K&N RU-3510 Universal Dual-Flange Oval Clamp-On Air Filter

Vehicle Fitment

• Universal - fits intakes with ≈ 2.125 in (54 mm) flange ID

Fitment Notes

• Clamp-on filter - not a vehicle-specific OEM replacement
• Flange rubber is pliable and can stretch up to ~1/16 in for minor size adjustments

Features

• High-flow cotton gauze filtration media for improved airflow
• Washable and reusable - long service life
• Dual-flange oval shape for flexible mounting orientations
• Malleable rubber flanges absorb vibration and allow secure clamp-on fit
• Pre-oiled and ready to install
• Large filter surface area for better airflow and engine breathing
• Low-restriction design for enhanced throttle response
• Durable construction suitable for performance or custom intake use

Specifications

• Air Filter Shape: Oval (dual-flange)
• Flange Inside Diameter: 2.125 in (54 mm)
• Flange Center-to-Center: 3.125 in (79 mm)
• Flange Length: 0.375 in (10 mm)
• Base Outside Length: 6.25 in (159 mm)
• Base Outside Width: 4.00 in (102 mm)
• Height: 3.00 in (76 mm)
• Filter Media: Cotton gauze (washable & reusable)
• Filter Re-oiling Amount: 0.47 oz (≈ 14 ml)
• Includes: 1 x clamp-on air filter

Included Components

• 1x K&N RU-3510 Air Filter (pre-oiled, ready to install)

Product Description

The RU-3510 from K&N is a universal dual-flange clamp-on air filter designed for custom intakes, aftermarket airboxes, or non-standard intake setups. Its oval shape and pliable dual rubber flanges allow for flexible mounting, accommodating slight mismatches in intake flange dimensions or mounting angles. The cotton gauze media delivers high airflow with effective filtration, supporting better engine breathing and throttle response compared to restrictive stock filters.

Because it's washable and reusable, RU-3510 offers long-term value and reduces recurring filter replacement costs. It comes pre-oiled and ready to install, with malleable flanges that absorb vibration and ensure a secure clamp-on fit. This filter is ideal for enthusiasts and custom builders seeking dependable airflow and filtration in modified or custom intake systems.