- 1970s–1981 Factory-verifiedGM Heritage factory kit — 1981 Chevrolet Camaro, p.39.
YF5 Factory-verified
Also described as California emission equipment/certificationCalifornia Assembly Line Emission TestCalifornia Emission Test/EquipmentCalifornia Emission Test/CertificationCalifornia Emissions CertificationEmission testedCalifornia assembly line emission testCalifornia vehicle emissions registration
Documented applications
- 1972 Factory-verifiedGM Heritage factory kit — 1972 Chevrolet Chevelle, p.54.
- 1972 Factory-verified
$15.80; 1,967 built
GM Heritage factory kit — 1972 Chevrolet Corvette, p.5. - 1973 Factory-verified
$15.00; 3,008 built
GM Heritage factory kit — 1973 Chevrolet Corvette, p.34. - 1974 Factory-verified
$20.00; qty NA
GM Heritage factory kit — 1974 Chevrolet Corvette, p.30. - 1975 Factory-verified
$20.00; 3,037 built
GM Heritage factory kit — 1975 Chevrolet Corvette, p.7. - 1976 Factory-verified
$50.00; 3,527 built
GM Heritage factory kit — 1976 Chevrolet Corvette, p.22. - 1977 Factory-verified
$70.00; 4,084 built
GM Heritage factory kit — 1977 Chevrolet Corvette, p.48. - 1978 Disputed
3,405 built; price disputed: CAC page shows $70, CorvSport and CorvetteStory both show $75; factory kit confirms RPO YF5 but its price column is not legible, so the split is unresolved
GM Heritage factory kit — 1978 Chevrolet Corvette, p.22. - 1979 Factory-verified
$83.00; 3,798 built
GM Heritage factory kit — 1979 Chevrolet Corvette, p.7. - 1980 Factory-verified
$250.00; 3,221 built (required LG4 305ci engine)
GM Heritage factory kit — 1980 Chevrolet Corvette, p.62. - 1981 Factory-verified
$46.00; 4,951 built (L81 was 50-state legal, so no engine substitution needed)
GM Heritage factory kit — 1981 Chevrolet Corvette, p.5. - 1982 Factory-verified
$46.00; 4,951 built (both figures identical to 1981 in all sources consulted — as printed)
GM Heritage factory kit — 1982 Chevrolet Corvette, p.30.
- 1963–70s (varies) Confirmed
- 1972, 1975–1978 Factory-verifiedGM Heritage factory kit — 1972 Chevrolet Nova, p.61.GM Heritage factory kit — 1978 Chevrolet Nova, p.56.
This page aggregates every documented appearance of YF5 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.