Kooks 1-3/4" x 3" stainless long tube headers for built 4.6L 3V Mustangs — bigger cam, headwork, supercharger, or anywhere the smaller primary becomes the airflow limit. 16 gauge 304 stainless construction with 3/8" thick laser-cut flanges resists warping under sustained high-output heat. 1-3/4" mandrel-bent primaries preserve flow through every curve.
Fits 2005-2010 Ford Mustang GT with the 4.6L 3V engine and a manual transmission. Requires a Kooks X-pipe with a 3" inlet. Two CAS-109014 oxygen sensor extension harnesses are required if installing on an automatic transmission car — order separately for automatic-trans installs. Round port, stock bolt pattern.
Kooks Headers & Exhaust has been hand-building stainless headers and exhaust systems in Statesville, North Carolina since 1962. Every Kooks header is welded by experienced fabricators in the same shop where the company's racing roots were established. 304 stainless construction stands up to thermal cycling and corrosion that destroys mild steel headers in a few seasons.
All hardware required for installation is included. Pair with a Kooks 3" X-pipe (PN 11313110 or 11313120) or H-pipe (PN 11313410), plus an appropriate cat-back or race tail section downstream.
