UNI UNA866 Foam Air Filter for Yamaha Big Bear 400 2x4, 2000–2004

The UNI UNA866 air filter uses two layers of high-performance foam: a large-pore outer layer captures larger debris, while the small-pore inner layer helps prevent fine grit from reaching the cylinder. Its seamless foam design supports airflow and can be cleaned for reuse. This listing includes the foam filter element only; reuse the stock metal cage if the original filter uses one.