This is the master cylinder assembly that is used on 1966-1971 CJ5 and CJ6 models. The master cylinder is used on all V6 models, or all 4 cylinder models with 10" brakes and some 4 cylinder models with 9" brakes. The master cylinder is the style that has the tin cover with a single bolt to hold it on and bolts to the bracket with two bolts on the front of the master cylinder.
Note: Always check what style master cylinder that is installed. This is not and acceptable conversion kit to change a single reservoir master cylinder to a dual one due to the brackets are not available with it.
1 Required per Jeep