Product Description
Webb 66878F 16.5 x 7 Heavy-Duty Outboard Brake Drum
The Webb 66878F is a 16.5 x 7-inch heavy-duty brake drum with an outboard mounting configuration. It features a 9.00-inch pilot diameter, 10.83-inch bolt circle, and 8-hole mounting pattern.
The 8-hole configuration is an important identifying feature of the 66878F, since many other Webb 16.5 x 7 drums use a 10-hole pattern. Gunite 3402A is a confirmed interchange for this drum.
Part Number: 66878F
Base Part Number: 66878
Product Type: Heavy-Duty Brake Drum
Brand: Webb
Brake Size: 16.5 x 7 in.
Brake Surface Diameter: 16.50 in.
Brake Surface Flat: 7.38 in.
Overall Depth: 10.25 in.
Mounting Type: Outboard
Drum Type: K
Pilot Diameter: 9.00 in.
Bolt Circle Diameter: 10.83 in.
Bolt Holes: 8
Bolt Hole Diameter: 1.00 in.
Back Plate Thickness: 0.50 in.
Maximum Wear Diameter: 16.62 in.
Approximate Weight: 104 lb
Gunite Cross Reference: 3402A
Automann Cross Reference: 151.6736
Mack Cross Reference: 17QJ4102
Additional Cross Reference: X-60960
Use: Commercial Trucks and Trailers
Inventory Description: DRUM
Before ordering, confirm the 66878/66878F number, 16.5 x 7 brake size, 9.00-inch pilot, 10.83-inch bolt circle, 8-hole pattern, and outboard mounting configuration to ensure proper fit.