aFe Atlas 5" Aluminized Steel DPF-Back Exhaust

2013–2018 RAM 2500 / 3500 6.7L Crew Cab

Part #: 49-02051-1B

Overview

The aFe Atlas 5" Aluminized Steel DPF-Back Exhaust is engineered specifically for the 2013 to 2018 RAM 2500 and 3500 models equipped with the 6.7L Cummins engine and Crew Cab configuration. Designed to replace the restrictive factory exhaust components from the Diesel Particulate Filter (DPF) back, this system enhances exhaust flow while maintaining a clean, OE-style appearance. It is an ideal upgrade for diesel truck owners seeking improved performance, durability, and a subtle yet aggressive exhaust tone without compromising reliability or fitment.

Built to optimize exhaust gas evacuation, this DPF-back exhaust reduces backpressure and supports better engine efficiency. It is perfect for enthusiasts who want to maximize their truck’s power potential while retaining a factory-like installation experience.

Key Features

The aFe Atlas DPF-Back Exhaust combines robust construction with thoughtful design to deliver lasting performance and ease of installation. Key features include:

• 5-inch aluminized steel tubing for enhanced durability and corrosion resistance
• 4-inch 409 stainless steel tubing in critical sections for smooth exhaust flow and longevity
• Large bore design with smooth mandrel bends to minimize restrictions and optimize gas flow
• OE-style band clamps and bayonet-style hangers for a secure, factory-like fitment
• Black powder-coated exhaust tip for a sleek, aggressive finish that resists rust and discoloration
• Direct bolt-on replacement for the factory DPF-back section, requiring no cutting or welding
• Compatible with stock emissions equipment to maintain compliance and reliability

Construction & Design

The exhaust system features a combination of aluminized steel and 409 stainless steel tubing, carefully selected for their corrosion resistance and strength under high-heat conditions. The aluminized steel provides excellent protection against rust and environmental damage, while the stainless steel sections ensure smooth exhaust flow and durability where it matters most. Mandrel-bent tubing preserves consistent diameter through bends, reducing turbulence and backpressure for improved engine breathing.

Attention to detail is evident in the use of OE-style band clamps and bayonet hangers, which allow for a clean, secure installation that aligns perfectly with factory mounting points. The black powder-coated tip not only adds a refined aesthetic but also protects against the elements, ensuring the exhaust maintains its appearance over time.

Installation & Fitment

This aFe Atlas DPF-Back Exhaust is designed as a direct bolt-on replacement for the factory DPF-back section on 2013–2018 RAM 2500 and 3500 6.7L Crew Cab trucks. The system installs easily using the included OE-style band clamps and bayonet hangers, requiring no cutting, welding, or modifications. This ensures a hassle-free upgrade that preserves factory fitment and alignment, making it accessible for both professional installers and experienced DIY enthusiasts.

What's Included

• 5" aluminized steel DPF-back exhaust assembly with 4" 409 stainless steel tubing
• OE-style band clamps for secure connections
• Bayonet-style hangers for factory-style mounting
• Black powder-coated exhaust tip
• Installation hardware and instructions

Ideal For

This exhaust system is ideal for RAM 2500 and 3500 owners who want to improve their truck’s exhaust flow and sound without sacrificing factory fitment or emissions compliance. It suits diesel enthusiasts looking for a durable, high-quality upgrade that enhances performance and provides a subtle, aggressive exhaust note. Perfect for daily drivers, work trucks, and those who tow or haul regularly, the aFe Atlas DPF-Back Exhaust balances reliability with enhanced driving experience.

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.