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These proportioning valves are similar to what GM used on many cars in the 70's. They are non-adjustable and may require an adjustable valve in the rear brakes (if needed). Block incorporates metering (for front brakes) and proportioning (for rear brakes) into one unit. For use with four-wheel disc brake systems.
Includes hard lines to connect to a master cylinder with 1/2"-20 and 9/16"-18 outlets.
910-31352 Instructions (PDF)
had to make a trip to the parts store for a front port plug. my set up only used one port for the front.
Shouldnt have to write a reveiw for something that does what its supposed to do, but, so many things we buy dont work or fit like they should, its nice to find something that does what it should. I have installed several of these on customers cars and have not had any problems with them
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