Chevy Silverado 2500 HD / 3500 6.6L Turbocharged 2001-2005, Super Stock IRF Air Filter by aFe®. The Super Stock IRF Air Filter can increase airflow to your engine by 90%, with up to 65% greater dust holding capacity…without changing anything else in your air intake system! The unique inverted design of the IRF provides up to 76% more filter surface area, for increased airflow and dust holding ability. The IRF is by far the quickest and easiest way to give your engine more airflow and protection.
- Directly replaces factory air filter
- Up to 76% more filter surface area
- Improves airflow up to 90%
- Up to 65% greater dust holding capacity
- Improves engine performance
- Provides superior air filtration and engine protection
- Available with Pro GUARD 7, Pro 5R or Pro DRY S filter media
- Washable and reusable
- Extended service intervals
- Backed by a limited lifetime warranty
- Proudly made in the USA
Imagine being able to install a large, high-flow, conical performance air filter in your factory airbox. In effect, that's what happens when you install a Super Stock IRF air filter. Its unique inverted design maximizes the use of the available space inside the factory airbox, allowing the installation of a filter with up to 76% more surface area in the same location. Airflow is increased up to 90% and dust holding capacity is increased by up to 65% versus the stock factory flat panel air filter. But the shape of the IRF is only part of the story. It's available with your choice of aFe's 3 filter media types, the Pro 5R, the Pro GUARD 7 or the Pro DRY S.
The Pro 5R air filter was designed to provide the maximum airflow possible, to enable your engine to make the most horsepower and torque. But aFe didn't achieve this by ignoring engine protection. The Pro 5R outperforms most other cotton gauze air filters with a 98.6% efficiency rating. The increased airflow and high filtration capability are the result of the Pro 5R's construction. It's made of 5 layers of progressively finer medical-grade cotton gauze.
The Pro GUARD 7 air filter delivers increased airflow while providing the highest level of filtration efficiency available - 99.7%. The patented 7-layer progressive cotton/synthetic media in the Pro GUARD 7 consists of 5 layers of progressively finer medical grade cotton gauze, combined with 2 layers of non-woven synthetic polyester fabric with random porosity.
Competitors use constant size mesh gauze in their filters, which creates voids/openings that can allow dirt to pass through. As the progressively finer layers of gauze are stacked in the Pro 5R and Pro GUARD 7, the randomness of the openings increase, minimizing spaces with no filter media. Dust accumulates on multiple layers, increasing overall dust holding capacity and filtration efficiency.
The Pro DRY S filter combines high airflow and filtration efficiency with the convenience of oil-free maintenance. It contains 2 layers of randomly porous synthetic fabric, which allows approximately twice the airflow when compared to a typical stock air filter. The increased airflow results in more horsepower and torque, better throttle response and more miles per gallon. But this improved airflow and performance hasn't been gained at the expense of engine protection. The Pro DRY S has an excellent 99.2% filtration efficiency rating.
The pleats in all 3 filters are evenly spaced for greater dust holding capacity and the tips are rounded for better airflow. The sealing surface and supporting structures are made from 100% polyurethane, to withstand extreme engine temperatures.
Under normal driving conditions the Pro GUARD 7 air filter won't need servicing for 45,000 miles; neither the Pro 5R nor the Pro DRY S will need servicing for 25,000 to 30,000 miles. When service is required, the Pro 5R and Pro GUARD 7 can be washed, dried, re-oiled and put back in service. The Pro DRY S can simply be washed and dried and put back into service; no oiling is necessary. Each of these filters can be washed and reused repeatedly; you'll never have to buy another air filter, ever.
The Super Stock IRF air filter is backed by a limited lifetime warranty and it's made in the USA.
aFe® (Advanced Flow Engineering, Inc.) manufactures performance products for late model cars, light trucks and SUVs. The company was founded in 1999 with an initial concentration on high performance air filters. Since then, the company product line has broadened to include cold air intakes, fluid filters, exhaust systems, intake manifolds, intercoolers, programmers, differential covers, transmission pans and throttle body spacers. The team of engineers, machinists, production and sales people at aFe® have many years of experience in their respective positions, and together work to ensure they produce the best automotive products on the market.