K&N RU-5172 Universal Clamp-On Air Filter 4.875" Flange, 9" Height

Vehicle Fitment

• Universal fit - designed to clamp onto intake systems with ~4.875" (124 mm) inside-diameter flange

Features

• Universal clamp-on design for broad vehicle, custom, and performance intake applications
• High-flow cotton gauze media engineered for improved air-intake efficiency and acceleration
• Washable and reusable filter construction for long-term value and fewer replacements
• Durable molded rubber flange absorbs vibration and allows slight size variation (~1/16" / ~1.5 mm)
• Tapered round shape fits many intake configurations including custom builds
• Easy installation - slide over the proper flange and clamp securely
• Reusable design reduces waste compared to disposable filters
• Backed by manufacturer's 1-Year Limited Warranty

Specifications

• Flange inside diameter: 4.875 in (124 mm)
• Filter height: 9.0 in (229 mm)
• Top outside diameter: 6.625 in (168 mm)
• Base outside diameter (large end): 9.0 in (229 mm)
• Filter media: Premium multi-layer cotton gauze
• Washable/reusable: Yes
• Weight: approx. 1.9 lb (0.86 kg)

Included Components

• 1x Universal clamp-on air filter (Part No. RU-5172)
• Installation instructions/documentation

Product Description

The K&N RU-5172 Universal Clamp-On Air Filter is a high-capacity universal solution for intake systems requiring a 4.875-inch (124 mm) flange. Designed for custom and performance applications, it offers improved airflow and long-lasting filtration for a wide range of vehicles and setups.

Installation is simple: confirm your intake pipe has an approximate 4.875-inch inside-diameter flange, slide the RU-5172 onto the flange, clamp securely, and it's ready. As a universal-fit part, verify clearance and correct flange compatibility before installation. The washable, reusable design reduces replacement cost while delivering reliable filtration performance.