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The JBA Cat4Ward header for 1987–1991 Chevrolet Blazer and applicable GM trucks with 5.0L/5.7L SBC engines (without A.I.R.) is a shorty-style replacement that increases exhaust flow and efficiency. Built from mandrel-bent stainless tubing with 3/8" machined flanges, oversized ports and the Firecone collector, it includes factory-style emission connections and quality hardware for a professional install.
JBA 87-91 Chevrolet Blazer 5.0L/5.7L w/o A.I.R. 1-5/8in Primary Raw 409SS Cat4Ward Header
