Proportioning Valve Tool. Prevents the combination valve from tripping when used with CPP proportioning valve. Why Choose Our Proportioning Valve Tool?. Your brake system deserves the finest care. Built from lightweight yet sturdy aluminum alloy, it is designed for durability while ensuring ease of use.
Quick Brake Exhaust Tool for GM Combination Valves. Compatible with non-adjustable GM-type combination valves, including 172-1353, 172-1371, disc/disc, and disc/drum PV2 PV4 valves. Wide compatibility with various GM combination valves.