K&N RU-2820 Universal Clamp-On Round Straight Air Filter 3in Flange 5in OD 6.5H

Vehicle Fitment

• Universal Fit - Designed for performance vehicles, cold air intake systems, racing builds, and any application with a 3.00 in. intake tube requiring a clamp-on round straight air filter

Fitment Notes

• This is a universal clamp-on filter - verify your intake tube outside diameter matches the flange inside diameter of 3.00 in. before purchasing
• Rubber flange can be stretched up to 1/16 in. (1.5 mm) to accommodate in-between sizes or angled intake configurations
• Not a direct OEM replacement for a specific vehicle - confirm fitment by measuring your intake tube diameter

Features

• Multi-layer oiled cotton gauze media delivers up to 50% more airflow than standard paper filters
• Round straight design provides uniform filter surface area across the full 6.5-inch height
• Ultra-strong molded pliable rubber flange absorbs vibration and provides a secure, leak-free attachment
• Washable and reusable - requires cleaning only every 75,000 miles under normal conditions
• Pre-oiled and ready to install straight out of the box
• Rubber top end cap for a clean, secure finish
• Made in the USA
• Backed by K&N's 10-Year/Million Mile Limited Warranty

Specifications

• Shape: Round Straight
• Flange Inside Diameter: 3.00 in. (76 mm)
• Flange Length: 0.625 in. (16 mm)
• Flange Type: Centered (Single)
• Outside Diameter: 5.00 in. (127 mm)
• Height: 6.50 in. (165 mm)
• Filter Material: Multi-layer oiled cotton gauze
• Filter Color: Red
• Top Style: Rubber End Cap
• Inner Wire: No
• Weight: 1.20 lb (0.5 kg)

Included Components

• 1x K&N RU-2820 Universal Clamp-On Round Straight Air Filter

Product Description

The K&N RU-2820 is a high-flow universal clamp-on round straight air filter built for performance cold air intakes, racing builds, and custom applications requiring a 3-inch flange with a consistent 5-inch diameter throughout its 6.5-inch height. Its straight cylindrical profile delivers a uniform filter surface area along its full length, making it well-suited for installations where consistent diameter is preferred or required by the intake housing geometry. The multi-layer oiled cotton gauze construction flows significantly more air than any paper element, translating to sharper throttle response and measurable horsepower gains.

The centered 3.00 in. rubber flange mounts securely onto matching intake tubes, absorbs vibration, and can be stretched slightly to fit in-between sizes. Washable and reusable, the RU-2820 arrives pre-oiled and only needs cleaning every 75,000 miles under normal highway driving conditions. It is backed by K&N's 10-Year/Million Mile Limited Warranty and made in the USA - making it a reliable, long-term upgrade for any performance or racing application requiring a taller straight-body round clamp-on filter.