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The Cat4Ward header for 1991–1999 Jeep 4.0L features 1-1/2" primaries crafted from durable 409 stainless to improve exhaust flow over stock manifolds. JBA's design uses 3/8" thick machined flanges, oversized ports, mandrel-bent tubing and a Firecone collector. Factory-style emission connections and high-quality hardware are included for a professional, no-leak installation.
JBA 91-99 Jeep 4.0L 1-1/2in Primary Raw 409SS Cat4Ward Header
