aFe Large Bore HD DPF-Back Exhaust System

2011–2024 Ram 1500 / Ram 1500 Classic 3.0L EcoDiesel V6

Part #: 49-42065-B

Overview

The aFe Large Bore HD 3-inch 409 stainless steel DPF-back exhaust system is specifically engineered for Ram 1500 and Ram 1500 Classic models equipped with the 3.0L EcoDiesel V6 engine from 2011 through 2024. Designed to replace the factory exhaust from the diesel particulate filter (DPF) back, this system improves exhaust flow and reduces exhaust gas temperatures while maintaining a direct-fit installation and durable construction.

Ideal for diesel truck enthusiasts seeking enhanced performance, improved thermal management, and a refined aggressive appearance, the aFe Large Bore HD exhaust system delivers reliable upgrades without compromising factory mounting integrity. It balances performance gains with OEM-style fitment, making it an excellent choice for both daily drivers and performance-minded Ram owners.

Key Features

This DPF-back exhaust system incorporates advanced design elements and premium materials to optimize your Ram 1500’s exhaust flow and sound:

• Mandrel-bent 3" to 3-1/2" 409 stainless steel tubing for maximum flow and corrosion resistance
• OE-style bayonet hangers ensure a secure, vibration-resistant fit that maintains pipe location under high heat and stress
• Utilizes all factory mounting locations for hassle-free, bolt-on installation
• Massive 5" diameter black stainless steel slash-cut tip with intercooling vents to reduce exhaust gas temperatures at the tailpipe
• Laser-cut aFe POWER logo plate riveted on the tip for a distinctive, aggressive look
• Mandrel bends provide smooth transitions to minimize turbulence and backpressure
• High-quality band clamps included for secure connections
• Designed specifically for Ram 1500 Crew Cab and Quad Cab configurations with various bed lengths and wheelbases

Construction & Design

The aFe Large Bore HD exhaust system is constructed from durable 409 stainless steel tubing, known for its excellent resistance to corrosion and heat. The mandrel-bent tubing ensures smooth, unrestricted exhaust flow, which helps improve engine efficiency and longevity. The system’s OE-style bayonet hangers replicate factory mounting points, providing a stable and secure fit that resists movement and wear over time.

The 5-inch black stainless steel slash-cut tip features intercooling vents that not only enhance the truck’s appearance but also help dissipate heat, reducing exhaust gas temperatures at the outlet for improved thermal management and component longevity.

Performance & Sound

This DPF-back exhaust system is engineered to increase horsepower and torque by reducing exhaust backpressure and improving flow dynamics. The smooth mandrel bends and large bore tubing minimize turbulence, which lowers exhaust gas temperatures (EGTs) and contributes to better engine performance and efficiency. The intercooling vents on the tip further aid in reducing tailpipe temperatures.

The system delivers a refined yet aggressive exhaust note that enhances the driving experience without excessive drone or harshness, providing a balanced sound profile suitable for both daily driving and spirited performance.

Installation & Fitment

Installation is straightforward, utilizing all factory mounting locations and OE-style bayonet hangers for a secure, stable fit. This system is designed for Ram 1500 Crew Cab models with 5'7" and 6'4" beds, as well as Quad Cab models with 6'4" beds, covering wheelbases of 140" and 149". Please note that cutting behind the DPF unit is required for installation.

Included high-quality band clamps facilitate a tight seal and easy assembly, ensuring a hassle-free upgrade that maintains factory mounting integrity.

What's Included

• Large Bore HD 3" to 3-1/2" mandrel-bent 409 stainless steel DPF-back exhaust system
• 5" diameter black stainless steel slash-cut intercooling tip with laser-cut aFe POWER badge
• OE-style bayonet hangers and bushings
• High-quality band clamps for secure connections
• Installation hardware and instructions

Ideal For

This exhaust system is perfect for Ram 1500 EcoDiesel owners who want to enhance their truck’s performance and sound while maintaining a clean, factory-style installation. It suits daily drivers, towing enthusiasts, and diesel performance seekers who demand durability, improved exhaust flow, and a subtle yet aggressive appearance. The system’s design also benefits those looking to reduce exhaust gas temperatures for better engine health and efficiency.

Emissions Note

This product does not require a CARB Executive Order (EO) number. It is engineered and manufactured by aFe POWER in Corona, California, ensuring high-quality standards and compliance with applicable regulations.

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.