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  • K&N Round Tapered Universal Air Filter 4in Flange ID x 5.375 Base OD x 4in Top OD x 6.5in H
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K&N Round Tapered Universal Air Filter 4in Flange ID x 5.375 Base OD x 4in Top OD x 6.5in H

2 sold in last 8 hours
K&N Engineering
KNNRP-4980
In stock
Air Filters - Universal Fit
$167.99
K&N Universal Air Filter: 4" Flange, 6.5" Height | Washable Performance Boost horsepower with the K&N Round Tapered Air Filter. 4in flange ID, 6.5in height....
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$167.99
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K&N Round Tapered Universal Air Filter 4in Flange ID x 5.375 Base OD x 4in Top OD x 6.5in H
Description

  • K&N Universal Air Filter: 4" Flange, 6.5" Height | Washable Performance

Boost horsepower with the K&N Round Tapered Air Filter. 4in flange ID, 6.5in height. Washable, reusable, and designed for high-flow performance.

The K&N RU-2510 is a premium round tapered universal air filter designed for a wide range of automotive, industrial, and racing applications. It features a 4-inch (102mm) inside diameter flange, making it a perfect fit for custom intakes, cold air intake systems, or turbocharger inlets.

Constructed with K&N’s legendary oil-impregnated cotton media, this filter utilizes depth loading and "surface tension" to capture dirt particles without sacrificing airflow. Unlike disposable paper filters that restrict air as they get dirty, K&N’s pleated design provides a massive surface area to maintain high flow rates even in dusty conditions. The filter is finished with high-quality molded rubber flanges and a chrome top for a sleek, professional look under the hood.

Best Uses

  1. Custom Intake Systems: The ideal choice for DIY cold air intakes or short-ram setups.
  2. Forced Induction: Perfect for mounting directly onto turbocharger or supercharger inlets.
  3. Off-Road & Racing: Built to withstand high-vibration environments and heavy dust.
  4. Engine Swaps: A go-to solution for LS swaps or custom builds where space is specific.

Features

  1. High-Flow Cotton Media: Features 4–6 layers of premium cotton gauze treated with specialized grade oil to create a "tacky" mesh.
  2. Universal Clamp-On Design: Equipped with a pliable 4-inch rubber flange that stretches up to 1/16" to fit slightly oversized pipes.
  3. Tapered Geometry: The 5.375" base tapering to a 4" top allows for high volume while fitting into tighter engine bays.
  4. Washable & Reusable: Designed to be cleaned and re-oiled using the K&N Recharger Kit, lasting up to 50,000 miles between cleanings.
  5. Robust Construction: Features ultra-strong molded rubber components and an integrated steel mesh for structural integrity.

Benefits

  1. Increased Horsepower: Reduces air restriction, allowing your engine to breathe easier and accelerate faster.
  2. Lifetime Value: Eliminates the need for constant disposable filter replacements, saving money over the life of the vehicle.
  3. Superior Filtration: Provides world-class protection against engine-damaging dust, dirt, and debris.
  4. Eco-Friendly: Reduces landfill waste by replacing hundreds of disposable paper filters.
  5. Easy Installation: Slides directly onto a 4-inch intake tube and secures in seconds with the included stainless steel worm gear clamp.

This Part Fits:

Year Make Model Submodel
2000-2008 Honda S2000 Base
2008 Honda S2000 CR
2001-2005 Lexus IS300 Base
2002-2005 Lexus IS300 Sportcross
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Shipping:

1. Shipments to the Contiguous 48 US States Orders $149.99 and over qualify for our fast free shipping offer. We have worked with our shipping companies and integrated their shipping prices with our website for customer comfort.

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.

Returns:

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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