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The JBA Cat4Ward shorty header for 2011–2017 Ford F-150 with 3.5L/3.7L V6 engines uses 1-5/8" primaries in raw 409 stainless. These headers reduce restriction versus factory manifolds to improve exhaust flow and engine efficiency. The system pairs a Firecone collector with mandrel-bent stainless tubing, 3/8" machined flanges, oversized ports and factory-style emission connections for a durable, leak-resistant assembly and professional fitment.
JBA 11-17 Ford F-150 3.5/3.7L V6 1-5/8in Primary Raw 409SS Cat4Ward Header
