1-3/4" Long Tube Headers

Each header features 1-3/4" mandrel-bent primaries for optimal exhaust flow, leading to a 3" collector outlet. The 3/8" thick laser-cut flanges and round port design maintain a stock bolt pattern for straightforward installation. These long tube headers are specifically designed for the 2015-2026 Ford Mustang GT models equipped with the 5.0L 4V engine. Installation includes necessary gaskets (PN 755392) and specific oxygen sensor extension harnesses: CAS-105979 for 2015-2017 models and CAS-109677-8 for 2018+ models. Additionally, BK109 & BK114 Bolt Kits are required for installation. Installation note: These headers require Kooks Front Connection pipes and either OEM Adapters or an X-Pipe or H-Pipe exhaust system. They are also available as part of a complete Header and Connection Kit (Part# 1151H232). Be advised that these are intended for racing competition and may not be legal for use on public highways. An estimated ship window of 4-6 weeks applies as they are built to order.