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Ships within 48 hours · Estimated delivery Aug 16 - Aug 21
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Description
K&N Universal Air Filter 4in Flange / 5-3/8 in Base / 4-1/2in Top / 5in HeightExperience improved engine performance and protection with the K&N Universal Air Filter, designed for versatile applications and high efficiency. This premium air filter features a 4 inch flange, perfect for universal fitment across a range of vehicles. Its base measures 5 3 8 inches, while the top diameter is 4 1 2 inches, contributing to optimal air flow and filtration. With a height of 5 inches, this K&N air filter is engineered to boost your
Experience improved engine performance and protection with the K&N Universal Air Filter, designed for versatile applications and high efficiency. This premium air filter features a 4-inch flange, perfect for universal fitment across a range of vehicles. Its base measures 5 3/8 inches, while the top diameter is 4 1/2 inches, contributing to optimal air flow and filtration.With a height of 5 inches, this K&N air filter is engineered to boost your engine's breathing capabilities, promoting better throttle response and increased horsepower. Built by K&N Engineering, a trusted name in automotive performance, the RU-3600 model guarantees quality and durability for enthusiasts and professionals alike.
Whether you are upgrading your hot rod, classic car, or high-performance build, this universal filter allows for easy installation and maintenance. Enjoy the benefits of a reusable and washable filter element that helps protect your engine from harmful contaminants.
Choose the K&N Universal Air Filter for a trusted filtration solution that delivers both performance gains and reliable engine defense, available through Tuningsupply with fast shipping and no hidden fees across Europe.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 5
Awesome.
Material Type: Recycled Polyester, Color: Light Grey Heather, Size: X-Large
Fleece jacket is nothing short of awesome. I picked up a few over the years and always been pleased with them. Worn to work, for casual wear, And now that i'm retired just around the house to keep warm. They wear well, Wash well, Hold their shape stitching and zippers. Watching their price I scored this win for twelve dollars and sixty cents. They lend themselves well to layering as well. A real value in this day and age. Very true to size very comfortable.
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Reviewed in the United States on February 5, 2026
★★★★★ 5
So Soft and Warm
Material Type: Recycled Polyester, Color: Black, Size: Small
Great quality fleece for the price. It’s soft, warm, and fits true to size without feeling bulky. The quarter-zip design makes it easy to layer, and it looks nice enough for everyday wear. I’d definitely buy this again.
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Reviewed in the United States on January 21, 2026
★★★★★ 5
Good Value!
Material Type: Recycled Polyester, Color: Blue Heather, Size: XX-Large
I bought one of these jackets a few years ago it is fairly thick and is great for outdoor wear. This new one is thinner material by quite a bit, but still well made. I like the zippered pockets. It is fuzzy and comfortable. Might even buy a third one in a different color!
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Reviewed in the United States on January 23, 2026
★★★★★ 3
Sizing too small
Material Type: Recycled Polyester, Color: Oatmeal Heather, Size: Medium
Warm and comfortable.
BUT, the sizing is off. I ordered a medium , but it fit like a small:definitely order one size larger than you usually wear.
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Quality with a perfect fit!
Material Type: Recycled Polyester, Color: Forest Green, Size: X-Large
This has a nice weight to it and fits my husband perfectly and the length on the arms are prefect. I bought my husband a Lands End fleece and found that I liked this a lot better! The Land's End fleece was nice, but the sleeves are way too long! This was a much better price and will be back for more! Also has a great color assortment.
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Reviewed in the United States on December 2, 2025