GSC Power Division Viton Valve Stem Seals

2013–2020 Subaru BRZ / 2013–2016 Scion FR-S / 2017–2020 Toyota 86 FA Engine

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Overview:

The GSC Power Division Viton Valve Stem Seals are a premium upgrade designed specifically for the Subaru/Scion FA engine found in the Toyota 86, Subaru BRZ, and Scion FR-S models within the specified year ranges. These valve stem seals replace the standard OEM seals with durable Viton material, which offers superior resistance to heat and wear. This upgrade is ideal for enthusiasts who are increasing their engine’s performance and require components that can withstand higher operating temperatures without compromising reliability.

Whether you are a daily driver looking to maintain engine longevity or a performance enthusiast pushing your FA engine harder, these valve stem seals provide enhanced sealing capabilities to reduce oil leakage and improve overall engine efficiency.

Key Features:

Engineered to meet the demands of higher-performance applications, these valve stem seals offer several important benefits:

• Constructed from high-quality Viton material for excellent heat resistance and durability compared to standard OEM seals.
• Designed specifically for the Subaru/Scion FA engine to ensure precise fitment and reliable sealing performance.
• Helps prevent oil leakage past the valve stems, reducing oil consumption and minimizing carbon buildup on valves.
• Supports increased engine temperatures commonly experienced in tuned or modified engines.
• Sold as a complete set of 16 seals, covering all valves for a full engine rebuild or maintenance service.
• Improves engine reliability and longevity under spirited driving or track conditions.
• Direct replacement for OEM valve stem seals, maintaining factory specifications and fitment.

Construction & Design:

The valve stem seals are manufactured using Viton, a fluorocarbon-based synthetic rubber known for its exceptional resistance to heat, chemicals, and oil degradation. This material choice ensures the seals maintain their elasticity and sealing properties even under elevated temperatures generated by performance upgrades. The seals are precision-engineered to fit the FA engine’s valve stems perfectly, providing a tight seal that prevents oil from leaking into the combustion chamber while allowing proper valve stem lubrication.

This upgrade is particularly beneficial for engines subjected to higher boost levels, aggressive tuning, or extended high-RPM operation, where standard seals may fail prematurely due to heat and wear.

Installation & Fitment:

The GSC Power Division Viton Valve Stem Seals are designed as a direct OEM replacement for the Subaru BRZ (2013–2020), Scion FR-S (2013–2016), and Toyota 86 (2017–2020) equipped with the FA engine. Installation requires valve cover removal and valve train disassembly, so it is recommended for experienced mechanics or professional installation.

No modifications to the engine or additional tuning are necessary when installing these seals. They fit precisely using factory mounting points and maintain original engine specifications.

• Direct fit for Subaru BRZ, Scion FR-S, and Toyota 86 FA engines within specified years.
• No cutting, drilling, or special tuning required.
• Sold as a full set of 16 seals for complete valve coverage.

What’s Included

• Set of 16 Viton valve stem seals designed for the FA engine.

Ideal For:

This valve stem seal kit is ideal for:

• Performance enthusiasts upgrading their Subaru BRZ, Scion FR-S, or Toyota 86 engines.
• Drivers increasing boost or power output who need improved heat resistance in engine seals.
• Anyone performing a valve job or engine rebuild on the FA engine seeking durable, long-lasting seals.
• Daily drivers wanting to maintain engine reliability and reduce oil consumption over time.

GSC Power Division specializes in high-performance camshafts and valvetrain components for import engines, including Subaru, Mitsubishi, Toyota, and Nissan models. Their products are designed to enhance engine performance in both street and race applications, offering improved mid-range and top-end power without sacrificing low-end torque.