Restore valvetrain stability and ensure precise valve stem alignment with this set of Supertech intake and exhaust valve guides. Engineered specifically for the Mini Cooper R56 equipped with the N14 engine, these guides are designed to provide a high-tolerance fit that facilitates efficient heat transfer and reduces stem wear under high-stress operating conditions.

Measuring 44.9mm in length, these guides are a critical component for any cylinder head rebuild, whether restoring factory performance or prepping for high-RPM use. This complete set includes eight guides, suitable for servicing both the intake and exhaust positions on your cylinder head.

• Fits: Mini Cooper R56 (N14 engine)
• Component: Intake and Exhaust Valve Guides
• Quantity: Set of 8
• Length: 44.9mm
• Manufacturer Part Number: GDE-MIN-R56-OS-8

This set of eight Supertech valve guides is engineered for high-performance cylinder head builds where durability and heat dissipation are critical. Precision-machined from a high-quality manganese bronze alloy, these guides offer superior thermal conductivity compared to standard cast iron components, helping to pull heat away from the valve stems more efficiently.

Specifically designed for the Mini Cooper R53 platform, these guides feature a low-friction surface that resists seizing and wear, even in the high-heat environment of a supercharged engine. They are compatible with both intake and exhaust positions, providing a consistent 6mm fitment for the valvetrain.

• Material: Manganese Bronze alloy for superior heat transfer and wear resistance
• Compatibility: Fits both intake and exhaust valve positions
• Stem Diameter: 6.00mm
• Quantity: Set of 8 guides
• Manufacturer Part Number: GDE-MIN-R53-8

This set of eight Supertech intake valve guides is engineered specifically for the Mitsubishi 4G63 engine series. Precision-machined from a high-quality manganese bronze alloy, these guides provide significantly better heat dissipation and a lower coefficient of friction than standard OEM cast iron components, ensuring valve stability under high thermal loads.

• Engine Application: Mitsubishi 4G63 Series
• Material: Manganese Bronze Alloy
• Valve Stem Diameter: 6.6mm
• Component Type: Intake Valve Guide
• Quantity: Set of 8
• Manufacturer Part Number: GDE-MI66-STI-8

Designed to maintain precise valve stem alignment and minimize guide wear, these components are an essential upgrade for high-performance cylinder head builds and high-boost applications where superior thermal management and lubricity are required.

When rebuilding a high-performance Mitsubishi 4G63 cylinder head, maintaining tight tolerances at the valve stem is critical for engine longevity and valve seal performance. This set of eight Supertech exhaust valve guides is designed specifically for the Mitsubishi 4G63 series engine to accommodate a 6.6mm valve stem.

Replacing worn factory guides with these precision-machined Supertech components ensures consistent valve seating and improves heat dissipation from the valve stem to the cylinder head casting. These guides are engineered to withstand the high thermal loads found on the exhaust side of turbocharged 4G63 applications, helping to prevent valve tipping and premature seal failure.

• Manufacturer Part Number: GDE-MI66-STE-8
• Engine Compatibility: Mitsubishi 4G63 Series
• Valve Stem Diameter: 6.6mm
• Position: Exhaust
• Quantity: Set of 8 guides

Fits Mitsubishi 4G63 engines.

Supertech manganese bronze valve guides are precision-machined to provide superior thermal conductivity and a low coefficient of friction. Designed for high-performance applications, these intake guides offer improved heat dissipation compared to factory cast iron components, which is critical for maintaining valve seat integrity and preventing stem seizure in high-boost or high-RPM environments. These guides are specifically engineered for use with 6.6mm valve stems, ensuring precise tolerances and long-term durability in built 4G63 cylinder heads.

• Engine Compatibility: Mitsubishi 4G63
• Material: Manganese Bronze
• Placement: Intake
• Stem Diameter: 6.6mm
• Quantity: Set of 8
• Manufacturer Part Number: GDE-MI66-I-8

Fits Mitsubishi 4G63 series engines.

Supertech Exhaust Valve Guides are engineered to maintain precise valve stem alignment and optimal heat transfer in high-performance cylinder heads. These precision-machined guides replace worn factory components to ensure stable valve operation, protecting your valvetrain from premature wear and helping to maintain consistent compression across all cylinders.

• Manufacturer Part Number: GDE-MI66-E-8
• Application: Exhaust valves
• Stem Diameter: 6.6mm
• Engine Compatibility: Mitsubishi 4G63
• Quantity: Complete set of 8 guides

Upgrade your cylinder head with this set of 8 Supertech Manganese Bronze intake valve guides, engineered specifically for the Mazda Miata (1.8L). These guides are precision-machined from a high-quality manganese bronze alloy, providing superior heat transfer and natural lubricity compared to standard cast iron components. This material choice is ideal for reducing friction and extending the life of your valvetrain in high-performance, forced induction, or high-RPM racing environments.

• Manufacturer Part Number: GDE-MA18-I-8
• Material: High-quality Manganese Bronze alloy
• Application: Mazda Miata (1.8L)
• Quantity: Set of 8 intake valve guides
• Optimized for superior thermal conductivity and wear resistance
• Precision machined for consistent valve stem clearances

Restore cylinder head precision with this set of eight Supertech exhaust valve guides, specifically engineered for Mazda (1.8L) engines. These guides are critical for maintaining exact valve stem alignment and facilitating efficient heat transfer from the valve to the cylinder head. Whether you are performing a standard refresh or a high-performance build, these guides provide the durability and tight tolerances necessary to prevent oil consumption and premature valve seat wear.

• Engineered for Mazda 1.8L exhaust valve applications
• Precision-machined for consistent stem-to-guide clearances
• Replaces worn factory guides to stabilize valve movement at high RPM
• Manufacturer Part Number: GDE-MA18-E-8
• Includes a complete set of 8 guides

Fits 2000-2009 Honda S2000.

Supertech manganese bronze valve guides are engineered for high-performance applications where thermal management and lubricity are critical. These intake guides serve as a superior replacement for factory components, offering significantly better heat dissipation and reduced friction between the valve stem and the guide. This is especially vital for the high-revving F20C and F22C engines, ensuring valve stability and longevity under demanding track or street conditions.

• Precision-machined from high-quality manganese bronze alloy
• Enhanced heat transfer properties compared to standard OEM cast iron guides
• Low-friction material improves valve stem life and performance
• Designed for 5.5mm valve stems
• Set of 8 intake guides
• Manufacturer Part Number: GDE-HS255-I-8

Fits 2000-2009 Honda S2000 (F20C / F22C1).

Supertech precision-machined manganese bronze valve guides are engineered for high-performance and racing applications where thermal efficiency and durability are paramount. These exhaust guides provide superior heat transfer and natural lubricity compared to factory cast iron components, significantly reducing the risk of valve seizing under high-load conditions. Specifically designed to work with 5.5mm valve stems, these guides are an essential upgrade during a cylinder head rebuild to ensure precise valve-to-seat alignment and extended valvetrain life.

• Material: High-quality Manganese Bronze for enhanced heat dissipation
• Stem Diameter: 5.5mm
• Position: Exhaust
• Quantity: Set of 8 guides
• Manufacturer Part Number: GDE-HS255-E-8

Fits select Honda K20 engines.

Maintain precise valve geometry and optimal heat transfer in your cylinder head with this set of Supertech exhaust valve guides. Engineered to exact tolerances for the K20 engine, these guides are essential for high-performance builds or standard cylinder head refreshes. Proper valve stem-to-guide clearance is critical for preventing oil consumption and ensuring consistent valve seating under high-stress conditions.

• Manufacturer Part Number: GDE-HM66-E-8
• Quantity: Set of 8
• Stem Diameter: 6.6mm
• Position: Exhaust
• Fitment: Honda K20 Series Engines

Fits Honda K-Series engines.

Optimize your cylinder head's performance and longevity with this set of Supertech manganese bronze intake valve guides. These guides are precision-engineered for the Honda K-Series platform, specifically designed to accommodate a 5.5mm valve stem. Manganese bronze is a superior material choice for high-performance builds, offering significantly better thermal conductivity and natural lubricity compared to standard cast iron guides.

By improving heat transfer away from the valve stem and maintaining tighter tolerances under extreme thermal loads, these guides help prevent valve seizing and minimize guide wear in high-RPM or forced induction applications. Each guide is machined to exacting specifications to ensure consistent oil clearance and stable valve seating.

• Material: High-quality Manganese Bronze
• Application: Intake Side
• Stem Diameter: 5.5mm
• Quantity: Set of 8
• Manufacturer Part Number: GDE-HK55-I-8

Fits Honda K-Series engines including K20 and K24 variants.

Supertech Manganese Bronze valve guides are engineered for high-performance and racing cylinder heads where heat dissipation and friction reduction are critical. These exhaust guides offer superior thermal conductivity compared to standard cast iron, effectively drawing heat away from the valve stems to prevent seizure and premature wear in high-RPM or forced induction environments. Precision machined for exact tolerances, they provide a stable and durable interface for 5.5mm valve stems.

• Precision machined from high-quality Manganese Bronze alloy
• Optimized for exhaust side thermal loads and wear resistance
• Compatible with 5.5mm valve stems
• Set of 8 individual valve guides
• Manufacturer Part Number: GDE-HK55-E-8

Fits Honda K20A2 engines.

Supertech manganese bronze valve guides are precision-machined to offer superior heat transfer and thermal conductivity compared to standard OEM components. Specifically engineered for high-performance and racing applications, these guides provide excellent lubricity, reducing friction and preventing premature stem wear during high-RPM operation.

This set of eight exhaust guides is designed for 6mm valve stems and features a specialized alloy composition for increased durability under extreme exhaust temperatures. For a complete and proper installation, these guides must be used with Supertech VS-TS6E valve seals.

• Material: Manganese Bronze
• Stem Diameter: 6mm
• Application: Exhaust
• Quantity: Set of 8
• Compatibility Requirement: Use with Supertech VS-TS6E seals
• Manufacturer Part Number: GDE-HK55-E-6MM-8

Fits Honda D-Series and K-Series engines (Intake Side).

Supertech Manganese Bronze valve guides are precision-engineered to replace worn factory components in high-performance or high-mileage cylinder heads. Manufactured from a specialized manganese bronze alloy, these guides offer significantly improved heat transfer and superior wear resistance compared to standard cast iron guides.

The alloy's low friction properties help prevent stem-to-guide galling and seizing, which is critical for engines running high-lift camshafts and increased valve spring pressures. These guides are CNC-machined to exacting tolerances for a consistent 5.5mm stem fitment and are designed to withstand the thermal stresses of high-RPM operation.

• Material: Manganese Bronze Alloy
• Application: Intake Valve Guide
• Stem Diameter: 5.5mm
• Engine Series: Honda D-Series and K-Series
• Quantity: Set of 8
• Manufacturer Part Number: GDE-HD55-I-8

Fits Honda D-Series and K-Series engines requiring 5.5mm stem exhaust valves. These Supertech manganese bronze valve guides are precision-engineered for high-performance and racing environments where heat management and wear resistance are critical.

Manganese bronze is an ideal material for valve guides in forced induction or high-RPM applications because of its superior thermal conductivity and low-friction properties. These guides help maintain precise valve alignment and ensure a consistent seat seal throughout the heat cycles of a performance engine. Each guide is CNC-machined to exacting tolerances for a reliable press-fit into the cylinder head casting.

• Material: High-quality Manganese Bronze alloy
• Application: Exhaust side
• Stem Diameter: 5.50mm
• Quantity: Set of 8 guides
• Manufacturer Part Number: GDE-HD55-E-8

Upgrade your cylinder head with this set of eight Supertech manganese bronze intake valve guides, engineered specifically for Honda B-series and H-series engines. These guides are a precision-machined solution for replacing worn factory components or for use in high-performance builds requiring tighter tolerances and better heat management.

Supertech utilizes a specialized manganese bronze alloy that offers superior thermal conductivity and a lower coefficient of friction compared to standard cast iron guides. This material choice ensures exceptional wear resistance and is fully compatible with both stainless steel and titanium valves, making them ideal for high-RPM racing applications. Each guide is designed for a 5.5mm valve stem to ensure stable valve movement and consistent seating.

• Manufacturer Part Number: GDE-HB55-I-8
• Material: Manganese Bronze
• Application: Intake valves
• Stem Diameter: 5.5mm
• Engine Fitment: Honda B-Series and H-Series
• Quantity: Set of 8 guides

Restore valvetrain stability and improve heat dissipation with this set of eight Supertech Manganese Bronze exhaust valve guides. Specifically engineered for Honda B-Series and H-Series cylinder heads, these guides are precision-machined to ensure tight tolerances and reduced friction compared to standard OEM components.

Manganese bronze is the preferred material for high-performance and high-RPM applications due to its superior thermal conductivity and wear resistance. These guides are designed to accommodate 5.5mm valve stems, providing the necessary durability for both street and competition builds where consistent valve-to-seat alignment is critical.

• Material: Precision-machined Manganese Bronze
• Valve Stem Diameter: 5.50mm
• Configuration: Exhaust side
• Fitment: Honda B-Series and H-Series engines
• Quantity: Set of 8
• Part Number: GDE-HB55-E-8

Fits Honda LS and H23 series engines.

Ensure precise valve movement and improved heat dissipation in your cylinder head with this set of 8 Supertech manganese bronze intake valve guides. Engineered for performance Honda LS and H23 builds, these guides replace worn factory components with a material designed to withstand high-RPM stress and elevated operating temperatures.

Manganese bronze is the preferred material for performance valvetrains due to its superior thermal conductivity and inherent lubricity. These guides help pull heat away from the intake valve stems more efficiently than standard iron guides while reducing friction and stem wear. Each guide is precision-machined to accommodate a 6.6mm stem diameter, providing the tight tolerances required for high-performance applications.

• Compatibility: Honda LS / H23 Series engines
• Material: High-quality Manganese Bronze alloy
• Valve Stem Diameter: 6.6mm
• Position: Intake side
• Quantity: Set of 8 guides
• Manufacturer Part Number: GDE-H66-I-8

Fits select Honda B18A, B18B, and H23 engines.

Restore cylinder head precision and ensure optimal heat dissipation with these Supertech exhaust valve guides. Engineered for consistent stem-to-guide clearances, these components are critical for maintaining stable valve geometry and preventing accelerated seat wear in high-performance or high-mileage applications.

• Engineered specifically for 6.6mm exhaust valve stems
• Precision-machined tolerances for superior fitment and stability
• Direct replacement for worn OE exhaust guides
• Manufacturer Part Number: GDE-H66-E-8
• Includes: Set of 8 Exhaust Valve Guides

Fits select Ford Duratec and Mazda MZR engines (2.0L / 2.3L).

Designed to restore precise valve stem stability and optimal heat dissipation, these Supertech valve guides are an essential component for any 2.0L or 2.3L Duratec/MZR cylinder head rebuild. Over time, factory guides develop excessive stem-to-guide clearance, which can lead to increased oil consumption, inconsistent valve seating, and accelerated valvetrain wear. These precision-machined guides are engineered to maintain tight tolerances and withstand the thermal stresses of high-performance street or track applications.

• Manufacturer Part Number: GDE-DUR16-8
• Includes a set of 8 valve guides
• Compatible with both intake and exhaust valve positions
• Engineered for improved durability and wear resistance compared to standard OE components
• Provides a stable foundation for precise valve timing and sealing

Restore cylinder head reliability and valve stability in your Mazda MZR (2.3L) engine with this set of precision-machined Supertech intake and exhaust valve guides. These guides are engineered to maintain tight tolerances and optimal valve stem-to-guide clearance, preventing excessive oil consumption and ensuring consistent valve seating under high-stress conditions.

• Fits Mazda MZR (2.3L) engines
• Designed for 6mm diameter valve stems
• Precision-machined for consistent tolerances and durability
• Direct replacement for worn or damaged OE valve guides
• Manufacturer Part Number: GDE-DUR16-6MM-8
• Quantity: Set of 8 guides

Designed for high-performance BMW S54 engines, this set of 12 Supertech valve guides provides the precision and durability required for high-RPM applications. These guides are compatible with both intake and exhaust valves, providing a comprehensive solution for a full cylinder head refresh.

Constructed from a proprietary manganese bronze alloy, these guides offer superior thermal conductivity and a low coefficient of friction. This material choice is specifically engineered to improve heat transfer from the valve stem to the cylinder head while reducing wear on the valve stems themselves, even under extreme racing conditions. Each guide is precision-machined to ensure tight tolerances and consistent oil film retention.

• Engine Application: BMW S54 (3.2L I6)
• Material: Manganese Bronze Alloy
• Valve Stem Diameter: 6.00mm
• Outer Diameter: 12.03mm
• Includes: 12 Valve Guides
• Manufacturer Part Number: GDE-BMW-S54-EI-12

Fits select BMW M42, M50, S50, and S52 engines.

Designed for high-performance cylinder head rebuilds, this set of 12 Supertech valve guides provides the precision tolerances required for stable valve stem alignment and efficient heat transfer. These guides are engineered to replace worn factory components, ensuring consistent valve seating and reduced oil consumption under high-RPM or boosted conditions.

• Application: Intake and Exhaust positions
• Stem Diameter: 6mm
• Outer Diameter: 12.56mm
• Quantity: Set of 12 guides
• Manufacturer Part Number: GDE-BMW-M50-EI-12

Whether you are performing a standard refresh or a full race build, these guides offer the durability needed to maintain valvetrain integrity in BMW inline-four and inline-six powerplants.

Fits Audi 1.8T engines.

Supertech Manganese Bronze valve guides are precision-engineered to provide superior heat transfer and wear resistance compared to standard OEM guides. These intake and exhaust guides are crafted from a high-quality manganese bronze alloy, specifically designed for high-performance cylinder head builds where thermal conductivity and low friction are critical for valve stem longevity.

• Material: Manganese Bronze alloy
• Application: Intake and Exhaust
• Outer Diameter (OD): 11.045mm
• Quantity: Set of 8
• Manufacturer Part Number: GDE-AU18T-8

Designed for an exact fit, these guides replace worn factory components and are suitable for both street and track applications requiring high-tolerance engine internals.

Fits select Audi 1.8T and 2.7T engines.

These Supertech valve guides are precision-machined from high-quality manganese bronze, designed to replace worn factory guides in high-performance or forced-induction applications. Manganese bronze offers significantly better thermal conductivity and a lower coefficient of friction than standard cast iron, helping to dissipate heat from the valve stem and reduce guide wear under extreme conditions.

Each guide is finished to a specific 11.045mm outer diameter to ensure a secure, reliable press-fit into the cylinder head. This set is compatible with both intake and exhaust valve positions and provides the durability required for high-RPM or boosted setups.

• Material: High-strength Manganese Bronze
• Outer Diameter: 11.045mm
• Quantity: Set of 12 guides
• Application: Intake and Exhaust positions
• Manufacturer Part Number: GDE-AU18T-12

This set of 10 Supertech manganese bronze valve guides is engineered for Audi cylinder head builds requiring tighter tolerances and superior thermal management. Manganese bronze is the preferred material for high-performance applications due to its excellent wear resistance and its ability to dissipate heat away from the valve stem more effectively than factory cast iron guides.

Precision-machined for a consistent fit, these guides are suitable for both intake and exhaust positions. They help maintain precise valve alignment, reducing friction and extending the life of your valvetrain components in high-RPM or forced induction environments.

• Manufacturer Part Number: GDE-AU18T-10
• Material: High-quality Manganese Bronze
• Outer Diameter: 11.045mm
• Length: 36.15mm
• Inner Diameter: 5.98mm
• Application: Intake and Exhaust valves
• Quantity: Set of 10 guides

Fits Subaru EJ205, EJ207, and EJ257 engines.

Engineered for high-performance builds, these GSC Power-Division manganese bronze exhaust valve guides are a critical upgrade for Subaru EJ-series cylinder heads. Manganese bronze provides significantly better heat transfer than standard cast iron guides and offers a lower coefficient of friction for the valve stem, reducing wear in high-stress turbocharged applications.

The stopper style design features a machined shoulder to ensure a precise, repeatable installation depth every time. This prevents guide migration, a common failure point in high-heat or high-RPM environments. This bulk pack of 240 pieces (MPN B3025) is ideal for professional engine builders and machine shops processing multiple heads.

• Material: High-strength Manganese Bronze for superior thermal conductivity
• Style: Stopper style (machined shoulder for positive seating)
• Location: Exhaust side
• Fitment: Subaru EJ205, EJ207, and EJ257 platforms
• Quantity: Bulk set of 240
• Manufacturer Part Number: B3025

Fits 1999-2013 Porsche 911 GT3 Cup models (996 and 997 generations).

This GSC Power-Division valve guide is engineered to meet the high-revving demands of Porsche GT3 Cup engines. Compatible with both intake and exhaust ports, this standard-style guide features a +.001" oversize outside diameter (OD). This slight oversize is critical for maintaining a proper interference fit in cylinder heads where the original guide bores have been slightly enlarged or worn during service.

• Universal application for intake or exhaust ports on 996/997 GT3 Cup heads
• +.001" oversize OD ensures a secure fit in worn or oversized guide bores
• Standard style design for factory-like installation and performance
• Precision machined for consistent valve stem alignment and heat transfer
• Sold as a single unit
• Manufacturer Part Number: 3997.001-1

Fits 1999-2011 Porsche 911 GT3 Cup (996 and 997 generations).

Engineered for the high-stress environment of Porsche GT3 Cup racing engines, these GSC Power-Division (P-D) valve guides are precision-machined from a manganese bronze alloy. This material offers superior thermal conductivity to pull heat away from the valve stem and provides excellent lubricity to minimize wear during sustained high-RPM operation.

These standard-style (STD) guides are designed for direct installation in both intake and exhaust positions. This set of 12 provides the necessary components for a comprehensive cylinder head refresh, ensuring precise valve stem alignment and optimized heat dissipation for high-performance track use.

• Material: High-thermal conductivity Manganese Bronze
• Position: Compatible with Intake and Exhaust valves
• Sizing: Standard (STD) style profile
• Quantity: Complete set of 12 guides
• Manufacturer Part Number: 3997-12