Description
Webb 376B Brake Drum – What it is and common specs
The Webb 376B is an older/legacy Webb Wheel Products brake drum number that is most often found in heavy‑duty truck and trailer applications using 16.5‑inch S‑cam brakes. Webb no longer catalogs “376B” as a current production number, so it is typically handled today via modern Webb replacement
Brake size: 16.5″ × 7″
Mounting: Outboard mount
Bolt holes: 10 (stud‑piloted Budd style)
Balancing: Balanced
Application: Rear truck / trailer axles
Common Webb PN today: 56864B
Brand Part Number
W703505S439, WWD66864B
BWP-NSI BD09
DURABRAKE 16792X
GUNITE 3600AX
MACK 8161808
MERITOR 85123207002
NAVISTAR W66864B
STEMCO 600004HD
WALTHER EMC 13-00043
Webb’s own product listings identify 56864B as a standard 16.5 x 7 balanced brake drum used across multiple heavy-duty applications.
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