noticeable improvement in turbo spool-up times and throttle responsiveness. The increased exhaust flow capacity reduces backpressure, allowing the turbocharger to operate more efficiently and deliver power more quickly. While primarily focused on performance gains, this manifold also contributes to a cleaner, more efficient exhaust pulse, which can subtly enhance the engine’s sound character without excessive noise.

Installation & Fitment:

The Bladerunner manifold is designed as a direct bolt-on replacement for the factory manifold on 2003–2007 Dodge Ram 2500 and Ram 3500 trucks equipped with the 5.9L Cummins engine. Installation requires no major modifications, making it suitable for both professional installers and experienced DIY enthusiasts. The inclusion of two EGT probe ports allows for easy integration with existing monitoring systems.

What's Included:

• aFe Power Bladerunner Cast 304 Stainless Steel Exhaust Manifold
• Two EGT probe ports pre-installed
• Installation hardware (if applicable)
• Instructions for proper installation and torque specifications

Ideal For:

This exhaust manifold is ideal for Dodge Ram 2500 and 3500 owners with the 5.9L Cummins engine who are looking to eliminate factory manifold cracking issues while enhancing performance and throttle response. It suits daily drivers, towing enthusiasts, and performance-minded individuals seeking a reliable upgrade that maintains emissions compliance.

Emissions Note

This aFe Power Bladerunner Exhaust Manifold is 50-state legal for 2003–2007 Dodge Ram 2500 and 3500 models, certified under CARB Executive Order Number D-550-9. It meets all applicable emissions standards, ensuring legal use on public roads across the United States.

aFe POWER (Advanced FLOW Engineering) offers dyno-proven intake, filtration, and exhaust upgrades aimed at measurable performance gains. The brand’s lineup is geared toward enthusiasts looking for better airflow, improved sound, and durable materials—from cold air intakes to stainless exhaust systems for street and track applications.