General Motors option code

K66

K66: a General Motors factory option code reused for more than one part across 1964–1968 and 4 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.

4 models · 5 model years · 2 sources

Black 1964 Chevrolet Impala SS convertible with the top down, parked at a curb, front three-quarter, showing the 1964 grille and full wheel covers — 1964 Chevrolet Impala SS convertible in black Photo: MercurySable99, CC BY-SA 4.0, via Wikimedia Commons

Every sourced appearance

Year	Model	As named that year	Price	Installs
1964	Chevrolet Impala SS	Transistor regulator and ignition (V8 series) RPO	Unknown	Unknown
1965	Chevrolet Chevelle and Malibu SS	Transistorized ignition RPO	$73.35	209 Reported
1965	Chevrolet Impala SS	Transistor regulator and ignition (V8 series) RPO	Unknown	Unknown
1966	Chevrolet Chevelle and Malibu SS	Transistor ignition RPO	$73.75	2,013 Reported
1966	Chevrolet Chevy II and Nova	Full transistor ignition (V8) RPO	Unknown	Unknown
1966	Chevrolet Impala SS	Full transistor ignition (V8 series) RPO	Unknown	Unknown
1967	Oldsmobile Cutlass, 4-4-2 and Hurst/Olds	Engine ignition system, Ultra-High-Voltage (with L66 or L78) RPO	$100.05	Unknown
1968	Oldsmobile Cutlass, 4-4-2 and Hurst/Olds	Engine ignition system, Ultra-High-Voltage (N.A. with L65) RPO	$100.05	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.