GM Left Side Prop Valve Kit. Disc/Disc - Chrome

Chrome Disc/Disc Proportioning Valve Kit with Left-Mount Bracket for GM Master Cylinders

Get your four-wheel disc brake system balanced and plumbed with one complete kit. This chrome disc/disc proportioning valve kit is made for GM-style master cylinders with 9/16"-18 and 1/2"-24 ports, and it includes the valve, a bracket, lines, and the small parts that usually send you back to the parts store.

The chrome proportioning valve sets the correct front-to-rear brake pressure for disc/disc systems, so your rear brakes don’t lock up before your fronts. It mounts on the left (driver’s) side with the included chrome bracket, and stainless steel lines connect it to your master cylinder for a clean, polished look under the hood. The kit also includes a proportioning valve plug and a dash warning light connector, so your brake warning light works from day one.

What’s Included

• Chrome disc/disc proportioning valve
• Chrome left-mount bracket (driver’s side)
• Stainless steel lines (master cylinder to valve)
• Proportioning valve plug
• Dash warning light connector

Port Sizes

• Master cylinder: 9/16"-18 and 1/2"-24 ports
• Front brake outlets: (2) 3/8"-24
• Rear brake outlet: (1) 9/16"-18

Bleeding tip: We also offer the PVTool to help bleed your proportioning valve properly (sold separately).

Why Choose This Kit?

• Complete kit, with valve, bracket, lines, plug, and warning light connector
• Correct port sizes for GM-style master cylinders
• Chrome and stainless finish for a show-quality look
• Driver’s-side mount for a clean, factory-style layout

Questions about your setup? Call us at 866-601-4455 (M–F 8–4 EST).