General Motors option code

YA7

YA7: a General Motors factory option code reused for more than one part across 1973 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 · 1 model year · 1 source

Dark maroon Chevrolet Chevelle Malibu Colonnade hardtop coupe at a street car show, low front three-quarter with the hood raised, showing the single headlamps, bow-tie grille, Malibu fender script and aftermarket wheels — Shown: 1973-1974 Chevrolet Chevelle Malibu Colonnade coupe in dark maroon, hood open Photo: Bull-Doser, public domain, via Wikimedia Commons

Every sourced appearance

Year	Model	As named that year	Price	Installs
1973	Chevrolet Chevelle and Malibu SS	California emission test RPO	Unknown	71,346 Reported
1973	Chevrolet Chevy II and Nova	California assembly line emission test RPO	$15	Unknown

Every row traces to the source it links from on that model's own year page; this table only collects them in one place.