Disc Brake Hold Off Valve
There is a good picture on here some place on here showing the valve but I can't find it. I found it when I was looking for a picture of the driver's side frame rail mounting bracket.
View attachment PR104b.jpg
Mopar Valve Notes:
This item is an exact reproduction disc brake hold off valve. This valve is used in conjunction with the distribution block. This valve was used to hold off pressure to the rear brakes so the front brakes would go on a split second before. This was also considered a correction valve for the 1970 model year. During extreme braking conditions, this valve prevented the car from getting sideways and evened out braking loads. This valve was used on all Mopar passenger cars from 1967-70 with the disc brake option and high performance engines. We have also seen this on some drum brake applications if you have a 2 piece front to rear brake line this is the valve that connects the two pieces.
Here is a picture of one on a B-body frame rail.
