Engineered for high-heat environments and extreme cylinder pressures, this set of 8 Ferrea Super Alloy exhaust valves (MPN: F1892P) is a direct performance upgrade for Chevrolet LS1 engines. These valves are manufactured using Ferrea's proprietary Super Alloy, specifically designed to withstand the thermal loads found in turbocharged, supercharged, or nitrous-fed applications where standard stainless steel may fail.

The S-Flo (Super Flow) design features a modified tulip shape to reduce airflow restriction, while the radial groove ensures precise retainer fitment and improved valvetrain stability at high RPM. Each valve is CNC-machined to exact tolerances for consistent seating and heat dissipation.

• Head Diameter: 1.600 in
• Stem Diameter: 0.313 in
• Overall Length: 4.915 in
• Seat Angle: 24 Degrees
• Groove Type: Radial Groove
• Material: Super Alloy
• Quantity: Set of 8
• Part Number: F1892P

Secure your valvetrain with Ferrea Radial Groove Steel Valve Locks, specifically engineered for high-performance Subaru builds. These 6mm locks utilize a radial groove design, which is preferred by engine builders for its ability to distribute clamping force more evenly across the valve stem compared to traditional square-cut locks. This reduces stress concentrations, minimizing the risk of stem failure during high-RPM operation and heavy valve spring loads.

Precision-machined from high-tensile steel, these locks provide a reliable, stable interface between the valve and the retainer. Whether you are performing a standard refresh or a full performance build, these components ensure consistent valvetrain geometry and timing accuracy.

• Manufacturer Part Number: K10061
• Valve Stem Diameter: 6mm
• Lock Style: Radial Groove
• Material: Precision-Machined Steel
• Quantity: Complete Set of 16

Fits Ford 5.4L 32V engines.

Engineered to withstand the extreme thermal loads and cylinder pressures of high-performance racing, this set of 16 Ferrea F2164P Super-Alloy exhaust valves is built for durability in forced induction or high-RPM Ford modular applications. These valves utilize Ferrea's proprietary Super-Alloy material, specifically designed to handle exhaust gas temperatures that exceed the limits of standard stainless steel. The design features a "Flo" undercut stem to optimize exhaust gas flow and a 15-degree seat angle for a precise, reliable seal.

• Part Number: F2164P
• Material: Heat-resistant Super-Alloy
• Head Diameter: 1.26 in
• Stem Diameter: 0.275 in
• Overall Length: 4.635 in
• Seat Angle: 15 Degrees
• Lock Type: 3 Radial Grooves
• Quantity: Set of 16

Each valve is precision-machined with triple radial grooves to ensure secure lock engagement, providing the stability required for aggressive valvetrain setups.

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.

These Ferrea intake valve guides are engineered specifically for the Nissan GT-R VR38DETT engine, providing the precision and durability required for high-performance and racing applications. Valve guides are critical for maintaining exact valve stem alignment and facilitating efficient heat transfer from the valves to the cylinder head. Manufactured to exacting tolerances, these standard-size guides minimize friction and resist wear under the high-heat conditions common in forced induction VR38 builds.

• Engine Compatibility: Nissan VR38DETT
• Component Type: Intake Valve Guide
• Size: Standard (Std)
• Quantity: Set of 12
• Manufacturer Part Number: VG1085
• Installation Note: Must be used with Ferrea valve seal part number VS1014

Fits Nissan GT-R (VR38DETT).

Maintain precise valve stem alignment and critical thermal transfer with this set of 12 Ferrea Standard Exhaust Valve Guides (VG1083). Engineered for high-performance applications, these guides replace worn factory components to restore the tight tolerances necessary for stable valve motion and consistent sealing under the extreme pressures of the VR38DETT engine.

These standard-sized guides are specifically machined for the exhaust side of the cylinder head. For a proper installation and reliable performance, Ferrea requires these guides to be used with their VS1012 valve seals.

• Manufacturer Part Number: VG1083
• Position: Exhaust
• Sizing: Standard
• Engine Compatibility: Nissan 3.8L VR38DETT
• Quantity: Set of 12
• Required Hardware: Must be used with Ferrea VS1012 valve seals

Ensure precise valvetrain alignment and long-term durability in your Subaru EJ20 engine with Ferrea VG1073 intake valve guides. These standard-sized guides are engineered to replace worn factory components, providing the tight tolerances necessary for stable valve motion during high-RPM operation and high-performance rebuilds.

Precision-machined to exacting standards, these guides optimize heat transfer from the valve stem to the cylinder head, helping to prevent stem seizing and premature wear. Designed specifically for intake side applications, they provide a stable foundation for the valves to maintain a consistent seat seal for optimal compression.

• Engine Compatibility: Subaru EJ20
• Manufacturer Part Number: VG1073
• Type: Intake Valve Guide
• Size: Standard (Std)
• Quantity: Set of 8
• Installation Requirement: Must be used with Ferrea valve seals (Part No. VS1016)

Fits Subaru EJ20 engines.

This set of eight Ferrea standard exhaust valve guides (VG1071) is engineered to replace worn factory guides with high-precision components that maintain strict tolerances. Designed specifically for the exhaust side of the Subaru EJ20 cylinder head, these guides ensure proper valve stem alignment and efficient heat transfer from the valve to the head, which is critical for maintaining performance and avoiding valve-train failure.

• Standard (Std) sizing for direct-fit exhaust valve applications
• Precision-machined for consistent oil retention and reduced friction
• Specifically recommended for use with Ferrea VS1015 valve seals
• Engineered to withstand the high thermal loads of performance exhaust ports
• Full set of 8 guides included
• Manufacturer Part Number: VG1071

Ensure precise valve stem alignment and superior heat dissipation in your cylinder head with this set of 8 Ferrea standard exhaust valve guides. Engineered specifically for the Acura and Honda K20 series (2.0L) engines, these guides are manufactured to exacting tolerances to prevent valve play and maintain a consistent seal under high-stress operating conditions.

• Engine Fitment: Acura/Honda K20 (2.0L) series.
• Guide Type: Standard size exhaust valve guide.
• Quantity: Full set of 8 guides for one cylinder head.
• Hardware Note: Designed for use with Ferrea VS1002 valve seals.
• Manufacturer Part Number: VG1064

Ensure precise valve stem alignment and optimal heat dissipation with this set of 8 Ferrea standard size intake valve guides (VG1062). Designed specifically for Acura and Honda K20 series engines, these guides are engineered to replace worn OE components, providing the tight tolerances necessary for both high-performance and daily driving applications.

• Fits: Acura and Honda K20 engines
• Component: Intake Valve Guides
• Size: Standard (Std)
• Quantity: Set of 8
• Manufacturer Part Number: VG1062
• Fitment Note: Must be used with Ferrea VS1003 valve seals

Optimized for high-performance Chevrolet LS1 and LS7 cylinder heads, this set of 8 Ferrea valve guides (MPN VG1061) provides the precision alignment and heat dissipation necessary for high-RPM and racing applications. These guides are engineered to replace worn factory components, ensuring stable valve movement and maintaining critical seat-to-face contact.

Suitable for both intake and exhaust positions, these guides are machined to exacting tolerances to minimize stem-to-guide clearance issues. This specific set is designed for use with 5/16" valve stems and features a .502" outer diameter for a secure press-fit into the cylinder head boss.

• Fits Chevrolet LS1 and LS7 engines
• Valve Stem Size: 5/16"
• Outer Diameter: .502"
• Overall Length: 2.000"
• Top ID: .500"
• Application: Intake or Exhaust
• Manufacturer Part Number: VG1061
• Quantity: Set of 8
• Note: Requires Ferrea VS1021 valve seals for installation

Fits Mitsubishi 4G63 and 4G63T engines.

Ferrea VG1048 standard size exhaust valve guides are precision-engineered to provide superior heat dissipation and wear resistance in high-performance cylinder heads. These guides ensure precise valve stem alignment, which is critical for maintaining valve seat integrity and engine compression under high-boost or high-RPM conditions.

• Part Number: VG1048
• Engine Compatibility: Mitsubishi 4G63 / 4G63T
• Type: Standard Size Exhaust Valve Guide
• Quantity: Complete set of 8 guides
• Installation Note: Specifically designed for use with Ferrea valve seals (Part Number VS1010)

Precision-machined for the Toyota 2JZGE and 2JZGTE cylinder heads, these Ferrea standard-size intake valve guides provide the tight tolerances and durability required for high-performance engine builds. They replace worn or damaged factory guides to ensure proper valve stem alignment, improving heat dissipation and maintaining consistent valve seating even under extreme cylinder pressures.

• Application: Toyota 2JZGE and 2JZGTE engines
• Position: Intake
• Size: Standard (Std)
• Quantity: Set of 12 guides
• Note: Designed for use with Ferrea valve seals (VS1009)
• Manufacturer Part Number: VG1035

This set of 12 Ferrea (VG1034) standard-sized exhaust valve guides is engineered for Toyota 2JZGE and 2JZGTE cylinder heads. These precision-machined guides are designed to replace worn factory components, providing the exact stem-to-guide clearances and heat dissipation necessary for high-performance applications.

• Fits Toyota 2JZGE and 2JZGTE engines
• Standard (Std) outer diameter for reliable fitment in factory-spec heads
• Engineered for superior thermal conductivity and wear resistance
• Manufacturer Part Number: VG1034
• Quantity: Set of 12 exhaust valve guides
• Technical Note: Must be used with Ferrea VS1008 valve seals

Restore valvetrain precision in your Acura or Honda engine with this set of eight Ferrea standard intake valve guides. These guides provide the stable alignment necessary for optimal valve seating and consistent heat transfer, making them an essential component for high-performance cylinder head builds or standard refreshes.

Engineered to exacting tolerances, the VG1002 guides ensure smooth valve stem operation and reduced lateral movement to minimize wear. These standard-sized intake guides are specifically designed to be used in conjunction with Ferrea valve seals (part number VS1003) to ensure a proper fit and reliable oil control.

• Manufacturer Part Number: VG1002
• Fitment: Select Acura and Honda applications
• Component Type: Standard Intake Valve Guides
• Quantity: Set of 8
• Compatibility: Specifically designed for use with Ferrea VS1003 seals

Fits select Honda and Acura models.

This set of eight Ferrea VG1000 standard exhaust valve guides is engineered for precision and durability in high-performance cylinder heads. These guides provide the essential support and heat dissipation required for exhaust valve stems, ensuring consistent valve-to-seat alignment and preventing premature guide wear. Manufactured to exacting tolerances, these standard-sized guides replace worn factory components to restore cylinder head efficiency and stability under high-stress conditions.

• Part Number: VG1000
• Quantity: Set of 8
• Type: Exhaust Valve Guide
• Size: Standard
• Installation Note: Must be used with Ferrea VS1002 valve seals

Fits Audi 2.0T FSI DOHC 16-valve engines.

Ferrea Racing Components lifter shims are engineered to provide precise valvetrain adjustments for high-performance Audi 2.0T FSI builds. These components are essential for tuners and engine builders who need to maintain exact valve lash and proper valvetrain geometry, especially when installing aftermarket camshafts or performance valves.

Manufactured to extremely tight tolerances, these shims ensure consistent seat pressure and timing across the entire cylinder head. This complete set provides the necessary hardware for a full 16-valve refresh or upgrade, replacing worn components with Ferrea's proven racing-grade materials.

• Designed specifically for Audi 2.0T FSI DOHC 16V valvetrains
• Ensures accurate valve lash and optimal geometry
• High-strength construction for reliable performance under high RPM
• Complete set of 16 shims for full head coverage
• Manufacturer Part Number: LP1105

Fits 2017-2018 Audi models equipped with the 2.5L TFSI engine.

The Ferrea Racing Components Single Valve Spring Kit (KT4042) is engineered to provide the valvetrain stability required for high-performance 2.5L TFSI builds. Designed as a direct replacement for factory springs, these components are manufactured from high-tensile strength alloys to withstand the increased thermal and mechanical stresses found in turbocharged applications.

• Precision-wound from premium silicon magnesium chrome alloy
• Heat-treated and stress-relieved for long-term durability and fatigue resistance
• Provides consistent seat and open pressures to prevent valve float at high RPM
• Designed specifically for the Audi 2.5L TFSI cylinder head architecture
• Manufacturer Part Number: KT4042

Fits Acura K20 series engines used in high-performance and competitive drag racing applications.

The Ferrea KT4035 High Lift Drag Racing Dual Spring Kit is engineered for high-RPM stability and the extreme demands of drag racing. By utilizing a dual-spring architecture, this kit provides the necessary seat pressure and rate to control valve motion when using high-lift camshaft profiles, preventing catastrophic valve float and ensuring consistent valvetrain timing.

• Designed specifically for high-lift drag racing camshafts
• Provides superior harmonic damping and stability at high RPM
• High-tensile premium steel construction for maximum durability
• Compatible with Acura K20 cylinder heads
• Manufacturer Part Number: KT4035

Fits 2017-2023 Honda Civic Type R (K20C1 Turbo).

Ensure valvetrain stability and prevent valve float in your high-output K20C1 engine with the Ferrea Single Valve Spring Kit. This kit is specifically engineered to handle the increased cylinder pressures and thermal loads associated with turbocharged applications. By replacing the factory springs with Ferrea’s precision-wound units, you maintain better control over valve harmonics and seating, which is critical for reliability during high-RPM track use or increased boost levels.

• Designed specifically for the Honda K20C1 turbo engine
• Provides increased seat pressure over OEM for better valve control
• Manufactured from high-tensile, fatigue-resistant steel alloys
• Compatible with performance valvetrain upgrades
• Manufacturer Part Number: KT4033

Fits BMW vehicles equipped with the N54 3.0L twin-turbocharged inline-six engine.

The Ferrea KT4026 Single Valve Spring Kit is engineered to provide the increased seat pressure and spring rate required for high-performance N54 builds. This kit is a critical upgrade for engines running increased boost levels or elevated RPM limits, effectively preventing the valve float that can lead to power loss or catastrophic engine damage. Each spring is manufactured to exacting tolerances to ensure consistent valvetrain stability under extreme thermal and mechanical stress.

• Designed specifically for the BMW N54 valvetrain architecture
• Optimized spring rates for high-boost and high-RPM reliability
• Helps prevent valve float and maintains consistent seat pressure
• Precision-wound from high-quality alloy for long-term durability
• Manufacturer Part Number: KT4026