Webb 60660B cross reference.
The Webb 60660B is a 15″ × 5.31″ heavy-duty truck brake drum with 10 bolt holes on a 11.25″ bolt circle. It interchanges with 3 other part numbers. TBP Auto manufactures a direct equivalent, TBP-0540034, in G3500 gray iron in Vietnam — zero US AD/CVD duty.
OBSOLETE
DRUM SPECIFICATIONS
VARIANT 1
Brake surface diameter15″
Width5.31″
Height8.81″
Hub pilot8.78″
Bolt circle11.25″
Bolt holes10
Hole diameter0.94″
VARIANT 2
Brake surface diameter15″
Width4.53″
Height9.04″
Hub pilot8.78″
Bolt circle11.25″
Bolt holes10
Hole diameter0.94″
TypeTransit Drum
ALSO CROSSES TO
TBP EQUIVALENT
TBP-0540034
15″ × 4″ Steer Brake Drum — replaces 3800X · 65548B
Drop-in equivalent for Webb 60660B: G3500 gray iron, FMVSS 121 tested, made in Vietnam with zero US AD/CVD exposure.
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