You didnt say that I would need a reducer! I purchased and has to also go get a reducer
"You didnt say that I would need a reducer! I purchased and has to also go get a reducer"
Cummins
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SKU #: AFE-21-90021
MPN #: 21-90021
AFE Power Pro Dry S Replacement Filter (Universal Fitment)
Description
With two layers of progressively finer mesh synthetic media between 100% polyurethane top and base, this high flow, "oil-free" conical performance filter provides maximum convenience and easy maintenance with excellent airflow. Washable and reusable for multiple cleanings, the tall open evenly spaced pleats provide excellent dust holding capacity for longer service cycle between cleanings. Pliable polyurethane flange with integrated bumps insures tight, no leak seal over the life of the filter.
IMPORTANT NOTE:
This filter is universal and is not designed to exactly fit any certain application. This filter is used for custom build applications. If Seal is broken on this product, this item would not be eligible for return.
FREQUENTLY ASKED QUESTIONS:
Q: Will this filter fit my AFE Intake?
A: Most likely not. This is a UNIVERSAL fit filter. Many people need a filter with these dimensions when they are making their own intake or have custom parts on their truck.
Q: If this does not fit my truck, can I return it?
A: Yes, if it meets these qualifications: Plastic wrap unbroken, new in box, and within 30 days of order. You will be responsible for return shipping.
Q: How do I know if this will fit my truck?
A: If you are not sure, or any of the information on this listing does not make it clear, PLEASE call before ordering.
Enter your zip and we'll see if installation is available.
- Request quotes from local installers at checkout
- Compare options and choose the best fit for your install
About WrenchConnected
WrenchConnected is an independent installation marketplace operating in partnership with Diesel Power Products.
How it works
After checkout, we route your vehicle info and part SKU to verified installation shops near you. Local installers review the job and submit competitive bids; you pick the shop you want based on price, reviews, and availability. Your name and email stay private until you select an installer.
Pricing
You pay for the bid from your preferred shop. The full amount is shown before you confirm — installers cannot add charges without your written consent. Payments are processed securely by Stripe.
Your privacy
During bidding, shops see only your service ZIP code, vehicle year/make/model, and the part SKU — not your name, email, or address. Only the shop you select receives your contact details after payment. We never sell your personal information.
More detail at wrenchconnected.com.
FILTER DIMENSIONS:
- 6" Flange Diameter x 9" Base Diameter x 7" Top Diameter x 9" Overall Height
About AFE
AFE POWER PERFORMANCE PARTS AND ACCESSORIES
Since its founding in 1999, AFE Power (Advanced Flow Engineering) has been a leader in diesel performance. Built to improve airflow, fuel efficiency, and overall vehicle power, AFE Power products are engineered to handle the demands of diesel enthusiasts and professionals alike.
From AFE cold air intakes to high-performance exhausts, AFE Power offers a complete lineup of parts to boost your truck’s performance. Whether you’re running a Cummins, Powerstroke, or Duramax engine, Diesel Power Products has a full range of AFE Power parts to maximize your vehicle’s potential.
AFE COLD AIR INTAKE SYSTEMS FOR MAXIMUM AIRFLOWOne of AFE Power’s best-known products is the AFE cold air intake system, designed to increase airflow and improve combustion efficiency. With options for both open and closed systems, AFE cold air intakes are built to optimize horsepower and throttle response. For those aiming to push their trucks to the limit, these intakes provide the airflow needed for consistent, powerful performance.
AFE FILTERS FOR DIESEL ENGINESAFE filters are made with various filter media to suit different driving environments. Choose from the Pro 5R, Pro 10R, Pro-GUARD 7, and Pro DRY S filters to achieve the right balance of airflow and filtration. Engineered with multiple layers of protection, AFE filters capture finer debris while maintaining excellent airflow, extending your engine's life and efficiency.
AFE POWER EXHAUST SYSTEMS FOR ENHANCED PERFORMANCEUpgrading to an AFE Power exhaust system reduces backpressure and increases exhaust flow, allowing for improved performance and fuel efficiency. Built with premium materials, these exhausts provide a deeper sound without compromising factory emissions. AFE Power’s exhaust options help you achieve a cleaner, more efficient burn while adding an aggressive tone to your truck’s performance.
ABOUT ADVANCED FLOW ENGINEERING (AFE)Headquartered in Corona, California, Advanced Flow Engineering (AFE) is known for its high-tech, in-house manufacturing and testing facilities, which include capabilities like CNC machining, CAD design, dyno testing, and more. With a commitment to quality and innovation, AFE Power continues to push the boundaries in diesel performance parts, delivering products that meet the needs of today’s diesel enthusiasts.
SHOP AFE PARTS AT DIESEL POWER PRODUCTSDiesel Power Products is proud to offer a comprehensive selection of AFE parts for diesel trucks. From cold air intakes and filters to exhaust systems and tuners, we carry everything you need to upgrade your diesel truck with high-performance AFE Power products. Our experts are here to help you find the right parts for your specific needs.
Video
DIESEL TALK | AFE POWER PRO DRY S REPLACEMENT FILTER!
This high-flow, oil-free conical air filter is built for strong airflow, easy maintenance, and long-term durability. It uses two layers of progressively finer synthetic media between a 100 percent polyurethane top and base, delivering excellent filtration without the need for oiling.
Tall, evenly spaced pleats increase dust-holding capacity for longer service intervals, and the filter is fully washable and reusable for multiple cleaning cycles. A pliable polyurethane flange with integrated sealing bumps helps maintain a tight, leak-free seal over time.
This is a universal filter designed for custom intake setups, not a direct replacement for a specific vehicle. It’s ideal for custom builds where specific dimensions are required to complete the system. If you are unsure about sizing for your application, it’s always best to confirm measurements before ordering.
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Overall rating: 3.5 / 5 from 12 reviews.
AI Generated Review Summary
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Review highlights
Reviews
Disappointed
"Bought this product thinking it would fit my 6. 0 (could have sworn it said it would in description) but after opening it and inspecting it I realized it was nowhere near the right fit. However I could not return it because the original packaging was opened. Now it just sits on the shelf in my shop hoping to find a use one day."
Far from correct fit for the year models
"Doesn’t fit the afe cold air intake installed on my 01 5. 9 Cummins the diameter is an 1. 5” wider than the original and yes my original filter is an afe filter"
Air filter
"The second one in 5 yrs. Good product. Great delivery."
Does not fit
"Far from universal."
Not "Universal"
"Seeing it listed as universal fitment I assumed it would fit most aftermarket, especially afe, cold air intakes. If I would have looked closely I would have noticed it is a 6 inch inlet which doesn't come close to fitting afe aftermarket intake systems. I thought for sure I would have no problem returning it but then I learned of the strict return policy. . . yes, I ordered the part. Yes it is exactly as specified in the listing. I just wish thos wasn't marketed as universal when it's the exact opposite and the return policy really needs to be a little more generous when it comes to simple/ bolt on items."
Great product
"Worked as described"
Fit good
"Got it pretty quick and it fit pretty good and made quick install"
Great product and perfect fitment.
"Great product and perfect fitment. Fantastic communication from Diesel Power Products about availability and shipping status"
Flows great
"Make sure you have a plan to hook up the 6” outlet on this thing. It flows some air, really woke up our 99 Cummins."
Q&A
- Will this filter fit on just the turbo on a 2009 6.7 cummins
- If you are looking to attach the filter directly to the compressor inlet it would not install like that. The flange is much to large in diameter. -Sands
- SKU #: AFE-21-90021 AFE POWER PRO DRY S REPLACEMENT FILTER will this filter fit into the PART AFE STAGE 2 COLD AIR INTAKE SYSTEM TYPE XP. the set up will be used on a 2002 ford f250 7.3L. ive read that dry filters are better for some intakes. thanks
- Yes, you can run the Pro Dry S filter in the AFE Stage 2 XP. -Marcus