This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Buick Century: 1979, 1980] - [Buick Electra: 1980] - [Buick Estate Wagon: 1980] - [Buick LeSabre: 1975, 1977, 1978, 1979, 1980] - [Buick Regal: 1979, 1980] - [Buick Skylark: 1977] - [Oldsmobile 98: 1975] - [Oldsmobile Custom Cruiser: 1975] - [Oldsmobile Delta 88: 1975, 1979] - [Pontiac Bonneville: 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980] - [Pontiac Catalina: 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980] - [Pontiac Executive: 1967, 1968, 1969, 1970] - [Pontiac Firebird: 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981] - [Pontiac Grand Am: 1973, 1974, 1975, 1978, 1979, 1980] - [Pontiac Grand LeMans: 1975, 1976, 1977, 1979, 1980, 1981] - [Pontiac Grand Prix: 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980] - [Pontiac Grand Safari: 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978] - [Pontiac Grandville: 1971, 1972, 1973, 1974, 1975] - [Pontiac GTO: 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973] - [Pontiac LeMans: 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1979, 1980, 1981] - [Pontiac Star Chief: 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966] - [Pontiac Tempest: 1961, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970] - [Pontiac Ventura: 1960, 1961, 1977]