These GSC P-D valve guides are engineered to restore and maintain precise valve stem-to-guide clearances in high-performance BMW cylinder heads. Replacing worn factory guides is critical for preventing valve float, ensuring consistent seating, and maintaining efficient heat transfer from the valve stem to the cylinder head casting.

Designed for use in both intake and exhaust positions, these guides are machined to exacting tolerances to withstand the extreme thermal loads found in the N63 and S63 twin-turbocharged platforms. Whether you are performing a routine top-end refresh or a full performance build, these guides provide the stability required for reliable valvetrain operation.

• Fits BMW N63 and S63 engine platforms
• Compatible with both intake and exhaust valve positions
• Precision-machined for consistent inner and outer diameter tolerances
• Quantity: Set of 8 valve guides
• Manufacturer: GSC P-D

Designed for Nissan VQ35 engines, these Supertech Manganese Bronze valve guides provide superior heat transfer and lower friction compared to standard OEM components. Manganese bronze is the preferred material for high-performance and high-RPM cylinder head builds because of its natural lubricity and ability to withstand the extreme thermal stresses of forced induction or racing applications.

Each guide is precision-machined to exact tolerances, ensuring a consistent press-fit into the cylinder head while maintaining perfect valve stem alignment. This improves valve seal longevity and ensures stable valvetrain geometry throughout the RPM range. This set of 12 is compatible with intake or exhaust positions as specified for VQ35 platforms.

• Brand: Supertech Performance
• Material: Manganese Bronze
• Outer Diameter (OD): 10.079mm
• Inner Diameter (ID): 5.985mm
• Length: 42.00mm
• Quantity: Set of 12

Fits 2003-2007 Dodge Viper models.

Engineered for high-performance applications, these GSC Power-Division valve guides are designed to replace worn OE components while providing superior thermal conductivity and wear resistance. Precise valve stem alignment is critical for maintaining valve seat integrity and ensuring the longevity of the Viper’s V10 cylinder heads. These guides are machined to exact tolerances, making them an essential upgrade for both standard refreshes and high-stress racing builds.

• Manufacturer Part Number: 3109-10
• Total Length (TL): 2.615 in
• Outer Diameter (OD): 0.5145 in
• Inner Diameter (ID): 0.311 in
• Application: Intake or Exhaust
• Quantity: Set of 10

Fits 1992-2000 Honda Civic and Civic del Sol equipped with D16Y8 or D16Z6 VTEC engines.

Maintain precise valve stem alignment and improve heat transfer with these Brian Crower exhaust valve guides. Engineered specifically for the Honda D-series VTEC cylinder head, these guides are a necessary upgrade during any high-performance head build or refresh. They provide a stable, low-friction surface for the exhaust valves, ensuring consistent seating and protecting against the premature wear often found in high-RPM or forced induction applications.

Precision-machined to exacting tolerances, these guides serve as a direct replacement for worn OE components, restoring factory-level seal and stem stability. This set of eight provides complete coverage for the exhaust side of your D16 cylinder head.

• Precision machined 5.5mm internal diameter for optimal stem clearance
• Designed for superior thermal conductivity and wear resistance in high-heat exhaust ports
• Direct fit for Honda D16Y8 and D16Z6 VTEC cylinder heads
• Compatible with aftermarket and OEM valve seals
• Manufacturer Part Number: BC3909
• Quantity: Set of 8 guides

Upgrade your cylinder head with this set of 12 Supertech manganese bronze exhaust valve guides, specifically engineered for BMW N55 and S55 engines. These guides are designed for 6mm valve stems and serve as a high-performance replacement for worn factory components during a head rebuild.

Supertech utilizes a proprietary manganese bronze alloy that provides significantly better heat transfer and lower friction than standard OEM guide materials. This improved thermal conductivity helps pull heat away from the exhaust valves more efficiently, while the precision-machined tolerances ensure stable valve seating and long-term durability in high-RPM or forced-induction applications.

• Material: Manganese Bronze alloy
• Stem Diameter: 6mm
• Application: Exhaust side
• Quantity: Set of 12 guides
• Manufacturer Part Number: GDE-BMW-N55-E-12

Fits 2011-2017 Ford Mustang and F-150 models equipped with 5.0L Coyote Gen 1 and Gen 2 engines.

This GSC Power-Division valve guide set is engineered for high-performance Ford 5.0L Coyote Gen 1 and Gen 2 cylinder heads. These standard (STD) bore guides serve as precision replacements for both intake and exhaust positions, maintaining tight tolerances for valve stem stability and optimal heat dissipation. Each guide features an integrated stopper flange, which acts as a positive mechanical stop during the press-in process to ensure perfectly consistent installation depth across all 16 ports.

• Designed specifically for Ford 5.0L Coyote Gen 1 and Gen 2 platforms
• Standard (STD) outer diameter for factory-spec fitment
• Integrated stopper ensures precise, repeatable installation height
• Universal design for both intake and exhaust valve positions
• Manufacturer Part Number: 3130-16
• Sold as a complete set of 16

Fits 1988-1995 Toyota Celica All Trac and MR2 Turbo with the 3SGTE engine.

GSC Power-Division manganese bronze exhaust valve guides are engineered to replace worn or underperforming OE components in high-stress turbocharged applications. Manganese bronze is selected for its superior thermal conductivity compared to standard cast iron, allowing for more efficient heat transfer away from the valve stem. This material also provides excellent natural lubricity, reducing friction and extending the service life of both the valve and the guide.

CNC machined to precise tolerances, these guides ensure consistent valve stem-to-guide clearance, which is critical for maintaining proper valve seat alignment and sealing in high-performance 3SGTE builds. This set is specifically designed for the exhaust side where heat management is most critical.

• Material: High-quality Manganese Bronze for enhanced durability and heat dissipation
• CNC machined for exact fitment and finish
• Designed for high-boost and high-temperature exhaust environments
• Complete set of 8 exhaust valve guides
• Manufacturer Part Number: 3033-8

Improve cylinder head reliability and thermal efficiency with this set of eight GSC Power-Division Manganese Bronze valve guides. Specifically engineered for Subaru SOHC EJ25 engines, these guides are an essential upgrade for high-performance builds or any refresh where precision tolerances and long-term durability are required.

Constructed from a high-strength manganese bronze alloy, these guides offer superior thermal conductivity compared to factory cast iron units, effectively drawing heat away from the valve stems. The material's natural lubricity reduces friction, minimizing wear on both the guide bore and the valve stem. These guides feature a "stopper style" (shouldered) design, providing a physical stop that prevents the guide from migrating or dropping into the port during extreme thermal cycles or high-RPM use.

• Fits Subaru SOHC EJ25 engines
• Application: Intake and Exhaust valve positions
• Material: Precision-machined Manganese Bronze
• Design: Stopper style with integrated shoulder
• Quantity: Set of 8 guides
• Manufacturer Part Number: 3019-8

Fits select 2013-2021 Subaru BRZ, Scion FR-S, and Toyota 86 models equipped with the FA20 engine.

GSC Power Division stopper-style intake valve guides are engineered to replace worn factory components in high-performance FA20 cylinder heads. Machined from high-grade proprietary manganese bronze, these guides offer superior heat dissipation and wear resistance compared to standard OEM materials. The integrated stopper shoulder ensures precise installation depth every time, preventing the guide from migrating during high-RPM operation or extreme thermal cycles.

These guides are finished to standard (STD) bore specifications, providing the necessary stability for the valve stem to maintain a consistent seal and seat geometry. Ideal for both street performance and dedicated track builds, these components are a critical upgrade during any cylinder head refresh.

• Part Number: 3106-8
• Location: Intake side
• Sizing: Standard (STD) outer diameter
• Material: High-strength manganese bronze
• Quantity: Complete set of 8 guides

These GSC Power-Division manganese bronze exhaust valve guides are engineered for high-performance Nissan VK56 engine builds. Replacing factory cast iron guides with manganese bronze provides significantly better heat dissipation and superior lubricity, reducing the risk of valve sticking or premature wear under high-RPM or high-temperature conditions.

• Material: High-quality Manganese Bronze for improved thermal conductivity and wear resistance.
• Application: Precision machined specifically for Nissan VK56 engine exhaust ports.
• Installation: Designed to replace worn OE guides; professional machining and sizing required during installation.
• Quantity: Complete set of 24 exhaust valve guides.
• Manufacturer Part Number: 3047-16

This set of eight GSC Power-Division exhaust valve guides is engineered specifically for the Mitsubishi 4B11T engine. Designed to withstand the high thermal loads of turbocharged performance applications, these guides provide the precision fitment necessary for stable valve stem alignment and efficient heat transfer from the valve to the cylinder head.

Whether you are performing a standard cylinder head refresh or building a high-horsepower Lancer Evolution X, these guides offer superior wear resistance compared to standard OE components. They ensure consistent valve operation under high-RPM and high-boost conditions, helping to prevent valve guide galling and maintaining tight tolerances over the life of the engine.

• Designed specifically for the Mitsubishi 4B11T engine platform
• High-grade material construction for improved durability and heat dissipation
• Precision machined to maintain tight valve-to-guide clearances
• Direct replacement for factory exhaust valve guides
• Includes a complete set of 8 exhaust guides
• Manufacturer Part Number: 3013-8

Fits select 2006-2015 Mitsubishi Lancer Evolution and Ralliart models with the 4B11T engine.

GSC Power-Division manganese bronze valve guides are designed as a high-performance replacement for factory intake guides. Manufactured from a proprietary manganese bronze alloy, these guides offer significantly better heat dissipation and lower friction than standard OEM cast iron components. This material is specifically chosen for its ability to maintain tight tolerances and resist wear under the extreme thermal loads found in high-boost 4B11T applications.

These precision-machined guides ensure consistent valve stem alignment and are compatible with both stainless steel and titanium valves, making them an essential component for any comprehensive cylinder head refresh or performance build.

• Part Type: Intake Valve Guides
• Material: High-strength Manganese Bronze
• Engine: 4B11T
• Quantity: Set of 8
• Manufacturer Part Number: 3012-8

Fits select 2006-2015 Mitsubishi Lancer Evolution and Ralliart models (4B11T).

GSC Power-Division Manganese Bronze Exhaust Valve Guides are engineered to provide superior heat dissipation and wear resistance for high-performance 4B11T cylinder heads. Manganese bronze is the preferred material for exhaust side applications due to its high thermal conductivity, which efficiently pulls heat away from the valve stem, and its natural lubricity, which prevents galling even under extreme turbocharged operating temperatures.

These precision-machined guides are a direct replacement for worn factory components, ensuring stable valve travel and consistent seal geometry. Whether you are performing a standard valvetrain refresh or building a high-boost competition engine, these guides offer the durability required to maintain tight tolerances over the life of the engine.

• Manufactured from high-strength manganese bronze for maximum thermal efficiency
• Specifically designed for the exhaust side of 4B11T cylinder heads
• Superior wear resistance compared to OEM cast iron guides
• Natural lubricity reduces friction and prevents valve stem seizing
• Set of 8 exhaust guides
• Manufacturer Part Number: 3011-8

Fits 1986-1992 Toyota Supra Base and Turbo models.

Restore cylinder head precision and valve stability with Brian Crower BC3933 exhaust valve guides. These guides are engineered to replace worn factory components, ensuring the tight tolerances required for proper valve seating and oil control. Whether you are performing a standard refresh or a high-performance build on a Toyota 7M-GE or 7M-GTE engine, these 6.0mm guides provide the durability and fitment needed for long-term reliability.

• Precision machined for 6.0mm exhaust valve stems
• Essential for maintaining valve-to-guide clearance and preventing stem wobble
• Designed specifically for the Toyota 7M engine platform
• Set of 12 provides full coverage for the exhaust side
• Manufacturer Part Number: BC3933

Fits 1986-1992 Toyota Supra Base and Turbo models.

Brian Crower BC3932 intake valve guides are engineered to provide precise valve stem-to-guide clearances for the Toyota 7M-series cylinder head. These 6.0mm intake guides are essential for any high-performance rebuild, replacing worn factory components to ensure stable valve motion and proper heat dissipation. Each guide is precision-machined to meet or exceed OEM specifications for fitment and durability.

• Part Type: Intake Valve Guides
• Engine Compatibility: Toyota 7M-GTE / 7M-GE
• Bore Size: 6.0mm
• Quantity: Set of 12
• Manufacturer Part Number: BC3932

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 Toyota 4AGE engines.

Engineered for high-performance cylinder head builds, this set of eight Supertech manganese bronze valve guides (MPN GDE-T4AG-SM-8) provides superior heat dissipation and lubricity compared to standard OE components. The manganese bronze alloy is specifically chosen for its ability to withstand high thermal loads while maintaining tight tolerances, ensuring your 6mm valve stems remain stable and properly aligned during high-RPM operation.

• Precision machined from high-quality manganese bronze for reduced friction and improved heat transfer
• Designed for 6mm valve stems in both intake and exhaust positions
• Optimized for use with Supertech VS-T6SM viton valve seals
• Helps prevent premature valve guide wear in forced induction or high-performance naturally aspirated applications
• Complete set of 8 guides included
• Manufacturer Part Number: GDE-T4AG-SM-8

Improve cylinder head reliability and thermal management in your Toyota Supra 2JZ with this set of Supertech Manganese Bronze Intake Valve Guides. Designed specifically for the intake side of the 2JZ platform, these guides are compatible with 6mm valve stems and serve as a precision-machined upgrade for factory components during a performance rebuild.

Manganese bronze is a preferred material for high-performance valve train components due to its superior thermal conductivity and natural lubricity. These guides effectively transfer heat away from the valve stem and into the cylinder head while minimizing friction, extending the life of your valves and maintaining tighter tolerances under high-stress conditions.

• Material: Precision-machined Manganese Bronze
• Application: Intake ports only
• Valve Stem Diameter: 6mm
• Quantity: Set of 12 guides
• Manufacturer Part Number: GDE-T2JZ-I-12

Supertech manganese bronze valve guides are engineered for high-performance Toyota 2JZ cylinder heads. Manganese bronze is a superior material choice over standard OE guides, offering significantly better thermal conductivity and natural lubricity to reduce friction and heat buildup during high-RPM or high-boost operation.

These exhaust guides feature a precision-machined 11.03mm outer diameter to ensure a stable, secure press-fit into the cylinder head. Designed to accommodate a 6mm valve stem, they are a critical component for any 2JZ valvetrain rebuild where durability and heat dissipation are priorities.

• Manufacturer Part Number: GDE-T2JZ-E-12
• Material: High-strength Manganese Bronze
• Exhaust Stem Diameter: 6.00mm
• Outer Diameter: 11.03mm
• Quantity: Set of 12 guides

Ensure precise valve alignment and improved heat dissipation in your Toyota 20V (4A-GE) cylinder head with this set of Supertech manganese bronze intake valve guides. Specifically engineered for high-performance and racing applications, these guides are machined from a high-quality manganese bronze alloy that offers superior thermal conductivity compared to standard cast iron components.

These guides are designed for 5mm valve stems and are fully compatible with both stainless steel and titanium valves. The material's low-friction properties help reduce wear on the valve stems, making them a critical upgrade for high-RPM builds where reliability and tight tolerances are paramount.

• Precision machined from manganese bronze for optimal lubrication and wear resistance
• High thermal conductivity for efficient heat transfer from the valve to the cylinder head
• Designed for Toyota 20-Valve (4A-GE) engine configurations
• Compatible with 5mm diameter valve stems
• Quantity: Set of 12 intake guides
• Manufacturer Part Number: GDE-T20V-I-12

Fits Toyota 20V (4AGE) engines.

Supertech manganese bronze valve guides are precision-machined to provide superior thermal conductivity and lubricity compared to standard OEM components. Designed specifically for the high-heat environment of the exhaust side, these guides effectively pull heat away from the valve stem to ensure consistent performance and extended service life in high-RPM or forced induction applications.

The manganese bronze alloy offers a lower coefficient of friction, reducing wear on the valve stems while maintaining tight tolerances. These are a direct replacement for worn factory guides and are essential for any high-performance cylinder head rebuild.

• Manufacturer Part Number: GDE-T20V-E-8
• Material: High-Quality Manganese Bronze
• Stem Diameter: 5mm
• Application: Exhaust side
• Engine Compatibility: Toyota 20V (4AGE Silvertop/Blacktop)
• Quantity: Set of 8

Fits Subaru EJ20 and EJ25 engines.

These Supertech Performance intake valve guides are precision-machined from high-quality manganese bronze, a material chosen specifically for its superior thermal conductivity and wear resistance. In high-performance and turbocharged EJ-series builds, managing heat at the valve stem is critical; these guides facilitate faster heat transfer from the valve to the cylinder head compared to standard OEM components.

Designed for 6mm valve stems, these guides maintain tight tolerances to ensure proper valve seating and stability at high RPMs. Manganese bronze also provides excellent lubricity, reducing the risk of valve sticking or galling under extreme thermal loads.

• Precision-machined from manganese bronze for enhanced durability and heat dissipation
• Specifically sized for 6mm intake valve stems
• Compatible with Subaru EJ20 and EJ25 engine platforms
• Set of 8 intake guides included
• Manufacturer Part Number: GDE-SUEJ6-I-8

Maintain precise valve stem alignment and improve heat dissipation in your Subaru EJ20 or EJ25 engine with this set of Supertech manganese bronze exhaust valve guides. These guides are engineered to replace worn factory units, providing superior lubricity and wear resistance compared to standard cast iron guides, making them ideal for high-performance and turbocharged applications.

• Precision machined from high-quality manganese bronze for reduced friction and improved thermal conductivity.
• Designed specifically for exhaust side applications in Subaru EJ-series cylinder heads.
• Specifications: 6mm Stem Diameter and 11.08mm Outer Diameter.
• Direct replacement for OE guides to ensure stable valve motion at high RPM.
• Quantity: Set of 8 exhaust guides.
• Manufacturer Part Number: GDE-SUEJ6-E-8.

Designed for the Nissan SR20DET engine, this set of eight Supertech exhaust valve guides is precision-machined to restore valvetrain geometry and improve thermal conductivity. These guides are essential for high-performance cylinder head builds where maintaining exact valve stem alignment is critical for valve seal longevity and consistent combustion sealing.

• Engine Fitment: Nissan SR20DET
• Stem Diameter: 7mm
• Location: Exhaust
• Quantity: Set of 8
• MPN: GDE-NSR7-ET-8

Each guide is manufactured to exacting tolerances to ensure a proper press-fit into the factory cylinder head, providing a durable, low-friction bearing surface capable of withstanding the extreme heat and stress of turbocharged applications.

This set of 12 Supertech exhaust valve guides is engineered for Nissan SR20DET and RB26 engines. Designed to meet the rigorous demands of high-performance and turbocharged builds, these guides provide superior thermal conductivity and wear resistance compared to standard factory components.

Replacing worn factory guides with Supertech precision-machined units ensures consistent valve stem alignment, improving valve seal longevity and overall cylinder head efficiency. These guides are specifically sized for 7mm valve stems on the exhaust side of the cylinder head.

• Engine Fitment: Nissan SR20DET, RB26
• Stem Diameter: 7mm
• Application: Exhaust Side
• Quantity: Set of 12
• Manufacturer Part Number: GDE-NSR7-ET-12

Upgrade your cylinder head with this set of 8 Supertech intake valve guides, precision-engineered for the Nissan SR20DET engine. These guides are machined from a high-quality manganese bronze alloy, a material specifically selected for its exceptional thermal conductivity and superior wear resistance in high-performance environments.

Designed to accommodate 6mm valve stems, these manganese bronze guides offer significantly lower friction than standard OEM cast iron units, making them an essential upgrade for high-RPM or forced induction builds. They provide a stable, durable interface when used with aftermarket stainless steel or titanium valves, ensuring consistent valve alignment and improved heat transfer away from the valve stem to prevent premature wear.

• Material: High-strength manganese bronze alloy
• Fitment: Nissan SR20DET engines
• Stem Diameter: 6mm
• Application: Intake side
• Quantity: Set of 8 guides
• Manufacturer Part Number: GDE-NSR6-I-8

Designed for high-performance Nissan SR20DET and RB26 engines, these Supertech intake valve guides replace worn factory components to restore precise valve stem-to-guide clearance. Machined from a high-quality manganese bronze alloy, these guides offer significantly better heat transfer and lubricity than standard cast iron, making them essential for turbocharged applications where thermal management is critical.

These guides are precision-engineered for a 6mm valve stem, ensuring tight tolerances for improved valve stability and consistent seating. By reducing friction and dissipating heat more efficiently, they help prevent valve seizing and extend the service life of both the valves and the cylinder head.

• Manufacturer Part Number: GDE-NSR6-I-12
• Material: Manganese Bronze Alloy
• Type: Intake Valve Guide
• Stem Diameter: 6mm
• Quantity: Set of 12
• Application: Nissan SR20DET and RB26DETT engines

Precision-engineered for high-performance applications, this set of eight Supertech Manganese Bronze exhaust valve guides is designed specifically for the Nissan SR20DE engine. These guides are a critical upgrade for builds requiring tighter tolerances and superior heat dissipation compared to standard cast iron components.

Manganese bronze is the material of choice for professional engine builders due to its high thermal conductivity and excellent lubricity. This combination reduces friction on the valve stem and efficiently transfers heat away from the exhaust valves, significantly extending component life in high-RPM or forced induction environments. Each guide is machined to exacting specifications to ensure a proper interference fit in the cylinder head and consistent valve-to-guide clearances.

• Material: High-quality Manganese Bronze for improved wear resistance
• Application: Nissan SR20DE engines
• Valve Stem Diameter: 6mm
• Position: Exhaust
• Quantity: Set of 8 guides
• Manufacturer Part Number: GDE-NSR6-E-8

Improve cylinder head durability and heat dissipation in your Nissan SR20DE with this set of 12 Supertech Manganese Bronze exhaust valve guides. Engineered for 6mm valve stems, these high-performance guides (MPN: GDE-NSR6-E-12) are designed to withstand the extreme thermal loads found in turbocharged and high-RPM naturally aspirated builds.

Manganese bronze is preferred by engine builders over standard cast iron due to its superior thermal conductivity and lower coefficient of friction. These attributes help pull heat away from the exhaust valve stems more efficiently while maintaining tighter tolerances over the service life of the engine. Whether you are performing a standard rebuild or a full race prep, these guides provide the stability required for precise valve seating.

• Material: Precision-machined Manganese Bronze alloy
• Application: Exhaust side only
• Compatibility: Designed for Nissan SR20DE engines with 6mm valve stems
• Quantity: Full set of 12 guides
• Part Number: GDE-NSR6-E-12

Fits Mini Cooper R56 models.

Precision-engineered for high-performance cylinder head builds, these Supertech valve guides are manufactured from high-quality manganese bronze. Designed to offer superior heat dissipation and reduced friction compared to standard cast iron guides, these components are an essential upgrade for engines running stainless steel or titanium valves.

Manganese bronze provides excellent wear resistance and maintains tight tolerances under extreme thermal stress, ensuring consistent valve stem alignment and sealing. Whether you are performing a standard top-end refresh or building a high-output engine, these guides provide the durability and precision needed for R56 cylinder heads.

• Material: Manganese Bronze
• Application: Intake and Exhaust (Standard Size)
• Quantity: Set of 8
• Manufacturer Part Number: GDE-MIN-R56-STD-8