General Motors option code

U21

U21: a General Motors factory option code reused for more than one part across 1967–1985 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 · 6 model years · 0 sources

Brochure page: red 1967 4-4-2 hardtop at night with engine, drivetrain and torque-curve panels — 1967 Oldsmobile 4-4-2, from the 1967 4-4-2 brochure ("The road car / rally machine in street clothing")

Every sourced appearance

Year	Model	As named that year	Price	Installs
1967	Oldsmobile Cutlass, 4-4-2 and Hurst/Olds	Rocket Rally Pac (includes U35 clock) RPO	$84.26	Unknown
1968	Oldsmobile Cutlass, 4-4-2 and Hurst/Olds	Rocket Rally Pac (includes U35) RPO	$84.26	Unknown
1969	Oldsmobile Cutlass, 4-4-2 and Hurst/Olds	Rocket Rally Pac (includes U35) RPO	$84.26	Unknown
1970	Oldsmobile Cutlass, 4-4-2 and Hurst/Olds	Rocket Rally Pac (includes U35; N.A. with T81) RPO	$84.26	Unknown
1971	Oldsmobile Cutlass, 4-4-2 and Hurst/Olds	Rocket Rallye Pac (includes U35) RPO	$84.26	Unknown
1985	Pontiac Grand Prix	Rally gages RPO	Unknown	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.