B150 1/2 Ton Van V6-239 3.9L (1989)
Brake Caliper: Specifications
Bore and Piston Dimensions
Bore and Piston Dimensions
Caliper Bore Inside Diameter
Note: Caliper piston bore diameter may be honed, but do not
oversize bore more than .001 inch.
Piston Outside Diameter
3.1 in