Please note some products may not be available or may take longer than normal to arrive due to supplier backlog. All KeyParts GROUND shipped products are shipping 2 to 5 business days after placing your order, all Truck Freighted (large and heavy) items are shipping 3 to 10 business days after placing your order.
American Autowire Classic Update products are shipping 5 weeks after placing your order. Brake Parts typically ship the same day or next day.
74-77 Workhorse Gmc/Chevy "P" 1
Ton Van Brake Proportioning Valve With Brake Code : JF9 Type,Code# I
Gm# 01257225 ,1257225
Our Proportion Valve comes with a 1 year warranty.
For use on Disc/Drum Setup Only
Our brake proportioning valve has a 9/16"-18 connection for Rear Brakes & Dual 3/8"-24 ports for the front brakes.
The connections from the Master Cylinder are 1/2"-20 and 7/16"-24
This valve comes with the correct sensor.
This valve comes with a 1 year warranty.
We have a prop valve bleeding tool in the related items section of this page.
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