K&N Engineering RU-4550 Universal Air Filter, 4-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: RF-1023DK Air Filter Wrap, 99-5000 Filter Care Service Kit Aerosol

• NO-HASSLE WARRANTY: 1-Year Limited Warranty
• One Year Limited Warranty

The K&N Engineering RU-4550 Universal Air Filter is designed for a broad range of automotive, powersports, racing, industrial, and recreational applications. Its universal design accommodates air intakes with varying angles and offset diameters, making it a practical replacement or upgrade for custom intake systems, generators, snowmobiles, tractors, radio-controlled vehicles, and other equipment.

The filter uses a durable, pliable molded rubber flange that helps absorb vibration and provides a secure connection to the intake tube. The flange can stretch slightly to accommodate minor variations between sizes. A reusable filter element can be cleaned and serviced instead of routinely replaced, helping support long-term performance and reduced maintenance waste. For additional protection in dusty or off-road environments, the K&N RF-1023DK Air Filter Wrap is an associated accessory, while the K&N 99-5000 Filter Care Service Kit Aerosol can be used for filter maintenance.

Brief Description: Washable and reusable universal air filter for compatible intake systems and equipment.

Key Product Specifications & Technical Data:

• Brand: K&N Engineering
• Part Number: RU-4550
• Product Type: Universal automotive air filter
• Flange Size: 4 inches
• Base Size: 5-3/8 inches
• Top Size: 4-1/2 inches
• Filter Height: 6 inches
• Service Type: Washable and reusable

What's Included: One K&N Engineering RU-4550 Universal Air Filter. Filter care products and air filter wraps are sold separately.

Fitment: Listed applications include select 2002 and 2001 BMW 525i models, select 2000 and 1999 Honda Civic models, the 2002 Mini Cooper, and select 2009 Mazda MX-5 Miata models. Verify intake configuration and application compatibility before installation. This product is not CARB approved and may not be legal for sale or use on pollution-controlled motor vehicles in California or other regulated areas. A one-year limited warranty is included.

Features:

• Universal Compatibility: Designed for a wide variety of intake systems used in vehicles, generators, snowmobiles, tractors, racing equipment, and other applications.
• Durable Rubber Flange: Molded pliable rubber construction helps absorb vibration and provides a secure intake connection.
• Washable and Reusable: Cleanable filter media supports repeated service and helps reduce the need for disposable replacement filters.
• Flexible Fit: The flange can stretch slightly to accommodate minor variations between intake tube sizes.

Fitments:
1999 Honda Civic CX
1999 Honda Civic DX
1999 Honda Civic EX
1999 Honda Civic GX
1999 Honda Civic HX
1999 Honda Civic LX
1999 Honda Civic Si
1999 Honda Civic Value Package
2000 Honda Civic CX
2000 Honda Civic DX
2000 Honda Civic EX
2000 Honda Civic GX
2000 Honda Civic HX
2000 Honda Civic LX
2000 Honda Civic Si
2001 BMW 525i Base
2002 BMW 525i Base
2002 Mini Cooper S
2004 Volkswagen Golf GTI VR6
2009 Mazda MX-5 Miata Grand Touring
2009 Mazda MX-5 Miata Sport
2009 Mazda MX-5 Miata SV
2009 Mazda MX-5 Miata Touring

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: t
Units Per Sku: 1