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  • aFe Magnum FLOW Pro DRY S Universal Replacement Air Filter F-4in. / B-6in. / T-4.5in. (Inv) / H-6in. - 21-91020
aFe Magnum FLOW Pro DRY S Universal Replacement Air Filter F-4in. / B-6in. / T-4.5in. (Inv) / H-6in. - 21-91020
aFe Magnum FLOW Pro DRY S Universal Replacement Air Filter F-4in. / B-6in. / T-4.5in. (Inv) / H-6in. - 21-91020
aFe Magnum FLOW Pro DRY S Universal Replacement Air Filter F-4in. / B-6in. / T-4.5in. (Inv) / H-6in. - 21-91020
aFe Magnum FLOW Pro DRY S Universal Replacement Air Filter F-4in. / B-6in. / T-4.5in. (Inv) / H-6in. - 21-91020
aFe Magnum FLOW Pro DRY S Universal Replacement Air Filter F-4in. / B-6in. / T-4.5in. (Inv) / H-6in. - 21-91020
aFe Magnum FLOW Pro DRY S Universal Replacement Air Filter F-4in. / B-6in. / T-4.5in. (Inv) / H-6in. - 21-91020
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Load image into Gallery viewer, aFe Magnum FLOW Pro DRY S Universal Replacement Air Filter F-4in. / B-6in. / T-4.5in. (Inv) / H-6in. - 21-91020
Load image into Gallery viewer, aFe Magnum FLOW Pro DRY S Universal Replacement Air Filter F-4in. / B-6in. / T-4.5in. (Inv) / H-6in. - 21-91020
Load image into Gallery viewer, aFe Magnum FLOW Pro DRY S Universal Replacement Air Filter F-4in. / B-6in. / T-4.5in. (Inv) / H-6in. - 21-91020
Load image into Gallery viewer, aFe Magnum FLOW Pro DRY S Universal Replacement Air Filter F-4in. / B-6in. / T-4.5in. (Inv) / H-6in. - 21-91020
Load image into Gallery viewer, aFe Magnum FLOW Pro DRY S Universal Replacement Air Filter F-4in. / B-6in. / T-4.5in. (Inv) / H-6in. - 21-91020
Load image into Gallery viewer, aFe Magnum FLOW Pro DRY S Universal Replacement Air Filter F-4in. / B-6in. / T-4.5in. (Inv) / H-6in. - 21-91020
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aFe Magnum FLOW Pro DRY S Universal Replacement Air Filter F-4in. / B-6in. / T-4.5in. (Inv) / H-6in. - 21-91020

Air Filters Air Filters - Universal Fit
aFe
afe21-91020
Backordered
September 9, 2026
Not CARB compliant. Not legal for sale or use in California on emissions-controlled vehicles.
$76.00
With three 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. This filter has a 99.2% filter efficiency. Features & Benefits Evenly Spaced Pleats Provide Excellent Dust Holding Capacity Three layers of progressively finer mesh synthetic media Constructed with 100% polyurethane on top and bottom Washable And Reusable For Multiple Cleaning Cycles Pliable Polyurethane Flange w/Integrated Bump Non-Oiled Media For Maximum Convenience 2 Year Limited Warranty
aFe Magnum FLOW Pro 5R Replacement Air Filter F-(7 X 4.75) / B-(9 X 7) / T-(7.25 X 5) (Inv) / H-9in. - 24-91123
aFe Magnum FLOW Pro 5R Replacement Air Filter F-(7 X 4.75) / B-(9 X 7) / T-(7.25 X 5) (Inv) / H-9in. - 24-91123
$97.00
aFe Magnum FLOW Pro DRY S Replacement Air Filter F-(7X4.75) / B-(9X7) / T-(7.25 X 5) (Inv) / H-9in. - 21-91123
aFe Magnum FLOW Pro DRY S Replacement Air Filter F-(7X4.75) / B-(9X7) / T-(7.25 X 5) (Inv) / H-9in. - 21-91123
$104.00
aFe Magnum FLOW Pro DRY S Universal Replacement Air Filter F-4in. / B-6in. / T-4.5in. (Inv) / H-6in. - 21-91020
SKU: afe21-91020
Product Details

Everything You Need To Know

Review product information, shipping and returns, and price-match details before you order.

Product Info

With three 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. This filter has a 99.2% filter efficiency.

Features & Benefits

  • Evenly Spaced Pleats Provide Excellent Dust Holding Capacity
  • Three layers of progressively finer mesh synthetic media
  • Constructed with 100% polyurethane on top and bottom
  • Washable And Reusable For Multiple Cleaning Cycles
  • Pliable Polyurethane Flange w/Integrated Bump
  • Non-Oiled Media For Maximum Convenience
  • 2 Year Limited Warranty
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Special order and out of stock items are product-specific and lead times can vary. Please e-mail us if you are looking for an ETA / Lead Time on a specific product. Special order orders are subject to cancellation if the vendor cannot provide any ETA.

Returns Policy

To start the return process, please e-mail sales@allianceracing.com

Include the following:
Subject "Return for Order#"
Order Number
Part Number
Reason

Returns are eligible for up to 14 days from delivery of items. Accepted refunds can take up to 7-10 business days to process. All refunds are subject to a 25% restocking fee, if opened. Customer may be responsible for return shipping. If 14 days have gone by since your item was delivered, unfortunately we can’t guarantee you a refund or exchange. We reserve the right to deny any return request, based on provided information.

Alliance Racing is not responsible for ensuring part fitment. It is the responsibility of the purchaser to ensure the parts being ordered are the correct fitment for the vehicle intended. Alliance Racing will not accept any returns for incorrect fitment after product is opened.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

Shipping

To return your product, mail your product to:
Alliance Racing LLC
8810 Twin Lakes Blvd
Tampa, FL 33614

In many cases, you will be responsible for shipping costs to return your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping will be deducted from your refund.

Depending on your location, the time it may take for your exchanged product to reach you may vary.

If you are shipping an item over $100, you should consider using a trackable shipping service and/or purchasing Shipping Insurance.

To initiate a price match, please e-mail sales@allianceracing.com with the product information (SKU, URL, & Part Name) and a link to the competitors product page for us to validate the price match eligibility.

Please note that there are cases when we cannot offer a price match, but we will do everything in our power to try to match it. Some manufacturers have Pricing Policies that we have to adhere to.

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