Product Description
Webb 64489F 15 x 4 Heavy-Duty Outboard Brake Drum – 123020 / 3674A
The Webb 64489F is a 15 x 4-inch cast-iron brake drum with an outboard mounting configuration. It uses an 8.78-inch pilot, 11.25-inch bolt circle, and 10 mounting holes measuring 1.31 inches in diameter.
The 64489F has a relatively shallow 7.84-inch overall depth and weighs approximately 72 lb. Meritor/Dayton 123020 and Gunite 3674A/3674AX are established interchange numbers for this drum.
Part Number: 64489F
Base Part Number: 64489
Product Type: Heavy-Duty Brake Drum
Brand: Webb
Axle Position: Front / Steer
Brake Size: 15 x 4 in.
Brake Surface Diameter: 15.00 in.
Brake Shoe Width: 4.00 in.
Brake Surface Flat: 4.44 in.
Overall Depth: 7.84 in.
Mounting Type: Outboard
Drum Type: H
Material: Cast Iron
Finish: Standard Finished
Pilot Diameter: 8.78 in.
Bolt Circle Diameter: 11.25 in.
Bolt Holes: 10
Bolt Hole Diameter: 1.31 in.
Back Plate Thickness: 0.50 in.
Maximum Wear Diameter: 15.12 in.
Approximate Weight: 72 lb
ABS Tone Ring Included: No
Outer Cooling Fins: No
Gunite Cross References: 3638A, 3674A, 3674AX
Meritor / Dayton Cross References: 123020, 03-123020-002
Navistar / International Cross Reference: 1648155C1
NAPA / Balkamp Cross References: 821-9253, 821-9369
NWRA Cross Reference: X-61288
Additional Cross References: 14674, 61078GU
Inventory Description: DRUM
Before ordering, confirm the 64489F number or a verified interchange, along with the 15 x 4 brake size, 8.78-inch pilot, 11.25-inch bolt circle, 10-hole pattern, 1.31-inch mounting holes, and outboard mounting configuration.