GSC Power Division Exhaust Valve – +1MM Stainless Steel, Single for Gen 3 Coyote 5.0L - GSC2163-01
This single +1MM oversize stainless steel exhaust valve from GSC Power Division is designed for Gen 3 Ford Coyote 5.0L engines, including Mustang GT and F-150 platforms. Built to handle high-performance demands, it features a revised 45° valve seat angle—different from the OEM’s 40°—which requires a valve job for proper sealing and valvetrain geometry.
Crafted using advanced 3D modeling and simulation tools, GSC’s valve head design delivers superior airflow and structural integrity. Each prototype is flow-tested in its specific application to ensure maximum performance. Thanks to reduced face distortion under pressure, these valves maintain better sealing and consistent output even under extreme conditions.
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 individually
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
