This tool is designed to lock the low pressure shut valve to allow fast and easy brake system bleeding. No more needing to constantly remove low pressure switch and center the low pressure valve during … Compatible with disc/disc and disc/drum pv2 and pv4 brake systems.

Fits ac delco 172-1353 and 172-1371 models. Eliminates the need to … Use of this tool prevents the inconvenience of accidentally tripping your proportioning valve during the brake bleeding process. Tool is made of lightweight, durable nylon to protect the threads on your …