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The JBA Cat4Ward header for 1999–2002 GM trucks with 6.0L LS engines without A.I.R. and with EGR uses 1-5/8" primaries to enhance exhaust flow and responsiveness. Made from 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 secure, no-leak fit.
JBA 99-02 GM Truck 6.0L LS w/o A.I.R. w/EGR 1-5/8in Primary Raw 409SS Cat4Ward Header
