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The JBA Cat4Ward header for 2001–2003 GM trucks with the 8.1L BBC (without EGR/A.I.R.) uses 1-3/4" primaries and a silver-coated finish to balance corrosion resistance with improved flow. Mandrel-bent tubing, 3/8" machined flanges and the Firecone collector work together to reduce restriction and boost torque in real-world driving. Factory-style emission connections and high-quality hardware ensure a professional, leak-free installation.
JBA 01-03 Gm Truck 8.1L BBC w/o EGR/A.I.R. 1-3/4in Primary Silver Ctd Cat4Ward Header
