Home/Shop by Part/Engine & Engine Management/Tune Up & Maintenance/Spark Plugs Narrow The Number Of Models Shown By Telling Us The Year Filter Models by Year Year 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971 1970 1969 1968 1967 1966 1965 1964 1961 Choose your Checker Model M Marathon Spark Plugs