New old stock AC delco R46S spark plugs.Set of 8 plugs..... Early 4 green ring style not current replacement type
listed as fitting
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1971 Pontaic Firebird Grand Prix Lemans GTO v8 400 v8 455
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1970 Pontiac Lemans GTO Boneville Catalina Grand prix 455 cu in
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1967 1968 1969 Pontiac Bonneville Catalina 400 cu in 4bbl
