Brake Prop Valve
The one installed on the brown Duster first picture is a 74 style on a 71 with 4 piston kelsey hayes
Second picture the one on the right is 70-72 4 piston kelsey hayes. On the left is single 73 single piston
The last picture is the original on my orange 71. I installed 73 LBP brakes worked great. The later valve's have a notch/ring around the top nut. easy way to tell them apart.See the pictures. They work the same . The valve you have is the later upgraded one.
This site attached is off line but they have detailed info and rebuild kits. I heve the info printed out if you want to take your apart and clean it I can scan them and post them. Use a 1970 line kit. make sure you order for the correct wheel base. Duster,Demon, Barracuda 108. Swinger and Scamp 111. There is a reason they did away with the early two piece valve. I am not going to get into that do a search . The valve you have is the best one you can use.
https://www.musclecarresearch.com/mopar-seal-kit-2
The one installed on the brown Duster first picture is a 74 style on a 71 with 4 piston kelsey hayes
Second picture the one on the right is 70-72 4 piston kelsey hayes. On the left is single 73 single piston
The last picture is the original on my orange 71. I installed 73 LBP brakes worked great. The later valve's have a notch/ring around the top nut. easy way to tell them apart.See the pictures. They work the same . The valve you have is the later upgraded one.
This site attached is off line but they have detailed info and rebuild kits. I heve the info printed out if you want to take your apart and clean it I can scan them and post them. Use a 1970 line kit. make sure you order for the correct wheel base. Duster,Demon, Barracuda 108. Swinger and Scamp 111. There is a reason they did away with the early two piece valve. I am not going to get into that do a search . The valve you have is the best one you can use.
https://www.musclecarresearch.com/mopar-seal-kit-2
