F 350 4WD Super Duty V8-6.4L DSL Turbo (2008)
Parking Brake Drum: Specifications
Parking Brake Drum
Maximum drum diameter
F-250 and F-350 ...................................................................................................................................................................... 207.2 mm (8.157 inch)
F-450 and F-550 ...................................................................................................................................................................... 243.2 mm (9.574 inch)