Proportioning Valve Kit: 64-85 GM Disc/Drum - BOTTOM MOUNT KIT A failing mass air flow

A failing mass air flow sensor will lead to the malfunction indicator light to turn on

If you need the axle seals only we have those separately # PW15677 but this is a discounted kit

Mounts as per the original

supplied separately

Buick continued with its own engine and updated body design

Proportioning Valve Kit: 64-85 GM Disc/Drum - BOTTOM MOUNT KIT A failing mass air flowProportioning Valve Kit for GM USA disc brake front, with original or with the disc conversion upgrade with the BOTTOM MOUNT KIT This one allows the PV to mount sideways up under the master cylinder giving more under master clearance etc. GM Kit for Disc Drum; For use with 3 8" Ports; Left Mount Brass Proportioning Valve, Steel Lines, Bracket and Proportioning Valve Plug. ALSO BUY A PVTOOL if you don't have one.. listed under "PVTOOL" This