GSC Power Division Exhaust Valve – +1MM Super Alloy, Set of 8 for Gen 3 Coyote 5.0L - GSC2167-8
Built for 2018–2023 Ford Mustang GT models equipped with the Gen 3 5.0L Coyote engine, this set of eight +1MM oversized exhaust valves from GSC Power Division is engineered for high-performance durability in turbocharged and high-RPM applications. Each valve is crafted from heat-resistant super alloy and designed to deliver consistent performance under extreme conditions.
These valves feature a 45° seat contact angle—different from the OEM’s 40°—which requires a valve job for proper sealing and optimized valvetrain geometry. Using advanced 3D modeling and simulation tools, GSC has developed a high-flow valve head that’s tested in application-specific environments to ensure maximum airflow and minimal distortion. The result is improved sealing, better power delivery, and long-term reliability.
Key Features:
- Optimized Airflow: Enhanced valve head design improves engine breathing and output
- Back-Cut Profile: Reduces valve mass to support higher RPM operation
- Micro-Polished Stem: Minimizes oil retention and drag for smoother guide movement
- Super Alloy Build: Withstands extreme heat and turbocharged stress
- Stellite-Tipped Ends: Hardened or fused tips resist wear and maintain geometry near the rocker or tappet
- 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: 1.299 in / 33.00 mm
- Total Length: 4.315 in / 109.60 mm
- Stem Diameter: 0.235 in / 5.96 mm
- Sold as a complete set of 8
Fitment:
- 2018 Ford Mustang GT
- 2019 Ford Mustang GT
- 2020 Ford Mustang GT
- 2021 Ford Mustang GT
- 2022 Ford Mustang GT
- 2023 Ford Mustang GT
- 2018 Ford F-150 5.0L
- 2019 Ford F-150 5.0L
- 2020 Ford F-150 5.0L
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
