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The JBA Cat4Ward shorty header for 1999–2001 GM trucks with 4.8L or 5.3L LS engines (without A.I.R., with EGR) uses 1-5/8" primaries to improve exhaust flow and engine efficiency. It features mandrel-bent stainless tubing, 3/8" machined flanges and the Firecone collector to maximize torque in typical driving. Factory-style emission connections, oversized ports and robust hardware deliver a professional, no-leak installation.
JBA 99-01 GM Truck 4.8L/5.3L LS w/o A.I.R. w/EGR 1-5/8in Primary Silver Ctd Cat4Ward Header
