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8x Spark Plugs Autolite USA fits: Chevrolet K5 Blazer V8 5.0L 1986 - 1986 Chevrolet K5 Blazer V8 5.7L 1986 - 1986 OEM: 41-905, 43TS, R43CTS, R43TK, R43TSK (ACDelco), 19157983, 19300382 (GM)