Finally a high performance air filter for your genset or auxiliary sailboat engine that replaces the metal screen, foam or paper stock air filter. Ideal for small engine packages with air intake ports up to 2" in diameter, this filter is washable up to 4 times and easily mounts to a round air intake port using a hose clamp. Rated for maximum horsepower of 50HP, Walker designed the multi-size molded mount to adapt to a 1 1/2", 1 3/4", or 2" (OD) intake port. (For larger intakes sizes, the Universal AIRSEP Kit is recommended).