Injen Evolution Cold Air Intake System

2003–2007 Dodge Ram 2500 / Ram 3500 5.9L Cummins Diesel

Part #: EVO8004

Overview

The Injen Evolution Cold Air Intake System is engineered specifically for Dodge Ram 2500 and Ram 3500 trucks equipped with the 5.9L Cummins diesel engine from 2003 to 2007. This advanced intake system is designed to optimize airflow and engine efficiency, delivering noticeable horsepower and torque gains without the need for aftermarket tuning. Ideal for diesel enthusiasts seeking a reliable and durable upgrade, the EVO8004 enhances throttle response and engine breathing while maintaining factory calibration and emissions compliance.

Manufactured in the USA, the Evolution Intake offers a seamless bolt-on solution that improves overall engine performance and provides an aggressive intake sound under acceleration, making it a perfect choice for daily drivers, towing enthusiasts, and performance-minded diesel owners.

Key Features

The Injen Evolution Intake system incorporates cutting-edge design and premium materials to maximize performance and reliability. Key features include:

• Dyno-tested gains of up to +25 horsepower and +62 lb-ft of torque
• Two-piece roto-molded housing with integrated boost plenum for enhanced air delivery
• Massive 360° SuperNano-Web dry air filter with deep pleats for superior filtration and airflow
• Smooth roto-molded induction tube engineered to reduce intake restriction
• SHUR-LOCK mounting system ensures a secure, non-slip air filter seal
• Durable cross-linked high-density polyethylene (XLPE) construction for heat and chemical resistance
• Stainless steel hardware and automotive-grade urethane couplers for corrosion resistance and longevity
• Direct bolt-on installation with no cutting or drilling required
• Compatible with stock engine calibration—no tuning necessary
• Produces an aggressive intake sound during acceleration

Construction & Design

The EVO8004 intake system is crafted from cross-linked high-density polyethylene (XLPE), a material renowned for its durability and resistance to heat and chemicals. The roto-molded housing and intake tube are precision-engineered using advanced 3D design technology to ensure an exact OE-quality fit and hassle-free installation.

The two-piece housing features an integrated boost plenum that optimizes airflow dynamics, while the SuperNano-Web dry air filter boasts deep pleats over 1.25 inches, maximizing filtration surface area without compromising airflow. All clamps, screws, and mounting hardware are made from stainless steel to prevent corrosion and maintain a secure fit over time. Automotive-grade urethane couplers provide flexibility and a tight seal, ensuring consistent performance under all driving conditions.

Performance & Sound

Tested on Injen’s in-house dynamometer, the Evolution Intake system delivers measurable power improvements, with gains of up to 25 horsepower and 62 lb-ft of torque. These enhancements translate into improved throttle response, better towing capability, and enhanced overall engine efficiency. Additionally, the intake produces a noticeable, aggressive growl during acceleration, adding an engaging auditory experience without excessive noise.

Installation & Fitment

The EVO8004 is designed for a straightforward, bolt-on installation that requires no cutting, drilling, or aftermarket tuning. It fits directly onto the stock intake path of 2003–2007 Dodge Ram 2500 and 3500 models equipped with the 5.9L Cummins diesel engine. The system utilizes the maximum available space under the hood to ensure optimal airflow and clearance, making installation quick and hassle-free for both professional installers and experienced DIY enthusiasts.

What's Included

• Roto-molded housing with integrated boost plenum
• Roto-molded intake tube
• 360° SuperNano-Web dry air filter (part # X-1125-BB)
• Stainless steel band clamps with protective liners
• Automotive-grade urethane couplers
• Stainless steel hardware and mounting screws
• Installation instructions

Ideal For

This intake system is ideal for Dodge Ram 2500 and 3500 owners who want to enhance their truck’s diesel engine performance without compromising reliability or requiring complex tuning. It suits daily drivers, towing enthusiasts, and diesel performance aficionados looking for a durable, high-quality intake that delivers real-world horsepower and torque improvements while maintaining factory emissions compliance.

Emissions Note

The Injen Evolution Intake system carries CARB Executive Order #D-476-9, ensuring compliance with California emissions regulations and making it legal for street use in states that follow CARB standards.

Injen is a performance intake and airflow brand best known for dyno-proven cold air intakes and intake systems built for enthusiast street and track builds. Their catalog spans intake kits, filters, and supporting components designed to increase airflow, sharpen throttle response, and add a more aggressive induction note.