Sinister Diesel Cold Air Intake – 5.9L Cummins
Fits 2004.5–2007 Dodge Ram 2500 & 3500 with 5.9L Cummins Diesel
CARB EO # Pending
Currently not for sale in the state of California
Key Features
- Precision CNC mandrel-bent aluminum tubing for smooth airflow and durability
- Oversized, reusable cotton filter media – washable and built to last
- Improves throttle response, turbo spool-up, horsepower, and torque
- Perfect upgrade for daily driving, towing, or race day use
- Finished in Sinister Blue powder coat for corrosion resistance and custom style
- Easy drop-in installation with basic hand tools
- Backed by a 2 Year Warranty
Reasons to Upgrade
- Factory air intake systems are restrictive and limit performance
- Unlocks hidden horsepower and torque by increasing airflow
- Reduces turbo lag for faster spool-up and more responsive acceleration
- Increases fuel efficiency by helping the engine breathe easier
- Produces a more aggressive engine sound under throttle
- Washable filter saves money compared to disposable factory filters
Product Description
The Sinister Diesel Cold Air Intake for the 2004.5–2007 5.9L Cummins is one of the most effective upgrades you can make to your Ram 2500 or 3500. Factory intake systems choke airflow, robbing your engine of performance. Our intake solves that with CNC mandrel-bent aluminum tubing and an oversized, high-flow cotton filter designed to deliver maximum airflow to your turbo. The result is improved horsepower, torque, throttle response, and turbo spool-up—all while enhancing efficiency whether you’re towing heavy, daily driving, or racing. Finished in Sinister Blue, this intake doesn’t just perform, it looks great under the hood.
Why Buy From Sinister Diesel?
Since 2009, Sinister Diesel has been the trusted source for Cummins, Powerstroke, and Duramax upgrades. Every intake is engineered in-house, tested in real-world conditions, and backed by our 2 Year Warranty. When you buy Sinister, you’re getting proven performance, premium materials, and unmatched reliability.
What’s Included
- (1) CNC Mandrel-Bent Aluminum Intake Tube
- (1) Reusable Cotton Media Filter
Installation Hardware
Click Here for Pre-Filter
FAQs:
Q: I know it is stronger and looks better, but doesn't aluminum conduct more heat than plastic?
A: On a technical standpoint, aluminum would be a little more subject to the heat because it is metal, but, it is thin walled tubing, and would also dissipate the heat much faster as air is moving. The issue with a plastic intake, while it takes just as much time to heat up, it takes a considerable amount more time to dissipate that heat build up, also known as heat soak. We could easily out source our intakes like most other companies, but instead we choose to spend more time and effort to make these out of a much better material, in house with our own welders and materials. We have been testing and running these for quite some time, and have out performed every other intake we have put it up against.
