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The JBA Cat4Ward header for 2004–2015 Nissan 5.6L VK56DE (oval port) uses 1-5/8" primaries to reduce backpressure and improve engine efficiency. Built from durable 409 stainless, it features JBA's Firecone collector, mandrel-bent tubes, 3/8" machined flanges and oversized ports. Factory-style emission connections and quality hardware are included for a professional, leak-free installation.
JBA 04-15 Nissan 5.6L VK56DE Oval Port 1-5/8in Primary Raw 409SS Cat4Ward Header
