aFe Large Bore-HD DPF-Back Exhaust System

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

Part #: 49-42065-P

Overview

The aFe Large Bore-HD 3-inch 409 stainless steel DPF-back exhaust system is engineered specifically for Ram 1500 and Ram 1500 Classic models equipped with the 3.0L EcoDiesel V6 engine from 2011 through 2024. This system replaces the factory DPF-back section to enhance exhaust flow while maintaining a precise, factory-like fit and finish. It is designed for diesel truck enthusiasts who want to improve performance, durability, and exhaust tone without compromising reliability or requiring extensive modifications.

By optimizing exhaust flow and reducing exhaust gas temperatures, this exhaust system helps maximize horsepower and torque output. It offers a refined, deeper exhaust note that complements the natural sound of the EcoDiesel engine, making it an excellent upgrade for daily drivers, towing, and off-road applications.

Key Features

Built to deliver superior flow and long-lasting performance, the aFe Large Bore-HD DPF-back exhaust system includes:

• Mandrel-bent stainless steel tubing ranging from 3" to 3-1/2" for optimized exhaust flow and minimal turbulence
• OE-style bayonet hangers that secure the exhaust during high vibration and heat conditions, ensuring a stable, factory-like fit
• 5-inch diameter polished 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 appearance
• Utilizes all factory mounting locations for hassle-free installation without custom brackets or welding
• High-quality band clamp included for secure connections and leak-free sealing
• Designed specifically for Ram 1500 and Ram 1500 Classic Crew Cab and Quad Cab models with various bed lengths and wheelbases
• Constructed from durable 409 stainless steel for corrosion resistance and long service life

Construction & Design

This exhaust system is crafted from premium 409 stainless steel tubing, known for its excellent corrosion resistance and durability under harsh conditions. The tubing is mandrel-bent to maintain a consistent diameter throughout bends, ensuring smooth exhaust flow and reducing backpressure. The system’s OE-style bayonet hangers securely hold the pipe in place, preventing movement and wear over time even under the high heat and vibration typical of diesel engines.

The polished 5-inch slash-cut tip not only adds a sleek, aggressive look but also features intercooling vents that help lower exhaust gas temperatures at the outlet. This contributes to improved thermal management and extends the longevity of exhaust components.

Performance & Sound

By increasing exhaust flow with larger diameter tubing and smooth transition bends, this DPF-back system improves horsepower and torque output while lowering exhaust gas temperatures (EGTs). Reduced EGTs contribute to better engine efficiency and longevity. The exhaust note is enhanced with a refined, deeper tone that complements the diesel engine’s natural sound without being overly loud or droning, providing an enjoyable driving experience.

Installation & Fitment

The aFe Large Bore-HD DPF-back exhaust system is designed for a direct fit using factory mounting points, making installation straightforward and minimizing the need for additional modifications. Installation requires cutting the exhaust pipe behind the Diesel Particulate Filter (DPF) unit to properly fit the system. The included high-quality band clamp and OE-style bayonet hangers ensure a secure, leak-free fit that maintains factory stability and alignment.

This system fits the following Ram 1500 and Ram 1500 Classic models:

• Crew Cab with 5'7" Bed (140" Wheelbase)
• Crew Cab with 6'4" Bed (149" Wheelbase)
• Quad Cab with 6'4" Bed (140" Wheelbase)
• Specific trims including Big Horn, HFE, Laramie, Laramie Limited, Laramie Longhorn, Limited, Lone Star, Outdoorsman, SLT, Sport, Tradesman, Classic Laramie, and Classic SLT from 2011 to 2024

What's Included

• Large Bore-HD 3" to 3-1/2" mandrel-bent stainless steel DPF-back exhaust pipe
• 5" diameter polished stainless steel slash-cut intercooler tip with laser-cut aFe POWER badge
• OE-style bayonet hangers and hanger bushings
• High-quality band clamp for secure connection
• Installation hardware and instructions

Ideal For

This exhaust system is ideal for Ram 1500 and Ram 1500 Classic owners seeking to enhance their truck’s diesel performance and sound while maintaining a clean, factory-quality installation. It suits enthusiasts looking for improved horsepower, torque, and thermal management without sacrificing durability or requiring complex modifications. Perfect for daily driving, towing, and off-road use where reliability and performance are paramount.

Emissions Note

This product does not require a CARB Executive Order (EO) number. It is designed to meet emissions requirements without compromising performance, but customers should verify local regulations 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.