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The JBA Cat4Ward header for 2001–2003 GM trucks with the 8.1L BBC (without EGR/A.I.R.) features 1-3/4" primaries in raw 409 stainless to open exhaust flow for heavy-duty and towing use. It combines mandrel-bent tubing, 3/8" machined flanges and JBA's Firecone collector to increase power and torque where you drive most. Factory-style emission connections, oversized ports and heavy-duty collector domes support a durable, professional installation.
JBA 01-03 Gm Truck 8.1L BBC w/o EGR/A.I.R. 1-3/4in Primary Raw 409SS Cat4Ward Header
