K&N Engineering RU-4180 Universal Clamp-On Air Filter, 3-Inch Flange

K&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio-controlled cars, generators, snowmobiles, tractors, and other applications. Regardless of the angle or offset diameter of the air intake, there is probably a K&N Universal air filter for your equipment. All filters are constructed with ultra-strong molded pliable rubber flanges which absorb vibration and allow for secure attachment and can also be stretched for up to 1/16 of an inch (1.5mm) to fit in-between sizes. K&N universal air filters are washable and reusable. Regardless of the angle or offset diameter of an air intake, there is probably a K&N Universal air filter for your equipment. K&N universal air filters are washable and reusable. Associated products: 22-8033PK Air Filter Wrap, 99-5000 Filter Care Service Kit Aerosol

• CLEAN ONCE EVERY 5 YEARS: Engine air filter only needs cleaning every 75,000 miles under normal highway driving conditions (5 years based on the average miles driven per year of 15,000 miles)
• One Year Limited Warranty

The K&N Engineering RU-4180 Universal Clamp-On Air Filter is designed for a broad range of automotive, powersports, racing, generator, tractor, snowmobile, and other air intake applications. Its universal design accommodates intake systems with varying angles and offset diameters, making it a practical solution when a standard replacement filter is not suitable. The clamp-on configuration provides a secure connection while supporting flexible installation options.

Built with an ultra-strong, pliable molded rubber flange, the K&N RU-4180 helps absorb vibration and can stretch slightly to accommodate minor variations in intake size. The reusable filter is washable and designed for long-term service when properly maintained. Under normal highway driving conditions, K&N recommends cleaning the engine air filter approximately once every 75,000 miles, or about every five years based on average annual driving. A K&N 22-8033PK Air Filter Wrap and 99-5000 Filter Care Service Kit Aerosol are associated accessories.

Fitment: This universal air filter is listed for select 2004–2006 Nissan Altima and 2004–2005 Nissan Maxima applications. Verify the intake configuration and required fit before installation. The RU-4180 is not California Air Resources Board approved; applicable emissions requirements should be reviewed before use. A one-year limited warranty is included.

What's Included

• One K&N Engineering RU-4180 universal clamp-on air filter

Features:

• Universal Application: Designed for automotive, racing, generator, powersports, tractor, snowmobile, and other compatible intake systems.
• Washable and Reusable: Can be cleaned and serviced for extended use instead of routinely replacing disposable filters.
• Flexible Rubber Flange: Molded rubber construction helps absorb vibration and permits slight stretching for a secure fit between intake sizes.
• Long Service Interval: Recommended cleaning interval is approximately every 75,000 miles under normal highway driving conditions.

Fitments:
2004 Nissan Altima SE
2004 Nissan Maxima SE
2004 Nissan Maxima SL
2005 Nissan Altima SE
2005 Nissan Altima SE-R
2005 Nissan Altima SL
2005 Nissan Maxima SE
2005 Nissan Maxima SL
2006 Nissan Altima SE
2006 Nissan Altima SE-R
2006 Nissan Altima SL
2006 Nissan Maxima SE
2006 Nissan Maxima SL
2007 Nissan Maxima SE
2007 Nissan Maxima SL
2008 Nissan Maxima SE
2008 Nissan Maxima SL

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: false
Units Per Sku: 1