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  • K&N Filter Universal Rubber Filter 4 inch Flange 5 3/8 inch Base 4 3/8 inch Top 7 inch Height
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K&N Filter Universal Rubber Filter 4 inch Flange 5 3/8 inch Base 4 3/8 inch Top 7 inch Height

K&N Engineering
KNNRU-2590
In stock
Air Filters - Universal Fit
$68.99
K&N Universal Rubber Air Filter - 4" Flange, 7" Height | High-Flow Performance Shop the K&N Universal Clamp-On Rubber Air Filter (4" Flange, 5 3/8"...
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$68.99
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K&N Filter Universal Rubber Filter 4 inch Flange 5 3/8 inch Base 4 3/8 inch Top 7 inch Height
Description

K&N Universal Rubber Air Filter - 4" Flange, 7" Height | High-Flow Performance

Shop the K&N Universal Clamp-On Rubber Air Filter (4" Flange, 5 3/8" Base, 4 3/8" Top, 7" Height). Designed to increase horsepower with washable, reusable high-flow filtration.

The K&N Universal Clamp-On Air Filter is engineered to optimize engine airflow while offering top-tier protection against harmful dirt and debris. Featuring a 4-inch inside diameter flange, a 5 3/8-inch base, a 4 3/8-inch top, and a 7-inch overall height, this round tapered filter fits a wide variety of custom air intake setups.

Constructed with multiple layers of premium oiled cotton gauze media, it delivers low restriction to boost engine horsepower and acceleration. Its ultra-durable, pliable rubber base and flange absorb engine vibration and stretch up to 1/16 inch to allow a snug, secure fit on custom tubing. Unlike disposable paper filters, this K&N filter is fully washable and reusable, providing long-lasting performance and value.

Best Uses

  1. Custom Engine Swaps & Cold Air Intakes: Ideal for custom automotive setups requiring a direct 4-inch intake tube attachment.
  2. Motorsports & Track Racing: Provides maximum airflow for high-rpm engines in race cars, dragsters, and track vehicles.
  3. Off-Road & Recreational Vehicles: Great for buggies, snowmobiles, or custom sand rails needing reliable dust filtration.
  4. Industrial & Custom Equipment: Works well on generators, tractors, and custom machinery with 4" intake pipes.

Features

  1. Precision Tapered Dimensions: Built with a 4" inner flange diameter, 5 3/8" base, 4 3/8" top, and 7" filter height for tight engine bays.
  2. Pliable Rubber Flange: Made with an ultra-strong, flexible rubber flange that absorbs engine vibrations and stretches up to 1/16" (1.5 mm) for exact fitment.
  3. High-Flow Oiled Cotton Media: Utilizes layered, pre-oiled cotton gauze to maximize airflow while catching microscopic contaminants.
  4. Clamp-On Design: Features a secure, single-flange design that easily clamps directly onto metal or composite intake tubing.
  5. Washable & Reusable Media: Engineered to be cleaned and re-oiled repeatedly using a K&N filter care kit.

Benefits

  1. Increased Horsepower & Acceleration: Reduces air intake restriction to help your engine draw in more oxygen for increased power.
  2. Cost-Effective Long-Term Value: Washable and reusable design eliminates the need to constantly buy replacement paper filters.
  3. Exceptional Engine Protection: Multi-layer filtration media captures harmful dirt, dust, and particulate matter up to 99% efficiency.
  4. Vibration-Resistant Fit: Flexible molded rubber base isolates intake components from harsh motor vibrations.
  5. Eco-Friendly Choice: Helps reduce landfill waste by replacing single-use disposable filters over the vehicle's lifespan.
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2. Please see our International Orders page for orders shipping outside the US. We have worked with our shipping companies and integrated their shipping prices with our website for customer comfort.

3.For a specific delivery ETA based on the exact item(s) you want to purchase, please call us at (248) 832-2444 or message us via Chat before placing an order.

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1. Returned products must be in new, unused condition and include the original box and/or packaging with all tags included.

2. Once your return is received and inspected by MotoKarMax (usually within 48-72 hours of receiving), your refund will be processed and a credit will be applied to your credit card or original payment method. Please note that depending on your credit card company, it may take an additional 2-10 business days after your credit is applied for it to be posted to your account.

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