When selecting one of K&Ns universal round straight air filters, you should consider the following dimensions as they relate to the specification chart:. Mounting Flange Inside Diameter - This is the most critical dimension and should be very close to the diameter of the applications inlet flange. The flange will stretch up to 1/8in. for those in between sizes.. Filter Diameter - This is the overall diameter of the filter. Always use the largest diameter practical to insure maximum filtration.. Filter Length - This dimension is the length of the filter body only, it does not include the flange length. Always use the longest filter practical for maximum filtration.. Flange Angle and/or Length - If no angle is listed in the specifications table, the flange is straight.. Any angle listed is in degrees and can be utilized when space is a problem.. Flange Type - The location of the flange in relation to the O.D. of the filter is sometimes offset to one edge of the filter for more clearance in an application.. K and N Universal Round Straight Sold Individually . These filters are legal ONLY for racing vehicles. Not applicable, nor intended for use on emission controlled street or highway vehicles. Legal in California ONLY for racing vehicles which may NEVER be used upon a highway. Mounting Flange Inside Diameter 2 7/16in. MM 62, Filter Outside Diameter 5 1/2in. MM 140, Filter Length 6in. MM 52, Flange Length 5/8in. Flange Type Offset


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Manufacturer's Part Number	RU-1000
CARB Approved	No