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.

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.

• Designed To Increase Horsepower And Acceleration
• High Air Flow With Excellent Filtration
• Clamp-On Washable and Reusable Air Filter
• Malleable Flanges
• One Year Limited Warranty

Air Filter Color:	Red
Air Filter Large End Diameter:	6 in (152 mm)
Air Filter Material:	Cotton Gauze
Air Filter Shape:	Round Tapered
Base Outside Diameter:	6 in (152 mm)
Filter Re-Oiling Amount:	1.27 oz (38 ml)
Flange Angle:	0 degrees
Flange Inside Diameter:	3 in (76 mm)
Flange Length:	1.75 in (44 mm)
Flange Offset:	0 in (0 mm)
Flange Type:	Centered
Flanges:	1
Frame Design:	Flexible
Height:	6 in (152 mm)
Item Type:	High Performance
Oil Included:	Yes
Package Contents:	1 Air Filter
Package Material:	Corrugated
Package Quantity:	1
Package Type:	Box
Pre-Screened:	No
Product Style:	Round Tapered Universal Air Filter
Prop 65 (C, R or CR):	CR
Prop 65 - Short Label:	WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
Prop 65 Warning Label:	https://www.knfilters.com/images/l/prop65.jpg
Prop 65 Yes/No:	Yes
Title:	K& N RU-4180 Universal Clamp-On Air Filter
Top Material:	Rubber
Top Outside Diameter:	4.5 in (114 mm)
Top Style:	Rubber
Warranty:	1 Year Limited
Washable:	Yes
Weight:	1.5 lb (0.7 kg)

• 2004-2008 Nissan Maxima | Note: Round Tapered; Base OD-6 in.; Top OD-4.5 in.; Flange ID-3 in./L-1.75 in.; H-6 in.; Centered; Rubber
• 2004-2006 Nissan Altima | Note: Round Tapered; Base OD-6 in.; Top OD-4.5 in.; Flange ID-3 in./L-1.75 in.; H-6 in.; Centered; Rubber