Webb 66864F cross reference.

DRUM SPECIFICATIONS
VARIANT 1
VARIANT 2
Brake surface diameter16.5″
Width7.5″
Height10.63″
Hub pilot8.78″
Bolt circle11.25″
Bolt holes10
Hole diameter1″
TypeTRACTOR/TRAILER
ALSO CROSSES TO
MERITOR/ROCKWELL 3219-W-5821WEBB 56864FGUNITE 3600AGUNITE 3922GUNITE 3773GUNITE 3568GUNITE 3593GUNITE 3668KIC 53033-01KIC 60001-018KIC 60000-018DAYTON 123207DAYTON 123404DAYTON 123416DAYTON 123022DAYTON 123788NSN 2530-01-441-1881MERITOR/ROCKWELL 3219-D-4892GILLIG 82-23059-001GILLIG 82-32833-007ALLIANCE N42A107150ALLIANCE ABPN42A
TBP EQUIVALENT
TBP-0541640
16.5″ × 7″ Brake Drum

Drop-in equivalent for Webb 66864F: G3500 gray iron, FMVSS 121 tested, made in Vietnam with zero US AD/CVD exposure.

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