Product Description
Webb 66857F 16.5 x 7.25 Heavy-Duty Outboard Brake Drum
The Webb 66857F is a heavy-duty cast-iron brake drum with a 16.50-inch brake surface diameter and 7.25-inch brake surface width. It uses an outboard mounting configuration with a 9.38-inch pilot, 11.25-inch bolt circle, and 10 mounting holes.
The 9.38-inch pilot is an important identifying measurement for the 66857F. Other recognized interchange numbers include Gunite 3257, DuraBrake 16857, Eaton 819130, and Ford D5HZ-1126-D and D5HZ-1126-E.
Part Number: 66857F
Base Part Number: 66857
Product Type: Heavy-Duty Brake Drum
Brand: Webb
Brake Surface Diameter: 16.50 in.
Brake Surface Width: 7.25 in.
Overall Depth: 10.25 in.
Mounting Type: Outboard
Drum Type: K
Material: Cast Iron
Pilot Diameter: 9.38 in.
Bolt Circle Diameter: 11.25 in.
Bolt Holes: 10
Bolt Hole Diameter: 0.81 in.
Back Plate Thickness: 0.50 in.
Maximum Wear Diameter: 16.62 in.
Approximate Weight: 106–111 lb
Gunite Cross Reference: 3257
DuraBrake Cross Reference: 16857
Eaton Cross Reference: 819130
Ford Cross References: D5HZ-1126-D, D5HZ-1126-E
Additional Cross References: 101208, 8219192, 97177, 99213, X-60477
Inventory Description: BRAKE DRUM
Before ordering, confirm the 66857/66857F number or a verified interchange, along with the 16.50-inch brake diameter, 7.25-inch brake surface, 9.38-inch pilot, 11.25-inch bolt circle, 10-hole pattern, and outboard mounting configuration to ensure proper fit.
