aFe Large Bore-HD Exhaust System

Ram 2500 / 3500 13-18 6.7L Diesel/6.4L/5.7L

Part #: 49-42039-P

Overview

The aFe Large Bore-HD 5" 409 Stainless Steel DPF-Back Exhaust with Polished Tip is engineered specifically for the 2013 to 2018 RAM 2500 and 3500 models equipped with the 6.7L engine. Designed to excel in the most demanding environments, this exhaust system enhances your truck’s performance by improving exhaust flow and reducing backpressure. Ideal for diesel enthusiasts seeking increased horsepower and torque without sacrificing durability or fitment, this exhaust delivers a powerful yet refined sound that complements the aggressive nature of your RAM.

Built to OEM standards, the system installs easily using factory mounting points, ensuring a hassle-free upgrade that maintains the integrity and reliability of your vehicle’s exhaust setup.

Key Features

This exhaust system combines advanced engineering with high-quality materials to provide a reliable and performance-oriented upgrade. Key features include:

• Mandrel bent 4-inch 409 stainless steel tubing for maximum exhaust flow and durability
• DPF-back design that retains factory mounting locations for a seamless fit
• High-quality OE-style flange and band clamps providing a complete 360-degree sealing surface
• Free-flowing 24-inch long muffler engineered to absorb high-pitched tones and produce a deep, powerful exhaust note
• OE-style bayonet hangers that secure the pipe during high vibration and heat conditions
• Polished stainless steel tip for a clean, aggressive appearance
• Reduces Exhaust Gas Temperatures (EGTs) to help protect engine components
• Increases horsepower and torque output by optimizing exhaust flow

Construction & Design

The aFe Large Bore-HD exhaust system is constructed from premium 409 stainless steel tubing, known for its excellent corrosion resistance and strength under extreme heat. The tubing is mandrel bent to maintain consistent diameter throughout bends, ensuring unrestricted exhaust flow and improved performance. The system features OE-style flanges and band clamps that guarantee a tight, leak-free seal, while the bayonet hangers replicate factory mounting points to maintain stability and prevent rattling or sagging over time.

The polished stainless steel tip not only enhances the visual appeal but also resists discoloration and corrosion, maintaining a showroom finish even after extended use.

Performance & Sound

This exhaust system is designed to unleash the full potential of your RAM 2500/3500’s 6.7L diesel engine. By reducing backpressure and improving exhaust flow, it increases horsepower and torque, allowing your truck to perform more efficiently under load. The 24-inch muffler is tuned to absorb unwanted high-frequency tones, resulting in a deep, aggressive exhaust note that commands attention without being overly loud or droning during highway cruising.

Installation & Fitment

The aFe Large Bore-HD exhaust system is engineered for direct bolt-on installation using all factory mounting locations. This ensures a secure fit and eliminates the need for modifications or custom fabrication. The OE-style bayonet hangers and factory-style clamps simplify the installation process, making it accessible for professional installers and experienced enthusiasts alike. Designed specifically for 2013–2018 RAM 2500 and 3500 models with the 6.7L engine, this exhaust system fits precisely without interfering with other components.

What's Included

• Mandrel bent 4-inch 409 stainless steel DPF-back exhaust piping
• 24-inch free-flowing muffler
• Polished stainless steel exhaust tip
• OE-style flange and band clamps
• OE-style bayonet hangers and mounting hardware
• Installation instructions

Ideal For

This exhaust system is perfect for RAM 2500 and 3500 owners who demand enhanced performance and sound from their 6.7L diesel trucks. Whether you use your truck for heavy towing, hauling, or daily driving, the aFe Large Bore-HD exhaust delivers improved power and torque while maintaining a refined exhaust tone. It is also an excellent choice for enthusiasts looking to upgrade their exhaust system with a durable, high-quality component that fits seamlessly and performs reliably in extreme conditions.

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.