General Motors option code

Z51

Z51: a General Motors factory option code reused for more than one part across 1974 and 1 model — 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.

1 model · 1 model year · 1 source