GSC Power Division Exhaust Valve – +1MM Super Alloy, Set of 8 for 5.0L Coyote Gen 1/2 - GSC2157-8
Designed for 2011–2017 Ford Mustang GT and F-150 models equipped with the 5.0L Coyote Gen 1/2 engine, this set of eight +1MM oversize exhaust valves from GSC Power Division is built to handle high-performance demands with precision and durability. Crafted from super alloy material, these valves are ideal for turbocharged applications and extreme operating conditions.
Unlike factory valves, GSC’s design features a 45° valve seat angle (compared to the OEM’s 40°), which requires a valve job to ensure proper sealing and valvetrain geometry. Using advanced 3D modeling and simulation software, GSC developed a high-flow valve head that minimizes distortion under pressure—delivering consistent performance and reliable sealing throughout the valve’s lifespan.
Key Features:
- Improved Airflow: Optimized valve head promotes better engine breathing and power
- Back-Cut Profile: Reduces valve mass to support higher RPM operation
- Micro-Polished Stems: Minimize oil retention and reduce friction for smoother guide movement
- Super Alloy Build: Engineered to endure high temperatures and stress in turbo setups
- Stellite-Tipped Ends: Hardened or fused tips resist wear and maintain geometry
- OEM-Compatible Locks: Works with factory keeper systems; new locks recommended for performance builds
- Built for Reliability: Backed by GSC’s reputation for precision and long-term durability
Valve Dimensions:
- Head Diameter: 1.289 in / 32.75 mm
- Total Length: 4.272 in / 108.5 mm
- Stem Diameter: 0.235 in / 5.96 mm
- Sold as a complete set of 8
Fitment:
- 2011 Ford Mustang GT
- 2012 Ford Mustang GT
- 2013 Ford Mustang GT
- 2014 Ford Mustang GT
- 2012 Ford Mustang Boss 302
- 2013 Ford Mustang Boss 302
- 2015 Ford Mustang GT
- 2016 Ford Mustang GT
- 2017 Ford Mustang GT
- 2011 Ford F-150 5.0L
- 2012 Ford F-150 5.0L
- 2013 Ford F-150 5.0L
- 2014 Ford F-150 5.0L
- 2015 Ford F-150 5.0L
- 2016 Ford F-150 5.0L
- 2017 Ford F-150 5.0L
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
