Fits 1996-2000 Honda Civic and 1996-1997 Honda Civic del Sol (D16Y engines).

The ARP 208-4305 Head Stud Kit is a critical upgrade for any D16Y engine build, providing the superior clamping force necessary to prevent cylinder head lifting and head gasket failure. Unlike factory torque-to-yield bolts that stretch during installation and must be discarded after one use, these ARP studs are manufactured from premium 8740 chromoly steel and are reusable. This kit ensures even load distribution across the cylinder head, making it an essential component for both high-mileage refreshes and high-performance turbocharged or high-compression naturally aspirated setups.

• Manufacturer Part Number: 208-4305
• Thread-rolled after heat-treat for optimum fatigue strength
• Precision-ground parallel washers for even load distribution
• 12-point nuts included for secure torquing in tight clearances
• Black oxide finish for corrosion resistance
• Includes all necessary studs, nuts, and washers for one engine

Fits 1993-2001 Honda Prelude models including Base, Type SH, and VTEC trims with H22-series engines.

Ensure the structural integrity of your high-performance engine with the ARP Honda Prelude Head Stud Kit (208-4304). These studs are engineered to provide significantly more clamping force than factory head bolts, acting as a critical safeguard against cylinder head lift and head gasket failure in both naturally aspirated and forced induction H22-series builds.

Each component is manufactured from premium high-strength alloy, heat-treated for maximum durability, and thread-rolled to ensure superior fatigue life. This comprehensive kit comes complete with all necessary hardware for a professional installation.

• Manufacturer Part Number: 208-4304
• Essential for high-compression or boosted H22 engine builds
• Heat-treated and thread-rolled for maximum strength and fatigue resistance
• Includes premium 12-point nuts and parallel-ground washers
• Replaces factory head bolts for improved torque consistency

Vehicle Fitment:

Fits 1994-2001 Acura Integra GS-R and Type R (B18C1 VTEC).

The ARP 208-4303 12-Point Head Stud Kit is an essential upgrade for any high-performance B-Series build. Unlike standard factory head bolts that can stretch under high combustion pressures, these studs provide a superior, uniform clamping force across the cylinder head. This helps prevent head lift and protects your head gasket during high-RPM operation, high-compression builds, or forced induction applications.

• Replaces OE head bolts with high-strength studs for improved reliability
• 12-point nuts provide easier access and more accurate torqueing in tight spaces
• Ensures consistent loading on the head gasket to prevent leaks and failure
• Direct fit for B18C1 VTEC engines
• Manufacturer Part Number: 208-4303

Fits 1990-2001 Acura Integra GS, LS, RS, and Special Edition models equipped with the B18A1 engine.

Ensure your engine's top-end integrity with the ARP 208-4302 head stud kit. Specifically designed for B18A1 powerplants, these studs provide superior clamping force compared to factory head bolts, preventing cylinder head lifting and head gasket failure during high-stress operation. By using studs rather than bolts, you ensure more accurate torque loading and protect the threads in your engine block.

This kit features 12-point nuts for a secure grip and easier installation in the recessed areas of the B-series head. Each kit is manufactured to exacting tolerances to ensure a perfect fit and long-term reliability for your build.

• Manufacturer Part Number: 208-4302
• Fastener Style: 12-Point Nut
• Engine Application: Honda/Acura B18A1
• Kit Includes: Full set of head studs, 12-point nuts, and parallel-ground washers

Fits 1992-1995 Honda Civic and Civic del Sol (D16A / D16Z engines).

Ensure your cylinder head stays securely seated under high combustion pressures with the ARP M10 Head Stud Kit. This kit is a critical upgrade for D-series engines, replacing the factory torque-to-yield bolts that are prone to stretching, especially in high-RPM or forced induction applications. By using studs instead of bolts, you achieve more accurate torque loading and prevent the fastener from twisting into the block during installation, resulting in a superior seal that protects your head gasket.

• Engineered specifically for Honda D16A and D16Z M10 applications
• Provides consistent clamping force to prevent cylinder head lift
• Threads are rolled after heat-treatment for maximum fatigue strength
• Simplifies engine assembly by properly aligning the head and gasket
• Kit includes high-strength studs, parallel-ground washers, and 12-point nuts
• Manufacturer Part Number: 208-4301

Fits select 1995-2006 Eagle Talon and Mitsubishi Eclipse or Lancer Evolution (4G63).

Secure your cylinder head with the industry-standard ARP M11 Head Stud Kit (MPN 207-4702). Designed specifically for the Mitsubishi 4G63 engine, these studs provide significantly higher clamping force than factory torque-to-yield head bolts. This prevents cylinder head lift and gasket failure, especially in high-boost or high-compression applications where cylinder pressures exceed stock limits.

• Replaces factory head bolts to improve head gasket sealing and engine reliability.
• Manufactured from premium 8740 chrome moly steel, heat-treated to 200,000 psi tensile strength.
• J-form threads are rolled after heat treatment for maximum fatigue life and strength.
• M11 thread sizing for precise fitment in the 4G63 block.
• Complete kit includes 10 studs, 10 parallel-ground washers, 10 12-point nuts, and ARP Ultra-Torque assembly lubricant.

Fits 1990-1994 Mitsubishi Eclipse, Eagle Talon, and Plymouth Laser models equipped with the 4G63 engine.

The ARP 207-4701 M12 Head Stud Kit is a critical fastener upgrade for performance engines, providing the consistent clamping force necessary to prevent head gasket failure and cylinder head lift. Unlike factory head bolts that can stretch under the high cylinder pressures of turbocharged or high-compression builds, these ARP studs are manufactured to exacting tolerances to ensure a reliable seal between the block and the head.

• Manufacturer Part Number: 207-4701
• Thread Size: M12
• Engine Compatibility: Mitsubishi 4G63
• Kit Includes: High-strength head studs, 12-point nuts, and parallel-ground washers
• Design: Precision-machined for a direct-fit replacement of OE fasteners

Fits select 1994-2006 Mitsubishi Lancer Evolution and Eclipse, Eagle Talon, and Plymouth Laser models equipped with the 4G63 engine.

When building a high-horsepower 4G63, cylinder head lift is a primary concern. The ARP Custom Aged 625+ Head Stud Kit is engineered to provide the clamping force necessary for extreme boost and high-compression applications. These M11 studs are manufactured from a super-alloy that is heat-treated and custom-aged to achieve a typical tensile strength of 260,000 to 280,000 psi, significantly exceeding standard ARP2000 and chromoly hardware.

Each stud is centerless ground to ensure perfect concentricity and thread-rolled after heat-treating to provide ten times the fatigue life of studs with threads cut before heat-treating. This kit provides a reliable seal for your head gasket under the most demanding racing conditions, ensuring your engine stays together when it matters most.

• Manufacturer Part Number: 207-4302
• Material: Custom Aged 625+ Super-Alloy
• Fastener Style: Stud
• Thread Size: M11
• Includes: Complete set of studs, parallel-ground washers, and 12-point nuts

Fits 2008-2014 Mitsubishi Lancer Evolution GSR, MR, and MR Touring (4B11).

Ensure maximum clamping force and cylinder head stability with the ARP CA625+ Head Stud Kit. Designed specifically for high-output Mitsubishi 4B11 engines, these studs are a critical upgrade for builds running high boost or high cylinder pressures where factory head bolts are prone to stretching, leading to blown head gaskets and head lift.

Constructed from ARP's proprietary Custom Age 625+ super-alloy, this kit offers significantly higher tensile strength than standard 8740 chromoly. Each stud is centerless ground and thread-rolled after heat treatment to ensure optimum fatigue strength and a precision fit. This kit provides the reliability needed for professional-grade racing and high-performance street builds.

• Manufacturer Part Number: 207-4207
• Material: Custom Age 625+ Super-Alloy
• Engine Compatibility: Mitsubishi 2.0L 4B11 Turbo
• Includes: 10 head studs, 12-point nuts, and parallel-ground washers
• Engineered to prevent head gasket failure and head lift

Fits 2008-2014 Mitsubishi Lancer Evolution GSR, MR, and MR Touring models equipped with the 2.0L 4B11 engine.

The ARP 207-4206 head stud kit is a critical upgrade for the 4B11 turbo engine, providing significantly more clamping force than factory torque-to-yield head bolts. This added strength is essential for high-performance builds to prevent cylinder head lifting and head gasket failure under increased boost and cylinder pressures. Each stud is manufactured from premium alloy, heat-treated for superior fatigue strength, and centerless ground to ensure concentricity.

• Replaces factory cylinder head bolts for improved engine reliability
• Thread-rolled after heat-treatment for maximum fatigue life
• Engineered specifically for the Mitsubishi 2.0L (4B11) engine platform
• Includes all necessary studs, parallel-ground washers, and 12-point nuts
• Manufacturer Part Number: 207-4206

Fits select 1992-2005 Mitsubishi 3000GT, Diamante, Eclipse, and Dodge Stealth (6G72 DOHC).

Engineered to handle the extreme cylinder pressures of high-performance 6G72 DOHC builds, the ARP 207-4205 Head Stud Kit is a vital upgrade for anyone moving beyond factory power levels. Unlike standard torque-to-yield head bolts that stretch and weaken with heat cycles, these studs provide a superior, consistent clamping force to keep the cylinder head sealed and prevent head gasket failure under boost or high-load conditions.

Each stud is manufactured to exacting tolerances, with threads rolled after heat-treatment to ensure maximum fatigue strength. The studs facilitate easier cylinder head installation by centering the head and gasket on the block, while the high-strength 12-point nuts and hardened parallel-ground washers ensure even load distribution across the casting.

• Manufacturer Part Number: 207-4205
• Application: Mitsubishi 6G72 DOHC 24V engines
• Clamping Strength: Superior to OEM head bolts to prevent head lifting
• Construction: Threads rolled after heat-treat for fatigue resistance
• Included Hardware: High-strength studs, 12-point nuts, and parallel-ground washers

Fits 1995-2006 Mitsubishi Lancer Evolution 8/9, Eclipse GST/GSX, and Eagle Talon TSi (4G63 7-bolt engines).

Secure your 4G63's cylinder head with the industry standard for high-performance clamping. The ARP Head Stud Kit (207-4203) is designed to replace factory torque-to-yield (TTY) bolts that can stretch under high boost and combustion pressure, leading to blown head gaskets or head lift. Whether you are refreshing a 2nd Gen DSM or pushing an Evo 8/9 on the track, these studs provide the fatigue strength and reliability required for forced induction applications.

Each stud is manufactured from premium 8740 chrome moly steel, heat-treated to 200,000 psi tensile strength, and centerless ground for precise alignment. The threads are rolled after heat treatment to ensure superior fatigue resistance compared to lesser fasteners.

• Manufacturer Part Number: 207-4203
• Engine Fitment: 4G63 7-Bolt (2nd Gen / Evolution)
• Material: Heat-treated 8740 chrome moly steel
• Tensile Strength: 200,000 psi
• Includes 10 studs, 10 parallel-ground washers, and 10 12-point nuts
• Includes ARP Ultra-Torque Fastener Assembly Lubricant

Fits 1983-1989 Chrysler Conquest and Mitsubishi Starion equipped with the 2.6L engine.

Protect your engine's head gasket and prevent cylinder head lift with the ARP 12-Point Head Stud Kit. For high-performance or turbocharged builds, factory head bolts can stretch under increased cylinder pressures, leading to catastrophic gasket failure. These ARP studs provide significantly higher clamping force and more accurate torque readings than standard OE hardware, ensuring a reliable seal under extreme conditions.

• Replaces factory head bolts to improve engine reliability and sealing
• Features 12-point nuts for easier access in tight cylinder head casting areas
• Manufactured for high tensile strength and fatigue resistance
• Includes all necessary studs, nuts, and washers for a complete installation
• Manufacturer Part Number: 207-4202

Fits 1990-1994 Mitsubishi Eclipse (GS, GSX), Eagle Talon TSi, and Plymouth Laser RS.

The ARP 207-4201 head stud kit is a critical upgrade for any 4G63T engine, particularly those running increased boost levels or higher compression. Unlike standard factory head bolts that are designed to stretch, ARP head studs provide the superior clamping force needed to prevent cylinder head lift and head gasket failure. Each stud is centerless ground to ensure perfect concentricity and thread-rolled after heat treatment for maximum fatigue strength.

• Manufactured from premium 8740 chrome moly steel
• Rated at 200,000 psi tensile strength for high-performance applications
• Precision J-form threads rolled after heat treatment for superior strength
• Includes all necessary studs, parallel-ground washers, and 12-point nuts
• Manufacturer Part Number: 207-4201

Fits select 1994-2006 Mitsubishi Eclipse, Lancer Evolution, Eagle Talon, and Plymouth Laser (2.0L).

ARP head bolts provide the critical clamping force required to maintain a reliable cylinder head seal on the Mitsubishi 4G63 engine, especially under increased boost or high-compression conditions. Unlike factory torque-to-yield (TTY) bolts that must be replaced after every use, these ARP fasteners are manufactured from 8740 chrome moly steel and are fully reusable.

Each bolt is heat-treated to a 200,000 psi tensile strength and features threads rolled after heat treatment for significantly higher fatigue strength compared to standard hardware. This kit is a direct upgrade for the 7-bolt 4G63 found in later DSM models and the Evolution VIII/IX, ensuring your head stays seated during high-performance operation.

• Manufacturer Part Number: 207-3900
• Engine: 4G63 DOHC 2.0L
• Material: 8740 Chrome Moly Steel
• Tensile Strength: 200,000 psi
• Finish: Black Oxide
• Thread-rolled after heat treat for maximum durability

The ARP 206-4207 Head Stud Kit provides the superior clamping force required for high-performance Triumph TR4 engines. Unlike standard cylinder head bolts that twist during the torqueing process, these studs remain stationary, allowing for more accurate torque loading and a consistent seal that prevents head gasket failure under increased combustion pressures.

• Direct fit for Triumph TR4 engines
• 12-point nut design offers a smaller profile for easier socket access in tight cylinder head areas
• Heat-treated and precision-machined for maximum strength and fastener longevity
• Complete kit includes all necessary studs, 12-point nuts, and parallel-ground washers
• Manufacturer Part Number: 206-4207

Secure your engine's top end with the ARP BMC A-Series 11-stud head stud kit. Specifically engineered for A-Series blocks using the 11-stud head configuration, this kit replaces factory head bolts to provide the superior clamping force and consistent preload required for high-performance use. By using studs instead of bolts, you ensure more accurate torque loading and prevent threads from pulling out of the engine block.

Constructed from premium 8740 chrome moly steel, these studs are heat-treated to a tensile strength of 190,000 psi. The threads are rolled after heat treatment, a process that results in significantly higher fatigue strength compared to studs with threads cut before heat treating. This kit is essential for any high-compression or forced-induction A-Series build to prevent head gasket failure and cylinder head lifting.

• Fits BMC A-Series engines with 11-stud cylinder head configurations
• Manufactured from high-strength 8740 chrome moly steel
• Rated at 190,000 psi tensile strength for maximum reliability
• Threads rolled after heat treatment for superior fatigue resistance
• Includes premium 12-point nuts and parallel-ground washers
• Manufacturer Part Number: 206-4204

Ensure a reliable head gasket seal on your BMC A-Series engine with this ARP 9-stud head stud kit. Designed to replace factory head bolts, these studs provide the consistent clamping force required for high-performance and high-compression builds. Unlike bolts that twist during tightening, studs allow for more accurate torque loading by pulling the cylinder head down vertically, preventing head lift and gasket failure.

• Fits BMC A-Series engines with 9-stud cylinder head configurations.
• Manufactured from premium 8740 chromoly steel for superior tensile strength.
• Heat-treated to 200,000 psi to handle extreme cylinder pressures.
• Precision J-form threads are rolled after heat-treatment for maximum fatigue resistance.
• Complete kit includes high-strength 12-point nuts and hardened parallel-ground washers.
• Manufacturer Part Number: 206-4201

Fits 2002-2008 Mini Cooper Base and 2008 Mini Cooper Clubman models.

The ARP 206-3601 head bolt kit is a critical upgrade for engine builds or routine head gasket replacements. These high-performance fasteners are engineered to provide superior clamping force compared to standard OEM bolts, which is essential for maintaining a consistent cylinder head seal and preventing head lifting under high-load conditions.

Each bolt in this kit is manufactured from premium grade alloy steel. ARP heat-treats the fasteners before thread rolling and machining, a process that ensures maximum fatigue strength and precision tolerances. This kit provides the reliability needed for both daily driving and performance applications where factory fasteners may reach their elastic limit.

• Manufacturer Part Number: 206-3601
• Compatible with 2002-2008 Mini Cooper models
• Constructed from high-strength heat-treated alloy
• Precision-rolled threads for optimal engagement and load distribution
• Designed as a direct replacement for factory cylinder head hardware

Ensure superior cylinder head sealing and prevent head lift under high boost with the ARP ARP2000 Series Head Stud Kit. Specifically engineered for Audi RS3 and TT-RS models equipped with the 2.5T engine, these studs provide significantly higher clamping force and consistency compared to factory torque-to-yield (TTY) bolts.

Manufactured from ARP2000 alloy, these fasteners are heat-treated to a tensile strength of 220,000 psi. Unlike lesser fasteners, ARP rolls the threads after heat treatment, which improves fatigue life by up to 1000%. This kit is a critical upgrade for any 2.5T build utilizing increased boost levels, ethanol fuels, or upgraded turbochargers where combustion pressures exceed OE tolerances.

• Fits Audi RS3 and TT-RS (2.5T)
• Material: ARP2000 Alloy
• Tensile Strength: 220,000 psi
• Design: J-form threads rolled after heat treat for maximum fatigue strength
• Includes: High-strength head studs, parallel-ground washers, 12-point nuts, and ARP Ultra-Torque fastener assembly lubricant
• Manufacturer Part Number: 204-4708

Fits 1982-1983 Volkswagen Rabbit Pickup (1.9L).

Ensure your engine's reliability under high combustion pressures with the ARP 204-4706 Head Stud Kit. Designed specifically for the high-compression environment of turbo diesel engines, these studs provide significantly more clamping force than factory torque-to-yield (TTY) bolts, preventing cylinder head lift and head gasket failure. Each stud is manufactured from premium 8740 chrome moly steel, heat-treated to a 200,000 psi tensile strength, and thread-rolled after heat treatment to ensure superior fatigue strength.

• Manufacturer Part Number: 204-4706
• Material: 8740 Chrome Moly Steel
• Tensile Strength: 200,000 psi
• Construction: Thread-rolled after heat treat for maximum durability
• Fitment: 1982-1983 Volkswagen Rabbit Pickup Base
• Includes: High-strength head studs, parallel-ground washers, and 12-point nuts

Fits select 1995-2005 Volkswagen Golf GTI and GTI VR6 models.

The ARP 204-4705 head stud kit provides the superior clamping force required to prevent cylinder head lift and head gasket failure in high-performance Volkswagen VR6 engines. Unlike factory torque-to-yield (TTY) bolts that stretch during installation and must be discarded, these studs are manufactured to exacting tolerances and are designed for reuse and extreme reliability.

This kit features an undercut design, which equalizes the stretch of the stud to ensure more consistent loading across the cylinder head. The included 12-point nuts offer a reduced profile for easier socket access in the tight confines of the VR6 head. Whether you are performing a standard refresh or building a forced-induction setup, these studs are a critical upgrade for maintaining combustion chamber integrity.

• Manufacturer Part Number: 204-4705
• Fastener Style: Undercut Stud
• Nut Style: 12-Point
• Engine Compatibility: Volkswagen VR6
• Includes complete set of studs, 12-pt nuts, and washers

Fits 1985-2006 Volkswagen Golf models (Base, GL, GLS, GT, GTI, and special editions) equipped with 1.8L, 2.0L, or 1.8T engines.

The ARP 204-4701 Undercut Head Stud Kit provides the superior clamping force necessary to prevent cylinder head lifting and head gasket failure. These fasteners are designed to replace factory head bolts, which can stretch or fail under the increased cylinder pressures found in modified or high-mileage engines. The undercut design helps to equalize the stretch of the stud, providing a more consistent load and making the fastener more resilient to the thermal expansion and contraction cycles of the engine block and head.

By using studs rather than bolts, you ensure more accurate torque loading by eliminating the twisting force on the fastener during installation. This kit is a vital upgrade for forced induction builds or anyone seeking maximum engine reliability.

• Manufacturer Part Number: 204-4701
• Application: 1985-2006 Volkswagen Golf
• Engine Compatibility: 1.8L, 2.0L, 1.8T
• Design: Undercut studs for equalized stretch
• Includes high-strength studs, 12-point nuts, and parallel-ground washers

Fits 2005-2009 Audi A4 and A4 Quattro models equipped with the 2.0L FSI engine.

Essential for high-performance builds and turbocharged applications, the ARP 204-4302 head stud kit provides the superior clamping force required to prevent cylinder head lifting and head gasket failure. Unlike factory torque-to-yield (TTY) bolts that stretch during installation and must be discarded after one use, these ARP studs are reusable and manufactured to much tighter tolerances to ensure even load distribution across the deck surface.

Each stud is crafted from premium 8740 chrome moly steel, heat-treated to 200,000 psi tensile strength, and centerless ground to ensure perfect concentricity. The threads are rolled after heat-treating, which significantly improves fatigue strength compared to studs with cut threads. This kit comes complete with parallel-ground washers and 12-point nuts for precise torque loading.

• Manufacturer Part Number: 204-4302
• Material: 8740 Chrome Moly steel
• Tensile Strength: 200,000 psi
• Includes: Full set of head studs, 12-point nuts, and parallel-ground washers
• Note: Recommended for all performance Audi 2.0L FSI engine assemblies

Fits select 1990-1995 Audi 90 Quattro, 200 Quattro, Coupe Quattro, S4, and S6 (5-Cylinder 20V).

Engineered for high-performance engine builds, the ARP 12-point head stud kit provides the superior clamping force necessary to maintain head gasket integrity under increased cylinder pressures. Unlike factory torque-to-yield (TTY) bolts that stretch and must be replaced after every use, these premium fasteners allow for accurate torque loading and are reusable, making them an essential upgrade for both street and track-driven Audi 5-cylinder 20V engines.

• Manufacturer Part Number: 204-4207
• Fastener Style: Stud
• Head Style: 12-Point Nut
• Engine Compatibility: Audi 5-Cylinder 20V
• Construction: Premium grade hardware for consistent preload

Vehicle Fitment:

Fits select 1976-1997 Porsche 911 Turbo, 911 Turbo 3.6, 911 Turbo Carrera, and 930 Turbo models.

The ARP Stainless Steel (SS) Head Stud Kit provides the superior clamping force and reliability required for air-cooled Porsche turbocharged engines. Designed to replace factory hardware, these studs are engineered to prevent cylinder head lift and gasket failure during high-boost operation. Each stud is manufactured from a high-strength stainless steel alloy that is heat-treated and precision-ground to ensure uniform load distribution across the cylinder head.

• Manufacturer Part Number: 204-4206
• Material: High-tensile Stainless Steel
• Optimized for Porsche 911/930 Turbo applications
• Maintains consistent clamping pressure through extreme thermal cycles
• Corrosion-resistant finish for long-term durability
• Includes a complete set of studs, nuts, and washers

Fits 1985-2006 Volkswagen Golf models with 1.8L and 1.8T engines.

The ARP 1.8L 16-Valve Head Stud Kit (MPN 204-4204) is an essential upgrade for any high-performance or forced induction build. These fasteners replace the factory stretch bolts, which are prone to yielding under high cylinder pressures. By utilizing studs instead of bolts, you achieve more accurate torque loading and provide a more uniform clamping force across the cylinder head, significantly reducing the risk of head gasket failure.

• Manufactured from premium 8740 chrome moly steel for extreme durability
• Heat-treated to a 200,000 psi tensile strength rating
• J-form threads rolled after heat-treat for superior fatigue resistance
• Includes all necessary hardened parallel-ground washers and 12-point nuts
• Simplifies cylinder head installation and alignment
• Manufacturer Part Number: 204-4204

Fits 1985-2006 Volkswagen Golf models (1.8L / 1.8T) including GTI, GL, and GLS submodels.

This ARP Head Stud Kit is a critical upgrade for maintaining cylinder head-to-block sealing integrity. Unlike factory head bolts that are designed to stretch once, these high-strength studs provide superior clamping force and more consistent torque loading. Whether you are performing a standard engine refresh or building a high-performance 1.8T application with increased boost, this kit ensures your head gasket remains properly seated under high combustion pressures.

• Specifically designed for Volkswagen 1.8L and 1.8T engine platforms
• Provides superior clamping force compared to OE head bolts
• Essential for high-performance and forced induction builds
• Facilitates easier cylinder head installation and alignment
• Manufacturer Part Number: 204-4203

Fits 2000-2005 Audi S4, A6 Quattro, and Allroad Quattro (2.7L V6 Bi-Turbo).

The ARP 204-4105 Head Stud Kit is a critical engine hardware upgrade for the 2.7L Bi-Turbo V6. Unlike factory torque-to-yield (TTY) bolts that stretch during installation and must be discarded after every use, these premium head studs provide superior clamping force and can be reused. This kit is essential for preventing head gasket failure and cylinder head lifting in high-boost or high-performance applications.

• Manufacturer Part Number: 204-4105
• Engine Fitment: 2.7L Bi-Turbo V6
• Material: Heat-treated for maximum tensile strength and durability
• Threads: Precision rolled after heat treat for optimum fatigue strength
• Includes: Complete set of head studs, hardened parallel washers, and premium 12-point nuts

Fits select 1998-2006 Audi and Volkswagen models equipped with the 1.8L 20V Turbo engine (1.8L / 1.8T).

Secure your cylinder head with the industry standard in fastener technology. This ARP head stud kit is designed to provide superior clamping force compared to factory torque-to-yield (TTY) bolts, which can stretch or fail under the high cylinder pressures common in turbocharged applications. By using studs instead of bolts, you ensure more accurate torque loading and prevent threads from pulling out of the engine block during installation. This kit is a critical upgrade for any 1.8T build, from stock daily drivers to high-boost performance projects.

• Manufacturer Part Number: 204-4104
• Thread Size: M10
• Material: High-strength alloy construction for maximum fatigue life
• Includes: Complete set of head studs, parallel-ground washers, 12-point nuts, and the required installation tool