K&N RX-4990 Universal X-Stream Clamp-On Air Filter 3" Flange, 5.56" Height

Vehicle Fitment

• Universal fit - designed for intake systems with approx. 3.0" (76 mm) inside-diameter flange

Features

• Universal clamp-on design compatible with a wide variety of vehicles, custom builds and equipment
• X-Stream top design adds extra filter surface area for higher airflow and extended service life
• High-flow cotton gauze media engineered for improved horsepower 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)
• Round tapered body style fits many intake configurations including custom and performance setups
• Easy installation - simply slide over the intake flange and clamp securely
• Reusable design reduces waste compared to disposable filters

Specifications

• Flange inside diameter: 3.0 in (76 mm)
• Filter height: approx. 5.56 in (141 mm)
• Top outside diameter: approx. 5.0 in (127 mm)
• Base outside diameter (large end): approx. 6.0 in (152 mm)
• Flange length: approx. 1.75 in (44 mm)
• Filter media: Premium multi-layer cotton gauze
• Washable/reusable: Yes
• Approximate weight: 1.3 lb (0.6 kg)

Included Components

• 1x Universal X-Stream Clamp-On Air Filter (Part No. RX-4990)
• Installation instructions/documentation

Product Description

The K&N RX-4990 Universal X-Stream Clamp-On Air Filter offers a high-flow, reusable upgrade for intake systems with an approximately 3.0" (76 mm) flange diameter. The X-Stream top design increases exposed filter area for improved airflow and longer maintenance intervals, while the durable molded rubber flange ensures secure fitment and vibration absorption.

Installation is straightforward: confirm your intake flange is approximately 3.0" inside diameter, slide the RX-4990 filter onto the flange, clamp securely, and you're ready. As a universal-fit product (not tied to a specific make/model/year), always verify clearance, flange size compatibility, and correct fitment in your intake system before installation. The washable and reusable media deliver long-term value and reduced waste compared to disposable filters.