1-3/4" x 1-7/8" x 3" SS Stepped Headers. 2015-2020 Shelby GT350.

1-3/4" x 1-7/8" x 3" Stainless Steel Long Tube Stepped Headers. 2015-2023 Ford Mustang Shelby GT350 5.2L 4V

• 304 Stainless Steel Construction
• 3/8" Thick Laser Cut Flanges
• Round Port
• Stock Bolt Pattern
• 1-3/4" x 1-7/8" Mandrel Bent Primaries
• One-Piece Collector with 3" Ball and Socket Outlet
• Includes 755989 Gaskets, BK109 Header Bolt Kit, BK114 Ball and Socket Bolt Kit, and 2) CAS-105979 Oxygen Sensor Harness Extensions required for Installation.
• Does not connect directly to OEM Exhaust. Use of Headers requires Kooks Exhaust