General Motors option code

M01

M01: a General Motors factory option code reused for more than one part across 1963–1968 and 3 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.

3 models · 6 model years · 5 sources

White 1963 Chevrolet Chevy II Nova SS two-door hardtop in the GM Heritage Center hall, side and front three-quarter view, with SS wheel covers and whitewall tires — 1963 Chevrolet Chevy II Nova SS hardtop coupe in white, GM Heritage Collection General Motors

Every sourced appearance

Year	Model	As named that year	Price	Installs
1963	Chevrolet Chevy II and Nova	Heavy-duty clutch RPO	Unknown	Unknown
1964	Chevrolet Chevelle and Malibu SS	Heavy Duty Clutch RPO	$5.40	673 Reported
1964	Oldsmobile Cutlass, 4-4-2 and Hurst/Olds	Clutch, heavy-duty (with V-8 engine) RPO	$5.38	Unknown
1965	Chevrolet Chevelle and Malibu SS	H.D. clutch RPO	$5.40	662 Reported
1966	Chevrolet Chevelle and Malibu SS	HD clutch - n/a w/SS396, 155-hp L6, or A.I.R. RPO	$5.30	495 Reported
1966	Chevrolet Chevy II and Nova	Heavy-duty 10-in. clutch (six-cylinder models) RPO	Unknown	Unknown
1967	Chevrolet Chevelle and Malibu SS	HD clutch - n/a w/SS396, 155-hp L6, or A.I.R. RPO	$5.30	1,925 Reported
1967	Chevrolet Chevy II and Nova	Heavy-duty clutch RPO	Unknown	Unknown
1967	Oldsmobile Cutlass, 4-4-2 and Hurst/Olds	Clutch, heavy-duty (included in L78; except with L73) RPO	$5.27	Unknown
1968	Chevrolet Chevelle and Malibu SS	HD clutch - n/a w/SS396, 155-hp L6, or A.I.R. RPO	$5.30	2,291 Reported
1968	Chevrolet Chevy II and Nova	Heavy-duty clutch (90 and 120 hp only) RPO	$5.30	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.