aFe BladeRunner Exhaust Manifold

2007–2010 Dodge Ram 2500 / Ram 3500 5.9L Diesel

46-40054

Overview:

The aFe BladeRunner Exhaust Manifold is a direct replacement for the factory manifold on 2007 to 2010 Dodge Ram 2500 and Ram 3500 trucks equipped with the 5.9L diesel engine. Designed to solve the common cracking issues found in the stock manifold, the BladeRunner offers a durable and high-performance upgrade that benefits any diesel enthusiast. Whether your OEM manifold is failing or still intact, this manifold delivers improved longevity, enhanced exhaust flow, and reduced exhaust gas temperatures for better overall engine efficiency.

Engineered by aFe (Advanced Flow Engineering), a leader in performance automotive parts, the BladeRunner manifold is crafted to meet the demands of diesel truck owners seeking reliability and power gains without sacrificing factory emissions systems.

Key Features:

The BladeRunner Exhaust Manifold combines durability and performance enhancements with practical features designed for ease of use and long-term reliability:

• Outflows the factory manifold by up to 49%, increasing exhaust efficiency
• Improves throttle response and overall engine performance
• Cast-in EGR flanges allow retention of the factory EGR system for emissions compliance
• Thick wall design (0.25" vs. stock 0.15") increases strength and eliminates warping or cracking
• Machined ports and merged runner design reduce exhaust backpressure
• Dual 1/8 inch NPT exhaust gas temperature (EGT) probe ports for precise monitoring on each bank
• Includes six-port gaskets for a complete seal
• Hassle-free installation with all necessary mounting hardware included

Construction & Design:

The BladeRunner manifold is cast from premium 304 stainless steel, a significant upgrade over the cast iron used in the stock manifold. This material choice provides superior resistance to cracking and corrosion, ensuring a longer service life under the extreme conditions of diesel exhaust systems. The manifold walls are made thicker at 0.25 inches compared to the OEM’s 0.15 inches, adding rigidity and durability.

A reinforcing rib along the flange further strengthens the manifold, preventing warping and maintaining a perfect seal. The exhaust runners are carefully merged and machined to optimize flow, reducing turbulence and backpressure for improved turbocharger response.

Performance & Sound

By increasing exhaust flow by as much as 49%, the BladeRunner manifold promotes faster turbo spool-up and lowers exhaust gas temperatures. This results in enhanced engine performance, improved throttle response, and potentially better fuel efficiency. While primarily focused on durability and flow, the manifold also contributes to a cleaner, more efficient exhaust pulse, which can subtly enhance the diesel exhaust note without adding unwanted drone or harshness.

Installation & Fitment:

The BladeRunner Exhaust Manifold is designed as a direct bolt-on replacement for the 2007–2010 Dodge Ram 2500 and Ram 3500 5.9L diesel trucks. Installation is straightforward and requires no modifications to the vehicle’s existing exhaust or emissions systems. The manifold includes all necessary mounting hardware and detailed instructions to ensure a smooth, hassle-free upgrade.

What's Included:

• aFe BladeRunner Exhaust Manifold (Part #46-40054)
• All required mounting hardware
• Six-port gaskets for proper sealing
• Detailed installation instructions

Ideal For:

This exhaust manifold is ideal for Dodge Ram 2500 and 3500 owners who want to eliminate the common cracking issues of the stock manifold while gaining improved exhaust flow and performance. It suits diesel enthusiasts looking for a reliable, long-lasting upgrade that maintains factory emissions compliance and supports enhanced turbocharger efficiency. Whether for daily driving, towing, or performance applications, the BladeRunner manifold offers a durable and effective solution.

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.