K&N RU-9630 Universal Clamp-On Round Tapered Cotton Gauze Air Filter 2.5 In

Vehicle Fitment

• Universal - Not vehicle-specific. Fits any application with a 2.5 in. inlet diameter including cars, trucks, powersports, generators, tractors, snowmobiles, and racing vehicles.

Fitment Notes

• Verify inlet tube diameter is 2.5 in. (63.5mm) before purchase
• Rubber flange can stretch up to 1/16 in. (1.5mm) to accommodate in-between sizes
• Not intended for closed airbox or drop-in filter applications

Features

• High-flow cotton gauze media engineered to increase horsepower and acceleration
• 4-layer premium cotton gauze construction traps contaminants while maximizing airflow
• Pre-oiled and ready to install straight out of the box
• Washable and reusable - engineered to last the lifetime of the vehicle
• Ultra-strong molded pliable rubber flange absorbs vibration and ensures secure attachment
• Cleaning interval of up to 75,000 miles under normal highway driving conditions
• Round tapered (cone-style) design promotes smooth, unrestricted airflow
• Environmentally friendly - reduces disposable filter waste compared to paper elements

Specifications

• Flange Inside Diameter: 2.5 in. (63.5mm)
• Base Outside Diameter: 4.5 in. (114mm)
• Top Outside Diameter: 3.5 in. (88.9mm)
• Filter Height: 5.0 in. (127mm)
• Flange Length: 0.75 in.
• Shape: Round Tapered (Cone)
• Filter Color: Red
• Filter Media: Oiled Cotton Gauze
• Flange Material: Pliable Rubber

Included Components

• 1x K&N RU-9630 Universal Clamp-On Air Filter (pre-oiled)

Product Description

The K&N RU-9630 is a universal clamp-on performance air filter built for enthusiasts who want more airflow without sacrificing filtration. Its round tapered cone design and multi-layer oiled cotton gauze media deliver improved engine breathing across a wide range of applications - from street cars and trucks to powersports equipment, generators, and racing builds. The pliable rubber flange clamps securely onto any 2.5 in. intake tube and can stretch slightly to fit in-between sizes.

Unlike disposable paper filters, the RU-9630 is washable and reusable with a service interval of up to 75,000 miles under normal driving conditions. It arrives pre-oiled and installs in minutes with no modifications required. Whether you're upgrading a custom intake, replacing a worn cone filter, or outfitting off-road or utility equipment, this K&N filter delivers lasting performance and significant long-term value.