aFe Catalytic Converter (Front)

2009–2018 Ram 1500 5.7L Hemi

Part #: 47-42001

Overview

The aFe Catalytic Converter (Front) is a direct-fit replacement designed specifically for the 2009 to 2018 Ram 1500 equipped with the 5.7L Hemi engine. Engineered to meet EPA emissions standards, this catalytic converter ensures your vehicle remains compliant while restoring optimal exhaust flow. Ideal for enthusiasts and daily drivers alike, it offers a reliable solution for replacing a damaged or failing factory converter without sacrificing performance or durability.

Constructed with precision and durability in mind, this catalytic converter maintains the factory oxygen sensor locations, allowing for seamless integration with your vehicle’s existing emissions system. Whether you’re addressing a check engine light or upgrading your exhaust system, this aFe catalytic converter delivers a bolt-on installation with long-lasting performance.

Key Features

Designed to provide a balance of emissions compliance and enhanced exhaust flow, the aFe Catalytic Converter offers several advanced features:

• Constructed from 2-1/2" to 3" mandrel-bent 409 stainless steel tubing for superior strength and corrosion resistance
• EPA compliant catalytic converter core for legal emissions performance (not CARB compliant)
• Retains factory oxygen sensor locations for easy plug-and-play installation
• Integrated mitered merge collector reduces exhaust turbulence and increases velocity
• 100% MIG-welded construction ensures maximum durability and leak-free operation
• Computer-aided design guarantees precise fitment and optimal exhaust flow dynamics
• Direct bolt-on replacement for hassle-free installation without modifications

Construction & Design

The aFe catalytic converter is crafted from high-grade 409 stainless steel tubing, mandrel-bent between 2-1/2" and 3" diameters to maintain smooth exhaust flow and resist cracking or corrosion over time. The use of 100% MIG welding throughout the assembly enhances structural integrity, ensuring a robust and long-lasting component capable of withstanding the rigors of daily driving and performance use.

Its integrated mitered merge collector is engineered to minimize exhaust turbulence, promoting a more efficient flow path that can contribute to improved horsepower, torque, and throttle response. The entire unit is designed using advanced computer-aided techniques to ensure a perfect fit for the Ram 1500 5.7L Hemi, preserving factory sensor placements and mounting points.

Installation & Fitment

This catalytic converter is a direct replacement for the front catalytic converter on 2009–2018 Ram 1500 trucks with the 5.7L Hemi engine. Installation is straightforward and requires no cutting, welding, or modifications to existing exhaust components. The unit retains factory oxygen sensor bungs, allowing you to reuse your original sensors without additional adapters or wiring changes.

Designed for a bolt-on, go installation, this aFe catalytic converter is ideal for technicians and DIY enthusiasts seeking a reliable and compliant replacement part that fits precisely and performs consistently.

What's Included

• One aFe front catalytic converter assembly (part #47-42001)
• Pre-installed oxygen sensor bungs matching factory locations
• Installation hardware not typically required but may be sourced separately

Ideal For

This catalytic converter is perfect for Ram 1500 5.7L Hemi owners who need to replace a damaged or failing front catalytic converter with a high-quality, EPA-compliant component. It suits daily drivers, performance enthusiasts, and anyone seeking to maintain emissions compliance while optimizing exhaust flow and durability.

Emissions Note

This product is EPA compliant but is not legal for sale or use on vehicles certified for use in California or other states with CARB regulations. Replacement of catalytic converters is permitted only under specific conditions such as a missing converter, a failed state or local emissions inspection, or vehicles over five years old or with more than 50,000 miles that require documented replacement. Please consult your local authorities for compliance details before installation.

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.