Have Questions?
Professional-grade parts used trackside.
Expert help during business hours.
Encrypted checkout & trusted payments.
Orders ship quickly from regional warehouses.
Upgrade your Dodge Ram 2500 or 3500 with the Injen Evolution Cold Air Intake System designed specifically for 2003-2007 models equipped with the 5.9L Cummins engine. Crafted in the USA from durable cross-linked high-density polyethylene, this intake system offers a robust construction that withstands extreme conditions. The EVO8004 features a two-piece box design with an integrated boost plenum, ensuring maximum airflow and improved engine breathing. Its roto-molded housing and intake tube are precision-engineered in 3D to provide a seamless fit and optimal performance. The system includes a massive 360° SuperNano-Web dry air filter with deep pleats measuring over 1.25 inches, facilitating superior filtration and increased airflow. The filter is secured with Injen’s proprietary SHUR-LOCK mounting system, which guarantees a non-slip, airtight seal for consistent performance. Installation is straightforward, requiring no cutting or drilling, and the system is compatible with the stock calibration, making it a hassle-free upgrade. The EVO8004 is dyno-tested to deliver substantial power gains, with up to 25 horsepower and 62 lb-ft of torque, translating into noticeable acceleration and towing capacity improvements. It also features stainless steel hardware, reinforced silicone couplers, and an aggressive intake growl that enhances the vehicle’s underhood presence. Designed to maximize under-hood space, this intake system maintains an OE-like fit while elevating your truck’s performance and appearance. Backed by Injen’s Limited Lifetime Warranty and made in California, the EVO8004 is a reliable, high-performance upgrade for serious diesel enthusiasts seeking enhanced power, durability, and a distinctive sound.
Features:
Fitment:
2003 Dodge Ram 2500 Laramie
2003 Dodge Ram 2500 SLT
2003 Dodge Ram 2500 ST
2003 Dodge Ram 3500 Laramie
2003 Dodge Ram 3500 SLT
2003 Dodge Ram 3500 ST
2004 Dodge Ram 2500 SLT
2004 Dodge Ram 2500 ST
2004 Dodge Ram 3500 Laramie
2004 Dodge Ram 3500 SLT
2004 Dodge Ram 3500 ST
2005 Dodge Ram 2500 Laramie
2005 Dodge Ram 2500 SLT
2005 Dodge Ram 2500 ST
2005 Dodge Ram 3500 Laramie
2005 Dodge Ram 3500 SLT
2005 Dodge Ram 3500 ST
2006 Dodge Ram 2500 Laramie
2006 Dodge Ram 2500 SLT
2006 Dodge Ram 2500 Sport
2006 Dodge Ram 2500 ST
2006 Dodge Ram 2500 TRX4
2006 Dodge Ram 3500 Laramie
2006 Dodge Ram 3500 SLT
2006 Dodge Ram 3500 Sport
2006 Dodge Ram 3500 ST
2007 Dodge Ram 2500 Laramie
2007 Dodge Ram 2500 SLT
2007 Dodge Ram 2500 Sport
2007 Dodge Ram 2500 ST
2007 Dodge Ram 2500 TRX4
2007 Dodge Ram 3500 Laramie
2007 Dodge Ram 3500 SLT
2007 Dodge Ram 3500 Sport
2007 Dodge Ram 3500 ST
2007 Dodge Ram 3500 TRX4
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
