K&N crankcase vent filter with a 1.75 inch clamp‑on flange, 3 inch diameter and 2.5 inch height has a rubber top and base with a K&N emboss. Constructed with washable, reusable synthetic filter media, it pushes onto tubing where venting is needed. Commonly used in racing or vintage carbureted applications, note that California legality is limited to off‑road racing vehicles per K&N guidance.
K&N 1.75 inch Vent 3 inch D 2.5 inch H Air Filter - Rubber Top