aFe Atlas DPF-Back Exhaust System

2013–2018 RAM 2500/3500 6.7L

Part #: 49-02039-B

Overview

The aFe Atlas 5" Aluminized Steel DPF-Back Exhaust with Black Tip is engineered specifically for the 2013–2018 RAM 2500 and 3500 models equipped with the 6.7L engine. Designed to replace the factory exhaust from the Diesel Particulate Filter (DPF) back, this system offers a direct-fit upgrade that enhances your truck’s performance and sound without compromising reliability or durability.

Ideal for diesel truck owners seeking improved exhaust flow and a more aggressive exhaust note, the Atlas DPF-Back exhaust delivers a balance of power gains, reduced exhaust gas temperatures, and a clean, professional appearance with its sleek black tip finish.

Key Features

This exhaust system combines quality materials and thoughtful engineering to provide a superior upgrade for your RAM diesel truck:

• Constructed from 5-inch mandrel-bent aluminized steel tubing for durability and corrosion resistance
• Smooth transition bends reduce turbulence, optimizing exhaust flow for increased horsepower and torque
• Utilizes high-quality band clamps and OE-style bayonet hangers for secure and vibration-free mounting
• Maintains all factory mounting locations for a hassle-free, bolt-on installation
• Features a stylish black exhaust tip that complements the aggressive look of your truck
• Designed and manufactured in aFe’s Corona, California facility, ensuring strict quality control
• DPF-back design preserves factory emissions components while enhancing performance

Construction & Design

The Atlas exhaust system is built from aluminized steel, chosen for its excellent resistance to rust and corrosion, especially important in harsh road and weather conditions. The 5-inch diameter tubing is mandrel-bent to maintain consistent internal diameter through bends, preventing flow restrictions and maximizing exhaust gas velocity.

Every joint and connection is engineered to fit precisely using OE-style bayonet hangers and premium band clamps, ensuring a secure fit that minimizes rattles and vibrations. The black tip is finished with a durable coating that resists discoloration and wear, adding a refined touch to your truck’s rear appearance.

Performance & Sound

By improving exhaust flow and reducing backpressure, the Atlas DPF-Back exhaust helps your 6.7L Cummins engine breathe more efficiently. This results in noticeable gains in horsepower and torque, as well as lower exhaust gas temperatures (EGTs), which contribute to engine longevity and reliability.

The exhaust note is enhanced to deliver a deeper, more aggressive sound without being overly loud or drone-prone, providing an enjoyable driving experience whether on the highway or off-road.

Installation & Fitment

This exhaust system is designed for a direct bolt-on installation using all factory mounting points, making the upgrade straightforward and quick. No cutting, welding, or additional modifications are required, allowing you to maintain the integrity of your truck’s original exhaust layout.

Compatible exclusively with 2013 through 2018 RAM 2500 and 3500 models equipped with the 6.7L Cummins engine, the Atlas DPF-Back exhaust ensures a perfect fit and reliable performance.

What's Included

• 5" mandrel-bent aluminized steel DPF-back exhaust pipe
• Black coated exhaust tip
• High-quality band clamps
• OE-style bayonet hangers
• Installation hardware and instructions

Ideal For

This exhaust system is perfect for RAM 2500 and 3500 diesel truck owners who want to improve their vehicle’s performance and sound while retaining factory emissions compliance. It suits daily drivers, work trucks, and enthusiasts looking for a reliable, durable exhaust upgrade that enhances both power and aesthetics.

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.