Dick's Auto Parts » 1.8125 in.

Description: K/N Custom Air Filter kits are designed to boost the performance from your carburetor while keeping dirt on the outside where it belongs. These assemblies come with custom chrome top and base plates and a K/N washable air filter.

Description: 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.