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[ http://castingnumbers.info/site/detail/10757/JM4 ]
Details for JM4
Manufacturer GM RPO
Category RPO Codes
Type RPO
Date
Notes Brakes, 4-wheel antilock, front disc/rear drum
Added to DB 2011-01-07 00:38:34 (3549 days ago)
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There are 2,506 casting numbers in the database.