Product Description
Webb 65546 15 x 4 Heavy-Duty Outboard Brake Drum – 122921
The Webb 65546 is a 15 x 4-inch cast-iron brake drum with an outboard mounting configuration. It features an 8.75-inch pilot diameter, 11.25-inch bolt circle, and 10-hole mounting pattern.
The 122921 number in our inventory is a confirmed interchange for the 65546 drum family. Other recognized numbers include Gunite 3771A/3771AX, KIC 54272-018, Chevrolet/GMC 15619973, and Volvo 3099105. This drum is associated with heavy-duty steer-axle wheel ends using 15 x 4 brakes.
Part Number: 65546
Product Type: Heavy-Duty Brake Drum
Brand: Webb
Brake Size: 15 x 4 in.
Brake Surface Diameter: 15.00 in.
Brake Shoe Width: 4.00 in.
Brake Surface Flat: 4.75 in.
Overall Depth: 8.98 in.
Mounting Type: Outboard
Drum Type: H
Material: Cast Iron
Pilot Diameter: 8.75 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: 15.12 in.
Approximate Weight: 77–78 lb
Balanced Webb Version: 65546B
Standard Finished Webb Version: 65546F
Meritor / Dayton Cross Reference: 122921 / 03-122921-002
Gunite Cross References: 3771A, 3771AX
KIC Cross Reference: 54272-018
Chevrolet / GMC Cross Reference: 15619973
Volvo Cross Reference: 3099105
Automann Cross Reference: 151.5412BA
Inventory Description: DRUM 122921
Before ordering, confirm the 65546-series number or a verified interchange, along with the 15 x 4 brake size, 8.75-inch pilot, 11.25-inch bolt circle, 10-hole pattern, 0.81-inch mounting holes, and outboard mounting configuration to ensure proper fit.