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The JBA Cat4Ward header for 2014–2020 GM trucks with 4.3L V6 engines uses larger 1-5/8" primaries to improve scavenging and midrange torque. Built from durable 409 stainless with mandrel-bent tubing, it features JBA's Firecone collector, 3/8" machined flanges with oversized ports, extra-thick collector domes and includes factory-style emission connections and high-quality hardware for a clean, no-leak installation.
JBA 14-20 GM Truck 4.3L V6 1-5/8in Primary Raw 409SS Cat4Ward Header
