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  • K&N Filter Universal Rubber Filter 2 1/2 inch Flange 6 inch Base 5 inch Top 5 1/2 inch Height
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K&N Filter Universal Rubber Filter 2 1/2 inch Flange 6 inch Base 5 inch Top 5 1/2 inch Height

K&N Engineering
KNNRU-4950
In stock
Air Filters - Universal Fit
$68.99
K&N Universal Rubber Air Filter 2.5" Flange | 6" Base Boost horsepower & throttle response with the K&N Universal Clamp-On Air Filter. Features a 2.5"...
Size Guide
$68.99
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K&N Filter Universal Rubber Filter 2 1/2 inch Flange 6 inch Base 5 inch Top 5 1/2 inch Height
Description

K&N Universal Rubber Air Filter 2.5" Flange | 6" Base

Boost horsepower & throttle response with the K&N Universal Clamp-On Air Filter. Features a 2.5" flange, 6" base, 5" top, and 5.5" height. Washable & reusable!

Engineered for maximum airflow and engine protection, the K&N Universal Clamp-On Rubber Air Filter delivers race-proven performance in a compact, round-tapered (cone) design. Built with high-flow cotton gauze media layered between aluminum wire mesh, this high-performance filter is designed to increase horsepower and acceleration by allowing more air into your engine without compromising filtration quality.

Featuring a 2.5-inch inside diameter (ID) inlet, a 6-inch base diameter, a 5-inch top diameter, and a total height of 5.5 inches, this versatile cone filter is perfect for custom air intake builds. It is constructed with an ultra-durable, pliable rubber top and flange that absorbs engine vibration and provides a tight, secure clamp-on fit. The flange can stretch up to 1/16 of an inch (1.5mm) to accommodate custom fitment requirements. Pre-oiled and ready to install, it is 100% washable and reusable—making it the last air filter your engine will ever need.

Best Uses

  1. Custom Cold Air & Short Ram Intakes: Ideal for custom-fabricated intake pipes with a 2.5-inch outer diameter.
  2. Compact Engine Bays & Import Tuners: Perfect for smaller engine compartments or vehicles with 2.5" intake piping.
  3. Motorsports & Track Cars: Great for race cars, drift builds, and track vehicles where unrestricted airflow is critical.
  4. Powersports & Off-Road Vehicles: Excellent performance upgrade for custom ATVs, UTVs, buggies, and snowmobiles.
  5. Custom Engine Swaps & Industrial Equipment: Suitable for engine-swapped vehicles, generators, or custom machinery requiring custom filtration setups.

Features

  1. Premium High-Flow Cotton Media: Formulated with multiple layers of oiled cotton gauze to deliver up to 50% more airflow than standard paper filters.
  2. Pliable Molded Rubber Flange: Built with a durable rubber flange that absorbs engine vibration, resists cracking, and stretches up to 1/16" (1.5mm) for a secure fit.
  3. Round Tapered (Cone) Architecture: Features a 6" base, 5" top, and 5.5" filter height, optimized for compact spaces requiring high air volume.
  4. Direct Clamp-On Design: Easy installation using the integrated flange—simply slide over your intake tube and tighten with a hose clamp.
  5. Washable & Reusable Filter Element: Designed to be cleaned and re-oiled for thousands of miles of extended service.

Benefits

  1. Increased Horsepower & Torque: Superior airflow reduces intake restriction, helping your engine pull in more oxygen for increased throttle response and power output.
  2. Cost-Effective & Eco-Friendly: Eliminates the need to repeatedly buy disposable paper filters—wash, re-oil, and reuse it for the lifespan of your vehicle.
  3. Engine Protection: Traps dirt, dust, and abrasive debris effectively to safeguard critical internal engine components under demanding conditions.
  4. Universal Versatility: Simple dimensioning (2.5" Flange ID) makes it compatible across various automotive, powersports, and custom intake applications.
  5. Vibration Resistance: The ultra-strong flexible rubber flange acts as an isolator, preventing intake pipes from loosening under heavy engine vibration.



This Part Fits:

 

Year Make Model Submodel
2007-2009 Ford Focus S
2007-2009 Ford Focus SE
2009 Ford Focus SEL
2007-2009 Ford Focus SES
2009-2011 Mitsubishi Lancer DE
2009-2011 Mitsubishi Lancer ES
2011 Mitsubishi Lancer ES Sportback
2010-2011 Mitsubishi Lancer Evolution GSR
2010-2011 Mitsubishi Lancer Evolution MR
2010-2011 Mitsubishi Lancer Evolution MR Touring
2010 Mitsubishi Lancer Evolution SE
2012 Mitsubishi Lancer GT
2012 Mitsubishi Lancer GT Sportback
2010-2011 Mitsubishi Lancer GTS
2010-2011 Mitsubishi Lancer GTS Sportback
2009-2011 Mitsubishi Lancer Ralliart
2010-2011 Mitsubishi Lancer Ralliart Sportback
2012 Mitsubishi Lancer SE
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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.

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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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