The 1U478-003 Piston Air pump with its unique patented bi-directional is a direct replacement for all 200 series rotary vane pumps. It has a five-year/2,000-hour warranty The air pump features a lightweight clean sheet design, dual action piston pump, high airflow at lower power settings, and resistant to air system contaminates. Operates with cleaner and cooler air. For more information visit www.sigmatek.com.