Fits Toyota 2JZ engines. This GSC Power-Division exhaust valve guide seal kit is engineered to provide superior oil control and thermal stability for high-performance 2JZ cylinder heads. These seals are specifically designed for the exhaust side, where temperatures are most extreme.

Constructed from high-grade Viton, these 6.6mm seals offer significantly better resistance to heat and chemical degradation than standard rubber alternatives. This ensures a consistent seal over the valve stem, preventing oil from leaking into the exhaust ports—a common cause of smoke and carbon buildup in performance applications.

• Manufacturer Part Number: 1029
• Material: High-temperature Viton
• Valve Stem Diameter: 6.6mm
• Application: Exhaust side only
• Quantity: Set of 12 seals

Fits Toyota 2JZ engines (GE/GTE). Maintain proper oil control and prevent blue smoke on startup or deceleration with this GSC Power-Division (P-D) 6mm Viton valve seal kit. These seals are engineered from high-grade Viton to withstand the extreme temperatures common in turbocharged 2JZ-GTE or high-revving 2JZ-GE cylinder heads.

Unlike standard rubber components that become brittle over time, Viton remains pliable and effective even after prolonged exposure to high-heat cycles and synthetic oils, ensuring a tight seal against the 6mm valve stem. This kit is a critical upgrade for high-performance builds or as a reliable replacement for worn-out factory seals during a top-end refresh.

• Material: High-temperature resistant Viton
• Valve Stem Diameter: 6mm
• Quantity: Set of 12 seals
• Engine Compatibility: Toyota 2JZ-GE and 2JZ-GTE
• Manufacturer Part Number: 1028

Fits Subaru FA20 and FA20DIT engines.

Maintain peak performance and prevent oil consumption with the GSC Power-Division Viton Valve Stem Seal Set. Engineered specifically for the Subaru FA20 platform, these seals are a critical component for any cylinder head refresh or performance engine build. By using high-grade Viton instead of standard rubber, these seals provide superior resistance to the extreme temperatures and chemicals common in high-output and turbocharged environments.

These 5.5mm seals ensure a tight, reliable fit on the valve stem, preventing oil from leaking into the combustion chamber or exhaust port, which helps eliminate blue exhaust smoke and carbon buildup on valves.

• Material: High-temperature Viton for maximum durability
• Stem Size: 5.5mm
• Application: Subaru FA20 / FA20DIT engines
• Quantity: Complete engine set
• Manufacturer Part Number: 1023

Fits 1999-2015 Subaru Impreza, WRX, WRX STI, and 2005 Saab 9-2X Aero (EJ205 / EJ207 / EJ257).

GSC Power-Division valve stem seals are engineered to withstand the extreme temperatures and high-lift environments of performance-built Subaru engines. These seals are manufactured from Viton, a high-temperature fluoroelastomer that maintains its flexibility and sealing integrity far longer than standard rubber seals, which often become brittle and crack. Replacing your seals with GSC Viton components prevents oil from seeping down the valve guides into the combustion chamber, eliminating blue smoke and carbon buildup on the valves.

• Manufacturer Part Number: 1022
• Material: High-temperature Viton
• Valve Stem Diameter: 6mm
• Engine Compatibility: Subaru EJ205, EJ207, EJ257
• Included: Complete set for one engine

Fits 2006-2015 Mitsubishi Lancer Evolution and Ralliart models.

The GSC Power-Division P-D Valve Stem Seal Set is engineered to provide superior oil control for your Mitsubishi cylinder head. These seals are designed to withstand the extreme thermal loads found in high-performance turbocharged applications, preventing oil from seeping down the valve guides into the combustion chamber. Replacing worn seals is critical for reducing oil consumption, preventing blue smoke at startup, and keeping your intake and exhaust valves free of efficiency-robbing carbon deposits.

• Complete set of 16 seals for intake and exhaust valves
• High-temperature resistant materials for long-term durability in 4B11T and 4G63 applications
• Direct replacement for factory OE valve stem seals
• Manufacturer Part Number: 1010

Vehicle Fitment:

• 2006 Mitsubishi Lancer Evolution (MR, RS, SE)
• 2009-2015 Mitsubishi Lancer Ralliart
• 2010-2011 Mitsubishi Lancer Ralliart Sportback

Maintain precise oil control and cylinder head integrity with the GSC Power-Division Viton 6.6mm Valve Stem Seal Set. Fits select 1990-2006 Mitsubishi Lancer Evolution, Eclipse, Galant VR-4, Eagle Talon, and Plymouth Laser models equipped with the 4G63T engine.

These seals are manufactured from high-grade Viton, a synthetic rubber known for its exceptional thermal stability and resistance to chemical degradation. In high-performance 4G63T builds where increased boost and elevated exhaust gas temperatures (EGTs) are common, Viton provides a significantly more durable solution than standard nitrile or polyacrylate seals. These seals ensure a tight fit against the valve stem to prevent oil from entering the combustion chamber through the guides, reducing smoke and carbon buildup.

• Material: High-temperature Viton synthetic rubber
• Stem Diameter: 6.6mm
• Application: 16-valve 4G63T engines
• Kit Contents: Full engine set
• Manufacturer Part Number: 1002

Maintain precise oil control in your cylinder head with this set of Ferrea VS1021 Viton High-Temp Valve Stem Seals. Designed for high-performance engines where extreme thermal loads are constant, these seals prevent oil from migrating down the valve guide into the combustion chamber or exhaust ports, reducing carbon buildup and smoke.

Constructed from premium Viton material, these seals offer significantly higher resistance to heat and chemical degradation compared to standard OEM rubber. They are engineered to maintain their elasticity and sealing integrity in both intake and exhaust applications, even under high-lift and high-RPM conditions.

• Manufacturer Part Number: VS1021
• Material: High-temperature Viton
• Valve Stem Size: 5/16" / 8mm
• Inside Diameter (ID): .500"
• Compatibility: Suitable for Intake and Exhaust valves
• Quantity: Set of 16 seals

Fits Subaru EJ20 engines with 6mm intake valves.

Maintain precise oil control and protect your combustion chamber with this Ferrea Racing Components Viton Hi-Temp intake valve stem seal set. Specifically engineered for the high-performance demands of the Subaru EJ20 platform, these seals are manufactured from a premium Viton compound. This material provides superior resistance to extreme cylinder head temperatures and chemical degradation, ensuring the seals remain pliable and effective where standard rubber might fail.

By replacing worn or hardened factory seals with these Viton units, you prevent oil from migrating down the valve guide and into the intake port, reducing carbon buildup and oil consumption. This set is designed specifically for the intake side and matches the exact 6mm stem diameter required for a secure fit.

• Manufacturer Part Number: VS1016
• Application: Intake Side Only
• Stem Diameter: 6mm
• Material: High-Temperature Viton
• Quantity: Set of 8 seals

Fits Subaru vehicles equipped with the EJ20 engine.

Maintain precise oil control in your cylinder head with these Ferrea high-temperature exhaust valve stem seals. Specifically engineered for the high-thermal environment of the EJ20 exhaust side, these seals are manufactured from a premium Viton compound. This material is chosen for its superior resistance to heat and chemical degradation, ensuring it maintains its sealing integrity far longer than standard rubber alternatives.

The Ferrea VS1015 seals are designed for 6mm valve stems, providing a consistent wipe and seal during high-RPM operation. These are a critical upgrade for any performance cylinder head build or refresh, preventing oil from leaking into the combustion chamber and reducing oil consumption and smoke.

• Manufacturer Part Number: VS1015
• Material: High-temperature Viton
• Valve Stem Diameter: 6mm
• Position: Exhaust
• Quantity: Set of 8 seals

Maintain precise oil control and valvetrain reliability with this set of Ferrea VS1014 Viton Hi-Temp Intake Valve Stem Seals. Engineered specifically for Nissan VQ35 engines with 6mm valve stems, these seals provide a critical barrier against oil migration into the combustion chamber, preventing carbon buildup and oil consumption.

Fabricated from high-grade Viton, these seals are designed to withstand significantly higher operating temperatures than standard rubber alternatives, making them essential for high-RPM or forced induction builds. The set includes 12 seals, providing a complete solution for the intake side of the cylinder heads.

• Fits Nissan VQ35 engines (Intake Side)
• Engineered for 6mm valve stems
• Material: High-temperature Viton for superior thermal resistance
• Ensures consistent sealing in high-performance environments
• Manufacturer Part Number: VS1014
• Quantity: Set of 12

Fits Nissan VQ35 engines.

Protect your engine from oil consumption and maintain proper cylinder sealing with this Ferrea VS1012 Exhaust Valve Stem Seal Set. Engineered specifically for the high-thermal environment of the exhaust side, these seals are manufactured from premium Viton, a high-temperature fluoroelastomer that resists hardening and cracking even under extreme racing or forced induction conditions.

These seals are designed for 6mm valve stems, providing a precise fit that prevents oil from seeping down the guides into the exhaust port. This ensures a cleaner burn and prevents the build-up of carbon deposits on your valve stems and faces. Whether you are performing a standard refresh or building a high-performance VQ35, these seals offer the durability required for long-term reliability.

• Manufacturer Part Number: VS1012
• Material: High-Temperature Viton
• Valve Stem Diameter: 6mm
• Position: Exhaust
• Quantity: Set of 12

Fits Mitsubishi 4G63 and 4G63T engines.

Maintain precise oil control and protect your engine with Ferrea high-temperature Viton exhaust valve stem seals. These seals are specifically engineered for high-performance Mitsubishi 4G63/4G63T cylinder heads where elevated exhaust temperatures can cause standard rubber seals to harden and fail. By using a premium Viton fluoroelastomer, Ferrea ensures these seals remain pliable and effective under extreme thermal stress.

• Material: High-temperature Viton for superior heat and oil resistance
• Application: Exhaust side valve stems
• Stem Diameter: 6.55mm
• Engine Compatibility: Mitsubishi 4G63 / 4G63T
• Quantity: Set of 8 seals
• Manufacturer Part Number: VS1010

Maintain precise oil control and protect your combustion chamber from contamination with Ferrea Viton Hi-Temp Intake Valve Stem Seals. Specifically engineered for Toyota 2JZ-GE and 2JZ-GTE engines, these seals are a critical component for any high-performance cylinder head rebuild or valvetrain service.

Constructed from premium Viton (fluoroelastomer) material, these seals offer significantly higher thermal resistance and chemical stability compared to standard rubber OE seals. This ensures the valve stem remains properly lubricated while preventing oil from entering the intake runner, even under the extreme temperatures found in high-RPM or forced-induction 2JZ applications.

• Fits Toyota 2JZ-GE and 2JZ-GTE engines (Intake side)
• Sized for 6mm valve stem diameters
• High-temperature Viton material resists degradation from heat and synthetic oils
• Direct replacement for worn or hardened factory seals
• Includes a complete set of 12 seals
• Manufacturer Part Number: VS1009

Fits Toyota 2JZ-GE and 2JZ-GTE engines.

Maintain precise oil control in your valvetrain with Ferrea VS1008 Hi-Temp Exhaust Valve Stem Seals. These seals are engineered specifically for high-performance environments where exhaust gas temperatures can compromise standard rubber seals. Manufactured from high-grade Viton, they offer superior thermal resistance and durability compared to OE components.

Leaking exhaust seals are a primary cause of oil consumption and blue smoke during engine operation. These 6mm seals provide a tight, reliable fit on the valve stem, preventing oil from migrating into the exhaust ports. This set of 12 is designed for a complete exhaust-side refresh on your 2JZ cylinder head.

• Manufacturer Part Number: VS1008
• Material: High-temperature Viton rubber
• Stem Diameter: 6mm
• Application: Exhaust side
• Fitment: Toyota 2JZ-GE and 2JZ-GTE engines
• Quantity: Set of 12

Maintain precise oil control and protect your combustion chamber with this set of eight Ferrea VS1003 intake valve stem seals. Designed specifically for Acura and Honda engines utilizing 5.5mm valve stems, these seals are essential for both high-performance builds and routine cylinder head refreshes.

Constructed from premium Viton, these seals provide superior thermal stability and chemical resistance compared to standard rubber components. This ensures a consistent seal against the valve stem even under high-stress conditions, effectively preventing oil from leaking into the intake tract and causing carbon buildup or exhaust smoke.

• Manufacturer Part Number: VS1003
• Material: High-grade Viton
• Valve Stem Diameter: 5.5mm
• Application: Intake valves
• Quantity: Set of 8 seals
• Compatibility: Select Acura and Honda engines

Maintain precise oil control and engine longevity with this set of 8 Ferrea VS1002 high-temperature exhaust valve stem seals. Designed for performance Acura and Honda cylinder heads utilizing a 5.5mm valve stem, these seals are essential for preventing oil from leaking into the exhaust ports, which can cause excessive smoke and carbon buildup.

• High-Temp Material: Constructed from Viton fluoroelastomer to withstand the extreme thermal loads of the exhaust side.
• Consistent Sealing: Engineered to maintain a tight seal even under high RPM and elevated cylinder pressures.
• Precision Fit: Specifically sized for 5.5mm valve stems to ensure an exact OE-style fitment.
• MPN: VS1002
• Quantity: Includes a complete set of 8 exhaust seals.

Fits select 2011-2020 Subaru (Ascent, BRZ, Crosstrek, Forester, Impreza, Legacy, Outback, WRX, XV Crosstrek), 2013-2016 Scion FR-S, and 2017-2020 Toyota 86.

Fel-Pro valve stem seals are engineered to provide a reliable seal in the professional repair environment, where sealing surfaces are often imperfect. These seals prevent oil from entering the combustion chamber via the valve guides, helping to eliminate blue exhaust smoke and reduce oil consumption. Each set is application-specific, utilizing the correct seal architecture—whether deflector (umbrella), O-ring, or positive seal—required for your engine's specific cylinder head design.

• Precision Engineering: Validated by Fel-Pro engineers for fitment and performance on Subaru FA and FB series engine platforms.
• Premium Materials: Constructed from proprietary materials selected for high-temperature durability and chemical resistance against modern engine oils.
• Installation Protection: Includes a dedicated installation tool to protect the inner seal lip from damage during assembly over the valve stem.
• Complete Set: Part number SS729331 includes the necessary seals for a full valve stem service.

Fits Dodge HEMI engines (6.4L).

COMP Cams Positive Stop PTFE Valve Seals are engineered to provide a superior seal and exceptional durability in high-performance environments. These seals (part number 531-16) are manufactured from chemically resistant PTFE, commonly known as Teflon, which withstands significantly higher temperatures and offers lower friction on the valve stem than standard synthetic rubber alternatives.

The positive stop design ensures that the seal remains firmly and accurately seated on the valve guide, providing consistent oil control even under high-lift or high-RPM conditions. This set includes 16 seals, providing a complete solution for high-performance V8 valvetrain builds.

• Manufacturer Part Number: 531-16
• Material: High-temperature PTFE (Teflon)
• Design: Positive Stop for secure guide location
• Quantity: Set of 16 seals
• Engine Compatibility: Dodge 6.4L HEMI