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The JBA Cat4Ward header for 1988–1993 GM trucks with 7.4L BBC engines and A.I.R. uses shorty-style primaries to improve exhaust flow and increase engine efficiency versus stock manifolds. Built from mandrel-bent stainless tubing with 3/8" thick machined flanges, oversized ports and a Firecone collector, it includes factory-style emission connections and hardware for a professional, no-leak installation.
JBA 88-93 GM Truck 7.4L BBC w/A.I.R. 1-3/4in Primary Raw 409SS Cat4Ward Header
