This set of eight Supertech Performance valve stem seals is designed for Toyota Yaris and Echo applications equipped with the 4AGE 20V engine. These 5mm seals are compatible with both intake and exhaust valves, providing a precision fit to prevent oil from migrating down the valve guide and into the combustion chamber.

Engineered from high-quality Viton, these seals offer significantly better thermal stability and chemical resistance than standard nitrile rubber components. Viton maintains its seal integrity and elasticity even under the extreme temperatures of high-RPM or forced-induction builds, ensuring long-term durability and consistent oil control.

• Engine Compatibility: Toyota 4AGE 20V
• Valve Stem Diameter: 5mm
• Material: High-temperature Viton synthetic rubber
• Application: Fits both Intake and Exhaust positions
• Quantity: Set of 8 seals
• Manufacturer Part Number: VS-TY5E-8

Engineered for high-performance Ford and Mazda Duratec applications, the Supertech SPRK-TS-DUR-DS single valve spring kit provides the necessary tension to maintain valvetrain stability at high RPM. By increasing seat pressure to 55 lbs at a 35.0mm install height, these springs effectively eliminate valve float, ensuring precise valve timing during aggressive camshaft operation or increased boost levels.

Each spring is manufactured from premium chrome silicon steel for exceptional fatigue resistance and long-term durability under extreme racing conditions. This kit is designed to replace factory components, offering a significant upgrade for street and track builds alike.

• Manufacturer Part Number: SPRK-TS-DUR-DS
• Fitment: Ford / Mazda Duratec Engines
• Spring Configuration: Single Valve Spring
• Seat Pressure: 55 lbs @ 35.00mm
• Material: High-Tensile Chrome Silicon Steel

Fits Toyota FRS and Subaru BRZ models equipped with the FA20D engine. This set is designed for high-performance cylinder head builds where reliability and heat dissipation are critical.

Supertech manganese bronze valve guides are precision-machined to provide superior thermal conductivity compared to factory units. By efficiently transferring heat away from the valve stem, these guides help prevent sticking and premature wear in high-load or forced induction environments. The manganese bronze alloy also offers high lubricity, reducing friction and extending the service life of both the guide and the valve stem.

• Material: High-quality Manganese Bronze alloy
• Application: Exhaust side
• Stem Diameter: 5.5mm
• Quantity: Set of 8 guides
• Precision-machined for consistent tolerances and fitment
• Manufacturer Part Number: GDE-TFRS55-E-8

Fits 2002-2007 Mini Cooper R53 (1.6L).

This set of 16 Supertech beehive valve springs is engineered to improve valvetrain stability and harmonics in the 1.6L engine. The beehive design utilizes a smaller upper diameter, which reduces the reciprocating mass of the retainer and allows the engine to rev more freely while maintaining better control over valve motion at high RPMs. These springs are an essential upgrade for performance builds where increased lift or higher engine speeds are expected.

• Manufacturer Part Number: SPR-HM1007BE-16
• Spring Type: Beehive
• Quantity: Set of 16
• Application: Mini Cooper R53 (W11 Engine)
• Compatible Engine: 1.6L

Optimized for the Nissan 240SX KA24DE engine, this set of eight Supertech exhaust valves is engineered to handle the thermal and mechanical stresses of high-performance builds. These valves feature a black nitriding treatment, a process that significantly increases surface hardness and reduces friction within the valve guides for improved longevity in high-RPM or forced-induction applications.

With a +0.5mm oversized head diameter, these valves offer increased flow potential over the factory dimensions, making them a preferred choice for builders performing a precision multi-angle valve job or seat replacement. Each valve is manufactured to exacting tolerances to ensure consistent sealing and heat dissipation.

• Manufacturer Part Number: NEVN-1010-8
• Head Diameter: +0.5mm Oversize
• Material/Finish: Black Nitrided
• Engine Compatibility: Nissan KA24DE 2.4L DOHC
• Includes: Set of 8 Exhaust Valves

Fits Nissan SR20VE engines.

Engineered for the extreme thermal demands of high-performance and forced-induction builds, this set of eight Supertech exhaust valves provides superior durability compared to standard stainless steel components. These valves are manufactured from Inconel 751, a nickel-based superalloy specifically chosen for its ability to maintain structural integrity and resist oxidation at elevated combustion temperatures where other materials may fail.

Each valve is precision-machined to ensure consistent seating and optimal exhaust flow. Whether you are building a high-revving naturally aspirated setup or a high-boost turbocharged SR20VE, these Inconel valves offer the heat resistance necessary to prevent valve fatigue and failure under intense racing conditions.

• Engine Application: Nissan SR20VE
• Material: Inconel 751 Nickel-Based Superalloy
• Quantity: Full set of 8 valves
• Manufacturer Part Number: NEVI-1004-VE-8
• Designed for high-heat racing and forced induction applications

Fits Volkswagen R32 VR6 24V engines.

This set of six Supertech intake valves is engineered for high-performance engine builds that demand superior heat resistance and valvetrain durability. Each valve features a specialized black nitriding treatment, which significantly increases surface hardness and creates a smoother finish. This treatment reduces friction within the valve guides and provides exceptional protection against wear and corrosion in the harsh environment of the combustion chamber.

• Manufacturer Part Number: VWIVN-1044SS-6
• Valve Type: Intake
• Finish: Black Nitrided for reduced friction and increased surface hardness
• Engine Compatibility: VW R32 VR6 24V
• Quantity: Set of 6 valves

Fits Volkswagen R32 and VR6 24V engines.

This set of six Supertech intake valves is engineered for high-performance Volkswagen VR6 24-valve applications. Each valve undergoes a specialized black nitriding process, which produces a hardened surface layer that significantly reduces friction and increases wear resistance within the valve guide. Designed to withstand the thermal loads of modified engines, these valves provide a reliable seal and improved durability over standard components.

• Material: Black nitrided steel for reduced friction and high hardness
• Component Type: Intake Valve
• Engine Fitment: VW R32 / VR6 24V
• Quantity: Set of 6
• Manufacturer Part Number: VWIVN-1044SL-6

Engineered for high-performance Volkswagen 2.0L 16V builds, these Supertech intake valves (MPN: VWIVN-1034-10) provide the durability and surface hardness required for demanding applications. Each valve undergoes a black nitriding process, creating a smooth, low-friction finish that significantly improves wear resistance in the valve guides compared to untreated stainless steel.

The dish-style head design is precision-machined to optimize combustion chamber volume and flow characteristics. These valves are a direct-fit performance upgrade, designed to withstand increased thermal loads and high-RPM stress.

• Fits VW 2.0L 16V engines (2.0L)
• Head Diameter: 32mm
• Stem Diameter: 6.95mm
• Total Length: 95.5mm
• Valve Head Style: Dish
• Finish: Black Nitrided
• Quantity: Set of 10
• Manufacturer Part Number: VWIVN-1034-10

Fits select Volkswagen VR6 models (2.8L).

Engineered for high-performance builds and demanding thermal environments, this set of six Supertech intake valves provides the durability needed for modified VR6 engines. Each valve undergoes a specialized black nitriding process, which hardens the surface and significantly reduces friction against the valve guide for improved longevity and smoother operation at high RPMs.

• Material: Black nitrided steel for superior hardness and heat resistance
• Engine Fitment: Volkswagen VR6 2.8L
• Component Type: Intake Valve
• Quantity: Set of 6
• Manufacturer Part Number: VWIVN-1007-6

Whether refreshing a high-mileage cylinder head or building a forced-induction setup, these Supertech valves offer the precise tolerances and material science required to maintain consistent compression and airflow.

Designed for high-output Audi and VW 2.0T FSI 16V engines, this set of Supertech intake valves is engineered to handle increased thermal loads and mechanical stress. These valves feature a +1mm oversize head diameter, which significantly increases flow potential in ported heads or competition-grade builds. Note that installing oversize valves requires professional cylinder head machining to ensure proper seat contact.

Every valve is manufactured from premium stainless steel and finished with a proprietary black nitriding process. This treatment creates a hardened surface that reduces friction within the valve guides and provides superior resistance to wear and heat compared to standard chrome plating. These are essential for engine builders looking to improve valvetrain reliability in turbocharged applications.

• Manufacturer Part Number: VWIVN-1004S-8
• Engine Compatibility: 2.0T FSI 16V
• Valve Type: Intake
• Sizing: +1mm Oversize
• Material: Black Nitrided Stainless Steel
• Quantity: Set of 8

Fits Audi and VW vehicles equipped with the 2.5T FSI engine.

Designed for high-performance builds and factory refreshes alike, these Supertech Black Nitrided intake valves provide superior durability over standard OEM components. The nitriding process involves a hardening treatment that significantly increases surface hardness and reduces friction, resulting in improved heat resistance and extended valve guide life in high-heat turbocharged applications.

These valves are machined to standard 33.85mm head diameter specifications, making them a direct-fit replacement for worn factory intake valves without requiring oversized seat machining. This complete set includes all 10 intake valves required for the 2.5T FSI cylinder head.

• Manufacturer Part Number: VWIVN-1002T-10
• Valve Type: Intake
• Material: Black Nitrided Steel
• Head Diameter: 33.85mm (Standard)
• Quantity: Set of 10

Fits select Audi and Volkswagen models equipped with the 2.0T FSI 16V engine.

Improve cylinder head reliability and performance with this set of eight Supertech Black Nitrided intake valves. These valves are engineered specifically for high-stress environments, such as turbocharged or high-RPM applications where thermal management and friction reduction are critical. The specialized nitriding process creates a high-hardness surface that is smoother than traditional chrome plating, resulting in less wear on the valve guides and improved airflow dynamics.

• Precision-machined from high-grade stainless steel for superior thermal stability
• Black Nitrided surface treatment increases hardness and reduces stem-to-guide friction
• Designed for direct compatibility with 2.0T FSI 16-valve cylinder heads
• Enhanced resistance to heat-related fatigue and corrosion
• Manufacturer Part Number: VWIVN-1002S-8

Includes: (8) Black Nitrided Intake Valves.

Fits select Audi and VW 2.0T FSI 16V engines.

Engineered for high-stress performance applications, these Supertech intake valves provide the durability required for modified 2.0T FSI builds. Each valve undergoes a specialized black nitriding process, which creates a smooth, hardened surface. This treatment significantly reduces friction within the valve guide and enhances resistance to wear and thermal fatigue compared to standard untreated valves.

Designed to maintain precise tolerances under high RPM and increased boost pressures, these valves are a critical upgrade for enthusiasts looking to improve valvetrain reliability. This set of 10 allows for a complete intake-side refresh or replacement during a cylinder head rebuild.

• Manufacturer Part Number: VWIVN-1002S-10
• Valve Type: Intake
• Surface Treatment: Black Nitrided
• Engine Fitment: 2.0T FSI 16V
• Quantity: Set of 10

Designed for the high-thermal environment of the VW VR6 cylinder head, this set of six Supertech Black Nitrided Exhaust Valves provides the durability required for performance street and track builds. These valves are engineered to replace worn OE components, offering improved surface hardness and smoother operation within the valve guides.

Supertech's black nitriding process infuses the valve surface to create a friction-reducing layer that resists wear and fatigue. This treatment is particularly beneficial for high-RPM or forced induction applications where heat management and valve-train reliability are critical. Each valve is precision-manufactured to ensure a perfect seat and consistent airflow characteristics.

• Fits VW VR6 (2.8L) engines.
• Manufacturer Part Number: VWEVN-1007-6
• Includes: Set of 6 exhaust valves
• Finish: Black Nitrided for reduced friction and increased surface hardness
• Material: High-strength alloy construction optimized for exhaust temperatures

Fits select Volkswagen R32 VR6 24V models.

This set of Supertech Inconel exhaust valves is engineered specifically for the high-performance demands of the VW 3.2L 24-valve VR6 engine. Unlike standard stainless steel, Inconel is a nickel-base superalloy designed to withstand extreme heat and oxidation. This makes these valves an essential upgrade for high-output naturally aspirated builds and forced induction setups where exhaust gas temperatures (EGTs) are significantly elevated.

• Material: High-temperature resistant Inconel alloy
• Application: Dedicated fitment for VW R32 VR6 24V cylinder heads
• Configuration: Set of 6 exhaust valves
• Manufacturer Part Number: VWEVI-1044SS-6

Supertech valves are manufactured to exacting tolerances, providing the reliability needed for competitive racing and high-stress street use. These valves ensure a consistent seal and superior durability compared to OE components when pushed to the limit.

Fits Volkswagen R32 VR6 24-valve engines.

Built to withstand the extreme thermal stresses of high-output engines, this set of six Supertech Inconel exhaust valves (VWEVI-1044SL-6) is a critical upgrade for your 24V VR6 cylinder head. While standard stainless steel valves are sufficient for many applications, Inconel—a nickel-based superalloy—is specifically engineered for superior heat resistance and structural integrity at extreme temperatures. This makes them the ideal choice for turbocharged, supercharged, or high-compression naturally aspirated builds where exhaust gas temperatures (EGTs) consistently reach critical levels.

• Material: Inconel superalloy for maximum high-heat durability.
• Application: Exhaust side only.
• Engine Compatibility: Volkswagen R32 VR6 24V.
• Quantity: Set of 6 valves.
• Manufacturer Part Number: VWEVI-1044SL-6

Fits VW 1.8L and 2.0L 16V engines.

Engineered for high-performance and competition use, this set of 10 Supertech exhaust valves is manufactured from Inconel, a nickel-chromium-based superalloy. This material is specifically chosen for its ability to maintain structural integrity and resist oxidation in the extreme heat environments typical of turbocharged or high-compression naturally aspirated builds. These valves feature a flat head design, providing specific combustion chamber volume and flow characteristics required for precision engine tuning.

• Manufacturer Part Number: VWEVI-1034F-10
• Valve Type: Exhaust
• Material: Inconel
• Head Diameter: 28.00mm
• Stem Diameter: 6.96mm
• Length: 98.20mm
• Head Style: Flat
• Quantity: Set of 10

Fits Audi and VW 2.0T FSI 16V engines (2.0T).

Engineered for high-performance and forced induction applications, these Supertech Inconel exhaust valves provide the superior heat resistance necessary for modified turbocharged builds. Inconel is a specialized nickel-base superalloy that maintains its structural integrity and resists oxidation at extreme exhaust gas temperatures (EGTs) that would typically fatigue standard stainless steel valves. The +1mm oversized head diameter allows for increased exhaust flow, though it requires professional cylinder head machining and oversized valve seats for proper installation.

• Material: Inconel (High-temp nickel-base superalloy)
• Head Diameter: +1mm Oversize
• Valve Type: Exhaust
• Quantity: Set of 8 valves
• Application: Audi/VW 2.0T FSI 16V
• Manufacturer Part Number: VWEVI-1004S-8

Fits Audi and VW models equipped with the EA113 engine platform. These Supertech Inconel exhaust valves are engineered to withstand the extreme thermal loads common in high-performance and forced induction applications. Unlike standard stainless steel, the Inconel alloy maintains superior structural integrity and oxidation resistance at the elevated temperatures seen in turbocharged exhaust ports.

Precision-machined as a direct replacement for factory components, these valves feature a triple-groove keeper design to ensure secure valve retention during high-RPM operation. These are standard (Std) head-diameter valves, making them an ideal choice for refreshing or upgrading a cylinder head while maintaining factory seat geometry.

• Manufacturer Part Number: VWEVI-1002T-8
• Material: High-temperature Inconel alloy
• Valve Head Diameter: Standard (Std)
• Stem Groove Type: Triple Groove
• Application: Exhaust side
• Quantity: Complete set of 8 valves

Designed for high-performance Audi/VW 2.5T FSI engines, this set of Supertech exhaust valves provides the thermal stability required for forced induction and high-output builds. These valves are manufactured from Inconel, a nickel-base superalloy engineered to maintain structural integrity and resist oxidation under the extreme exhaust gas temperatures common in turbocharged 5-cylinder applications.

These valves are an essential upgrade when rebuilding a cylinder head for increased boost or sustained high-RPM use, replacing standard valves that may be prone to fatigue under heat stress. Each valve features a 28.00mm standard head diameter for a direct fit in factory seats.

• Manufacturer Part Number: VWEVI-1002T-10
• Engine Fitment: 2.5T FSI
• Material: High-Heat Inconel Alloy
• Head Diameter: 28.00mm (Standard)
• Quantity: Set of 10 Exhaust Valves

Fits select Audi and VW models equipped with the 2.0T FSI 16V engine.

Supertech Performance Inconel exhaust valves are engineered specifically for high-stress environments, such as turbocharged or high-output builds where exhaust gas temperatures (EGTs) reach extreme levels. Manufactured from a specialized nickel-based superalloy, Inconel provides superior heat resistance and structural integrity compared to standard stainless steel, preventing valve fatigue and failure under thermal load.

• Material: High-temperature Inconel alloy
• Engine Compatibility: 2.0T FSI 16V
• Valve Type: Exhaust
• Quantity: Set of 8
• Manufacturer Part Number: VWEVI-1002S-8

This set of 10 Supertech Inconel exhaust valves is engineered for Audi and Volkswagen 2.0T FSI 16V engines. Built to withstand the extreme thermal loads found in high-performance turbocharged applications, these valves provide superior durability where standard stainless steel components often fail.

Constructed from Inconel, a nickel-chromium-based superalloy, these valves maintain high tensile strength and oxidation resistance at elevated exhaust gas temperatures (EGTs). They are a direct replacement for factory exhaust valves, designed to work within the specific geometry of the FSI cylinder head to ensure consistent sealing and heat dissipation.

• Engine Compatibility: Audi/VW 2.0T FSI 16V
• Material: Inconel superalloy for maximum heat resistance
• Quantity: Set of 10 valves
• Manufacturer Part Number: VWEVI-1002S-10

Maintain precise oil control and protect your combustion chamber with this set of 8 Supertech integral valve stem seals. Specifically designed for the Mini Prince R56 engine with 6mm valve stems, these seals are manufactured from high-grade Viton. This fluoroelastomer material provides significantly better heat resistance and durability than standard rubber, ensuring they remain pliable and effective even under the extreme thermal loads of a performance engine.

These integral-style seals seat securely on the valve guide to prevent oil from migrating down the stem, reducing blue smoke, oil consumption, and carbon buildup on the valves. Whether you are performing a top-end refresh or a full performance build, these seals provide the tight tolerances required for long-term reliability.

• Material: High-temperature Viton
• Valve Stem Diameter: 6mm
• Seal Type: Integral
• Quantity: Set of 8
• Manufacturer Part Number: VSI-MIN-R56-8

This set of Supertech 6mm Viton integral valve stem seals provides superior oil control and high-temperature resistance for your engine's valvetrain. Designed for 6mm valve stems, these seals are compatible with select Mini, Dodge Neon, and Mitsubishi 420A engines.

Viton is a premium fluoroelastomer material that offers significantly better heat resistance and longevity compared to standard rubber seals, making them an ideal choice for high-performance builds or standard cylinder head refreshes. The integral design ensures a secure fit on the valve guide to prevent oil consumption and smoking.

• Manufacturer Part Number: VSI-M6E-8
• Stem Diameter: 6mm
• Material: Viton (Fluoroelastomer)
• Style: Integral
• Quantity: Set of 8

Fits Mitsubishi Lancer Evolution X models equipped with the 4B11 engine.

Maintain precise oil control in your cylinder head with this set of 16 Supertech integral valve stem seals. These seals are engineered to withstand the high thermal loads and increased cylinder pressures common in turbocharged 4B11 applications. By providing a consistent seal against the valve stem, they prevent oil from migrating down the guide into the combustion chamber—eliminating the blue smoke and carbon buildup associated with worn factory seals.

Designed for both street and track use, these Supertech seals are manufactured to strict tolerances for long-term durability. This complete set provides all 16 seals required for a full intake and exhaust service on the 4B11 engine.

• Manufacturer Part Number: VSI-M5.5V-16
• Fitment: Mitsubishi Evolution X (4B11 Engine)
• Seal Type: Integral Valve Stem Seal
• Quantity: Set of 16

Ensure superior oil control and long-term durability in your cylinder head with this set of 8 Supertech Viton integral intake valve stem seals, specifically engineered for Ford EcoBoost (2.0L / 2.3L) engines. Manufactured from high-grade Viton, these seals provide exceptional resistance to the high operating temperatures and chemical degradation found in turbocharged, direct-injection applications.

The integral design combines the valve seal and spring seat into a single component. This construction provides a stable mounting base for the valve springs while preventing the seal from migrating or loosening during high-RPM operation. Whether you are performing a standard refresh or a high-performance build, these seals offer the precision and heat tolerance required to maintain intake port cleanliness and consistent engine performance.

• Fits Ford EcoBoost (2.0L / 2.3L) engines
• Material: High-grade Viton fluoroelastomer
• Configuration: Integral (Seal and spring seat combination)
• Application: Intake valves only
• Quantity: Set of 8
• Manufacturer Part Number: VSI-FECO20-I-8

Fits Ford EcoBoost 2.0L and 2.3L engines.

These Supertech integral exhaust valve stem seals are engineered to withstand the extreme temperatures found on the exhaust side of the Ford EcoBoost cylinder head. Manufactured from high-grade Viton rubber, these seals provide superior heat resistance and durability compared to standard OEM components. This is a critical upgrade for high-performance builds or turbocharged applications where exhaust gas temperatures are significantly elevated. The integral design ensures a secure seat on the guide for precise oil metering, preventing oil consumption and guide wear.

• Manufacturer Part Number: VSI-FECO20-E-8
• Material: High-temperature Viton
• Fitment: Exhaust side only
• Engine Compatibility: Ford EcoBoost 2.0L and 2.3L
• Quantity: Set of 8

Fits Ford Duratec engines equipped with 5.5mm diameter valve stems.

These Supertech integral valve stem seals are a high-performance upgrade designed to replace worn OE seals and ensure precise oil control in the valvetrain. Manufactured from premium Viton, these seals offer significantly higher heat resistance and chemical stability than standard rubber, making them essential for high-RPM and high-temperature engine builds.

The integral design incorporates the valve spring seat directly into the seal body, providing a stable foundation for the valve spring and simplifying the installation process. By maintaining a tight seal on the valve stem, these components prevent oil consumption and carbon buildup on the valves, protecting your engine's efficiency and power output.

• Manufacturer Part Number: VSI-D5.5E-8
• Material: High-grade Viton for superior thermal durability
• Valve Stem Diameter: 5.5mm
• Configuration: Integral seal with built-in spring seat
• Quantity: Complete set of 8

Fits Ford Duratec (2.5L) engines.

Maintain critical oil control and prevent smoke during startup and deceleration with this Supertech Viton Valve Stem Seal Set. These seals are engineered for the Ford Duratec 2.5L platform, providing a precise fit for 5.5mm valve stems. Whether you are performing a standard cylinder head refresh or a high-performance build, these seals offer superior heat resistance compared to standard rubber alternatives.

• Material: High-grade Viton for maximum resistance to heat and chemical degradation
• Valve Stem Diameter: 5.5mm
• Quantity: Complete set of 16 seals for full cylinder head coverage
• Application: Direct replacement for worn or hardened OE valve stem seals
• Manufacturer Part Number: VSI-D5.5E-16