General Motors option code

W63

W63: a General Motors factory option code reused for more than one part across 1970–1981 and 2 models — see the table for what it named each year, with installs and price where a source states them.

General Motors reused this code for more than one part over the years — read the "as named that year" column for what it meant on each row rather than assuming one meaning throughout.

2 models · 11 model years · 12 sources