I also have some old Chevy parts manuals, and that number doesn't appear from '29 to the early '70s.
A general web search yielded a Detroit diesel fuel pump with that part number. Don't know if that applies here.
Curt ---- 1953 Chevy 6400, 1957 Chevy 2dr Sedan --"Mediocrity is easy, the good things take time"
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