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  • K&N Universal Clamp-On Air Filter 2-7/16in Flange 4-1/2x3-3/4in Base 3x2in Top 6in Height
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K&N Universal Clamp-On Air Filter 2-7/16in Flange 4-1/2x3-3/4in Base 3x2in Top 6in Height

K&N Engineering
KNNRC-3680
Auf Lager
Air Filters - Universal Fit
$68.99
K&N Universal Clamp-On Air Filter | 2-7/16" Flange, 6" Height Upgrade engine airflow with the K&N Universal Clamp-On Air Filter (2-7/16" Flange, 6" Height). High-flow,...
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$68.99
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K&N Universal Clamp-On Air Filter 2-7/16in Flange 4-1/2x3-3/4in Base 3x2in Top 6in Height
Description

K&N Universal Clamp-On Air Filter | 2-7/16" Flange, 6" Height

Upgrade engine airflow with the K&N Universal Clamp-On Air Filter (2-7/16" Flange, 6" Height). High-flow, washable design built to boost performance.

The K&N RC-3680 Universal Clamp-On Air Filter is engineered to increase horsepower and acceleration while delivering exceptional engine filtration. Built with a 2-7/16 inch flange inside diameter, a 4-1/2 x 3-3/4 inch base, a 3 x 2 inch top, and a 6 inch total height, this oval tapered filter fits custom intake setups where space is tight. It utilizes multiple layers of oiled cotton gauze media to trap dirt without restricting air intake. The flexible molded rubber flange absorbs engine vibration and stretches up to 1/16" for a secure fit on slightly varying tube sizes.

Best Uses

  1. Custom Cold Air Intakes: Great for aftermarket performance intake systems on cars and trucks.
  2. Motorsports & Racing: Designed to handle harsh racing conditions while maximizing throttle response.
  3. Small Engine Modifications: Ideal for custom motorcycles, ATVs, snowmobiles, or power equipment.
  4. Tight Engine Bays: The oval tapered design provides clearance in tight spaces where standard round filters won't fit.

Features

  1. High-Flow Oiled Cotton Media: Constructed with layered cotton gauze to maximize airflow while capturing dust and debris.
  2. Pliable Molded Rubber Flange: Strong, vibration-absorbing rubber base that stretches up to 1/16" (1.5mm) for precise attachment.
  3. Clamp-On Design: Simple clamp attachment for fast installation directly onto standard intake piping.
  4. Tapered Oval Shape: Features a 4-1/2" x 3-3/4" base tapering up to a 3" x 2" top with a 6" overall filter height.
  5. Washable & Reusable: Designed to be cleaned and re-oiled for thousands of miles of performance.

Benefits

  1. Boosts Horsepower & Acceleration: Increases engine intake velocity to help generate additional horsepower.
  2. Cost-Effective Long Term: Eliminates the need to buy disposable paper filters since it is reusable.
  3. Superior Filtration Efficiency: Traps tiny contaminants to protect internal engine components from damage.
  4. Secure, Snug Fitment: Flexible flange absorbs engine vibrations without slipping off the intake tube.
  5. Environmentally Friendly: Helps reduce landfill waste created by frequent disposable filter replacements.  
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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.

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