aFe BladeRunner Exhaust Manifold

2019–2024 Ram 1500 5.7L V8 HEMI

Part #: 46-40154

Overview

The aFe BladeRunner Ported Ductile Iron Exhaust Manifold is a precision-engineered upgrade designed specifically for the 2019 to 2024 Ram 1500 equipped with the 5.7L V8 HEMI engine. This direct-fit manifold replaces the factory exhaust manifolds to improve exhaust flow, enhance throttle response, and increase overall engine efficiency without sacrificing reliability. It is an ideal solution for Ram 1500 owners seeking a durable, high-performance exhaust component that supports both daily driving and spirited performance applications.

By addressing common weaknesses found in OEM manifolds, the BladeRunner manifold offers a robust and long-lasting upgrade that withstands high temperatures and thermal cycling, ensuring consistent performance under demanding conditions.

Key Features

The aFe BladeRunner manifold combines advanced engineering with durable materials to deliver measurable performance improvements and enhanced longevity:

• Port-matched inlet and outlet openings precisely machined to factory gasket specifications for optimal exhaust flow and sealing.
• Outflows factory manifolds by approximately 15%, contributing to improved engine breathing and throttle response.
• Constructed with 25% thicker walls compared to OEM manifolds, significantly increasing rigidity and resistance to cracking.
• Durable cast ductile iron construction designed to withstand high temperatures and repeated thermal cycling.
• Direct bolt-on fitment to the factory Y-pipe, ensuring a straightforward installation process without the need for modifications.
• Includes all necessary manifold mounting hardware for a hassle-free upgrade.

Construction & Design

The BladeRunner manifold is crafted from premium ductile iron, a material known for its superior strength and thermal durability compared to standard cast iron. This robust construction helps prevent common issues such as cracking and warping that can occur with prolonged exposure to high exhaust temperatures.

Its 25% thicker wall design enhances structural integrity, providing a more rigid and reliable manifold that maintains performance over time. Precision port machining ensures perfect alignment with factory gaskets, maximizing exhaust gas flow while maintaining a reliable seal and OEM-level fitment.

Performance & Sound

By increasing exhaust flow by approximately 15% over stock manifolds, the aFe BladeRunner manifold reduces backpressure, allowing the 5.7L V8 HEMI engine to breathe more freely. This improvement results in enhanced throttle response and a more responsive driving experience. While primarily focused on performance and durability, the manifold’s design may also subtly enhance the exhaust tone, delivering a cleaner and more aggressive sound characteristic of a well-tuned V8 engine.

Installation & Fitment

This manifold is designed as a direct replacement for the factory exhaust manifolds on 2019–2024 Ram 1500 models equipped with the 5.7L V8 HEMI engine. It bolts directly to the factory Y-pipe without requiring any additional modifications or custom fabrication. Installation is straightforward and supported by the included mounting hardware, making it accessible for both professional installers and experienced enthusiasts.

What's Included

• aFe BladeRunner Ported Ductile Iron Exhaust Manifold
• Manifold mounting hardware

Ideal For

This exhaust manifold is perfect for Ram 1500 owners who want to upgrade their truck’s exhaust system for improved performance and durability. It suits daily drivers seeking enhanced throttle response as well as enthusiasts who demand a more robust manifold capable of handling increased power and heat without cracking. The direct-fit, bolt-on design makes it an excellent choice for those looking for a hassle-free upgrade without custom modifications.

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.