This is a new product that we offer as an alternative to the factory new replacement. This is the cylinder on the actuator used from 1995-2004 on the Chevrolet and Workhorse P32 Chassis for the automatic parking brake system. This is an upgraded cylinder, that is cost effective to replace the pricey factory replacement option. This design is using a stainless steel end cap, and one peice stainless steel piston, compared to the two piece brass and mild steel one from the factory. This cylinder is easy to change and offers a 5 year warranty. As always we are available for questions and for help in diagnosing issues with your automaticlly applying park brake.