JBA Cat4Ward 1400S Shorty Headers - 1-5/8in Primary Raw 409SS for 2004-2015 Nissan/Infiniti (5.6L)

Fits select 2004-2015 Nissan Titan, Armada, Pathfinder, and Infiniti QX56 (5.6L VK56DE).

JBA Cat4Ward shorty headers are engineered to replace restrictive factory cast iron manifolds, improving exhaust scavenging and engine efficiency for towing, off-road use, and daily driving. These headers feature JBA's proprietary Firecone collector, a race-proven design that merges exhaust pulses to minimize turbulence and maximize torque. Constructed from mandrel-bent 409 stainless steel tubing, these headers are designed to withstand the thermal stress of heavy-duty use while maintaining consistent flow.

Each set is built with 3/8-inch thick CNC machined flanges to prevent warping and ensure a flat sealing surface against the cylinder head. The oversized oval exhaust ports accommodate high-flow requirements, while factory-style emission connections allow for a straightforward installation that retains original sensors and equipment.

• Manufacturer Part Number: 1400S
• Primary Tube Diameter: 1-5/8 inch
• Material: Raw 409 Stainless Steel
• Flange Thickness: 3/8 inch machined steel
• Collector Style: Proprietary JBA Firecone
• Port Shape: Oval Port
• Hardware: High-quality installation hardware included