GSC Power Division Exhaust Valve – +1MM Stainless Steel, Set of 8 for Gen 3 Coyote 5.0L - GSC2163-8
Engineered for 2018–2025 Ford Mustang GT models equipped with the Gen 3 5.0L Coyote engine, this set of eight +1MM oversized stainless steel exhaust valves from GSC Power Division is built for high-performance durability and optimized flow. Each valve features a 45° seat contact angle—an upgrade from the OEM 40°—which requires a valve job for proper sealing and geometry alignment.
Developed using advanced 3D design and simulation software, GSC’s valve heads are flow-tested in real-world applications to ensure maximum airflow and minimal distortion. The result is a stronger, more efficient valve that maintains consistent sealing under extreme conditions and delivers long-term reliability.
Key Features:
- Back-Cut Profile: Reduces valve mass to support higher RPM operation
- Micro-Polished Stem: Minimizes oil retention and drag for smoother guide movement
- Durable Stainless Steel: Made from modified 23-8n alloy for strength and heat resistance
- Stellite-Tipped Ends: Hardened or fused tips resist wear and maintain geometry within 5 Rockwell C
- Balanced Keeper Groove: Calibrated to equalize spring pressure and reduce the need for shims
- 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
