Heres the listing for K&N RU-5144 Universal Clamp-On Air Filter

Vehicle Fitment

• Universal - designed for custom intakes, aftermarket airboxes, or non-OEM applications

Fitment Notes

• Clamp-on filter requires intake tube with ≈ 2.75 in (70 mm) inside diameter flange
• Not a direct OEM airbox replacement - verify flange diameter and clearance before installation

Features

• Premium cotton-gauze media for high airflow and engine breathing
• Round-tapered shape - versatile for many custom setups
• Durable molded rubber flange absorbs vibrations and ensures secure clamp-on fit
• Washable and reusable - minimizes waste and long-term costs
• Pre-oiled and ready to install out of the box
• Multi-layer filtration design to trap contaminants while maximizing airflow
• Improved throttle response and potential performance gains in custom intake applications
• Low-restriction design suitable for performance, racing, or off-road use

Specifications

• Flange Inside Diameter: 2.75 in (70 mm)
• Base Outside Diameter: 4.75 in (121 mm)
• Top Outside Diameter: 4.00 in (102 mm)
• Height: 8.00 in (203 mm)
• Filter Shape: Round Tapered / Clamp-On
• Filter Media: Oiled cotton gauze
• Washable / Reusable: Yes
• Filter Re-oiling Amount: ~1.18 oz (35 ml)
• Included: 1 x air filter

Included Components

• 1x K&N RU-5144 Air Filter (pre-oiled, ready to install)

Product Description

The RU-5144 Universal Clamp-On Air Filter from K&N offers a flexible solution for custom intake setups, aftermarket airboxes, and non-standard applications. Its 2.75-inch flange and round-tapered design make it compatible with many intake tubes, while the molded rubber flange provides a secure, vibration-resistant clamp-on fit. The premium cotton-gauze filter media delivers efficient airflow and solid filtration - ideal for performance, racing, or off-road use.

Washable and reusable, the RU-5144 is built for long-term use and reduced maintenance costs. Pre-oiled and ready to install, it's among the easiest performance upgrades to fit for custom or non-OEM intake systems. Whether you're building a custom engine setup or upgrading a standard intake, this filter balances airflow, filtration, and reusability effectively.