Product Description
Webb 66865 16.5 x 7.5 Heavy-Duty Outboard Brake Drum – 122948
The Webb 66865 is a 16.5 x 7.5-inch heavy-duty cast brake drum with an outboard mounting configuration. It uses a 9.00-inch pilot diameter, 11.25-inch bolt circle, and 10-hole mounting pattern.
The 122948 number in our inventory is a documented interchange for Webb 66865B, the balanced version of this drum. Other recognized numbers in the 66865 family include Gunite 3441 and 3441X.
Part Number: 66865
Product Type: Heavy-Duty Brake Drum
Brand: Webb
Brake Size: 16.5 x 7.5 in.
Brake Surface Diameter: 16.50 in.
Brake Surface Width: 7.50 in.
Overall Depth: 10.31 in.
Mounting Type: Outboard
Material: Cast
Pilot Diameter: 9.00 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: 16.625 in.
Approximate Weight: 110 lb
Balanced Webb Number: 66865B
Standard Finished Webb Number: 66865F
Meritor / Dayton Cross Reference: 122948 / 03-122948-002
Gunite Cross References: 3441, 3441X
DuraBrake Cross Reference: 16123
Additional Cross References: 54229-018, 8058401, 15633317, 15616063
Use: Commercial Trucks and Trailers
Inventory Description: DRUM 122948
Before ordering, confirm the 66865-series number, 16.5 x 7.5 brake size, 9.00-inch pilot, 11.25-inch bolt circle, 10-hole pattern, and outboard mounting configuration to ensure proper fit.
