Jump to content

Brake booster, single or dual?


Recommended Posts

Hi, I’m an old member doing a forum comeback, after near 10 years away.

My Comanche have been standing still for several years, but now I have started a full restoration.

I'm collecting parts for upgrades and modifications.

Is this a single or dual diaphragm brake booster?

Brake booster (2).JPG

Brake booster (3).JPG

Part no.



Link to comment
Share on other sites

Mopar part number 04713075 (52007236) is listed as 1994 XJ booster. 1994 XJs still had single diaphragm boosters, and changed to dual diaphragm boosters in 1995. From the 1994-1996 Chrysler Parts Manual:


4713075, XJ, 1994
4761788, XJ, 1995-96
4720868, ZJ, Rear Drum, 1994
4762163, ZJ, Rear Disc 1994
4856097, ZG, Rear Disc 1996
4761786, ZJ, Rear Disc, w/Gas Eng. 1995-96
4761779, ZJ, Rear Disc, w/Diesel Eng. 1995-96


So I think you have a single diaphragm booster. But your XJ is an Export model, and weird things happened. But if this were the case, your booster would not have p/n 52007236 on the tag. Part number 52007236 is a single diaphragm booster.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Create New...