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8x Spark Plugs Autolite USA fits: Pontiac Firebird V8 5.0L 1985 - 1986 Engine Code: F or G or H Engine Code: 8 Digit VIN OEM: 41-905, 43TS, R43CTS, R43TK, R43TSK (ACDelco), 19157983, 19300382 (GM)