This ARP M10 x 1.25in x 5in stud is designed to meet the rigorous demands of high-performance automotive systems. Engineered for exceptional tensile strength and durability, this single replacement stud provides a reliable fastening solution for custom builds and critical engine or chassis components where standard hardware cannot match the required tolerances.

• Brand: ARP
• Thread Diameter: M10
• Specified Dimension: 1.25in
• Overall Length: 5in
• Quantity: One (1) Stud

This single ARP M10 x 1.25 stud is engineered for high-stress applications requiring superior clamping force and long-term reliability. Forged from ARP 2000 high-strength alloy, this fastener is designed to withstand extreme loads that would compromise standard Grade 8 or original equipment hardware. It is an ideal solution for performance engine builds and specialized drivetrain assemblies where precision and material integrity are non-negotiable.

The integrated guide nose (bullet nose) facilitates precise alignment during the initial threading process, helping to protect against cross-threading in deep blocks or blind holes. This ensures a clean installation even in tight clearances or difficult-to-reach areas.

• Thread Pitch: M10 x 1.25
• Material: ARP 2000 Alloy
• Fastener Style: Stud with Guide Nose (Bullet Tip)
• Quantity: One (1) Stud

This high-strength ARP M10 x 1.5 stud features a broached end, allowing for precise installation using an Allen wrench in tight or recessed locations where traditional sockets cannot reach. Engineered for superior thread engagement and reliability, this fastener is ideal for custom automotive applications or replacing worn hardware in high-stress environments.

• Thread Size: M10 x 1.5
• Overall Length: 1.025 in
• Drive Type: Broached (Internal Hex) for easy installation
• Material: High-strength alloy steel
• Quantity: One (1) stud

This ARP Custom Age 625+ fastener nut is engineered for high-load applications where extreme tensile strength and fatigue resistance are required. As part of ARP's premier fastener line, the Custom Age 625+ super-alloy provides significantly higher strength than standard ARP2000 or chrome moly, making it the ideal choice for critical engine, drivetrain, or chassis assemblies that undergo intense thermal and mechanical stress.

• Brand: ARP
• Series: Custom Age 625+
• Thread Size: M10 x 1.25
• Outer Diameter: M16
• Wrenching Style: 12-Point
• Quantity: Sold individually (One Nut)

The 12-point design allows for a higher torque application and better socket engagement in tight clearances, while the M16 O.D. ensures compatibility where space is at a premium. This precision-machined nut serves as a direct replacement for worn or damaged fasteners in high-performance racing and heavy-duty builds.

This ARP broached stud provides a robust fastening solution for high-performance automotive assemblies where precise clamping and thread protection are required. By utilizing a stud instead of a standard bolt, you significantly reduce wear on internal component threads during repeated assembly and disassembly. The broached design features a hex-recess at the tip, allowing for easy installation and positive seating using a standard hex key.

• Fastener Type: Broached Stud
• Thread Diameter: M10
• Thread Pitch: 1.25 / 1.50
• Overall Length: 4.50 inches
• Drive Type: Internal Hex (Broached)

Engineered for consistency and strength, ARP fasteners ensure more accurate torque loading by removing the friction caused by a bolt head spinning against the mounting surface. This stud is an essential choice for custom builds, manifold mounting, or specialized drivetrain repairs requiring M10 hardware with these specific thread dimensions.

This single ARP M10 stud provides a high-strength fastening solution for custom automotive applications and specialized engine builds. Measuring 5.90 inches in total length, this stud features dual thread pitches of 1.5mm and 1.25mm to accommodate specific block and component requirements.

Engineered for superior reliability, these studs are manufactured to ARP's exacting standards for thread accuracy and strength. Using a stud instead of a bolt helps to ensure more consistent clamping loads and protects internal threads in aluminum or cast iron components during repeated assembly and disassembly.

• Brand: ARP
• Thread Diameter: M10
• Overall Length: 5.90in
• End 1 Thread Pitch: 1.5mm
• End 2 Thread Pitch: 1.25mm
• Quantity: One (1) Stud

This single ARP replacement stud is engineered for users who need to replace an individual component within the ARP 218-4702 fastener kit. Manufactured to the same exacting standards as the full kit, this stud ensures you maintain the uniform clamping force and high-tensile strength necessary for critical engine assemblies.

• Brand: ARP
• Part Type: Replacement Fastener
• Compatibility: Specifically for ARP Kit 218-4702
• Quantity: Single (1) Stud
• Material: High-strength chromoly steel
• Finish: Black oxide for corrosion resistance

This ARP M10 broached stud provides a reliable and precise fastening solution for custom automotive assemblies. Featuring a total length of 4.60 inches and dual thread pitches of 1.25 and 1.50, it is designed to meet strict tolerances. The broached tip allows for straightforward installation and removal using a hex key, which is particularly beneficial in tight engine bays or recessed mounting points where external gripping is difficult.

• Thread Size: M10
• Total Length: 4.60 inches
• Thread Pitch: 1.25 / 1.50
• Broached end for easy hex-drive installation
• Manufacturer: ARP

Maintain the integrity of your engine's assembly with this genuine ARP replacement nut, specifically designed for use with the ARP 204-4103 head stud kit. Whether you are refreshing your cylinder head or replacing a misplaced fastener during a build, this nut ensures the precise clamping force and thread engagement required for high-performance applications.

• Direct replacement nut for ARP head stud kit part number 204-4103
• Precision-machined threads for accurate torque loading and consistent preload
• Engineered to handle the extreme tensile loads and heat cycles of performance engines
• 12-point head design for maximum tool contact and clearance
• Sold individually; verify kit requirements before installation

This ARP M10 main stud provides the superior clamping force and structural integrity required for high-performance engine bottom ends. By replacing factory main bolts with high-strength studs, you ensure more accurate torque loading during assembly and help prevent main cap walk under high RPM or heavy load conditions. The broached end allows the stud to be easily installed or removed using an internal hex wrench, ensuring a precise fit into the block.

• Thread Diameter: M10
• Overall Length: 4.125 inches
• Thread Pitch: 1.25 / 1.50
• Features: Broached end for easy installation
• Quantity: Sold individually (one stud)

This ARP Head Stud Kit provides the superior clamping force necessary for high-performance Toyota G16E engines. Designed to replace factory stretch-to-yield (TTY) fasteners, these studs ensure consistent loading and prevent cylinder head lift or gasket failure under high boost and increased cylinder pressures.

Each stud is manufactured from premium alloy, heat-treated for maximum tensile strength, and precision thread-rolled after heat treatment to optimize fatigue resistance. This kit is an essential upgrade for any G16E build requiring reliable engine sealing during aggressive use.

• Fits Toyota G16E engines
• Direct replacement for factory cylinder head bolts
• Prevents head gasket failure by providing increased clamping force
• Heat-treated and thread-rolled for maximum strength and durability
• Includes premium 12-point nuts and parallel-ground washers
• Includes ARP Ultra-Torque assembly lubricant for precise torque application

This ARP replacement main stud is a genuine component designed for use with the ARP 202-5802 main stud kit. Manufactured from high-strength 8740 chrome moly steel and heat-treated to a tensile strength of 200,000 psi, this fastener provides the reliable clamping force required to prevent main cap walk and ensure crankshaft alignment in high-load environments.

• Replacement fastener specifically for ARP main stud kit 202-5802
• Material: 8740 Chrome Moly steel alloy
• Tensile Strength: 200,000 psi rating
• Finish: Black oxide coating for long-term corrosion resistance
• Thread Type: Precision J-form rolled threads for enhanced fatigue life
• Sold as an individual replacement unit

Secure your cylinder head against extreme combustion pressures with the ARP Custom Age 625+ Head Stud Kit, engineered specifically for the Ford 2.3L EcoBoost engine. For builds pushing high boost levels or high-compression ratios, factory torque-to-yield (TTY) head bolts often reach their elastic limit, leading to head lift and head gasket failure. This CA625+ kit provides the superior clamping force necessary to maintain a perfect seal under the most demanding conditions.

Custom Age 625+ is a super-alloy with a typical tensile strength of 260,000 to 280,000 psi, offering significantly higher fatigue life and toughness compared to standard ARP2000 or 8740 fasteners. These studs are thread-rolled after heat-treat for maximum fatigue strength and are centerless ground to ensure perfect concentricity. The 12-point nut design allows for easier socket access in the tight confines of the EcoBoost cylinder head.

• Fits Ford 2.3L EcoBoost engines
• Material: Custom Age 625+ Super-Alloy
• Tensile Strength: 260,000 - 280,000 psi
• Fastener Style: 12-Point Nuts
• Includes: Precision-machined head studs, 12pt nuts, hardened parallel-ground washers, and ARP Ultra-Torque assembly lubricant

This ARP double-ended stud is engineered for high-performance applications requiring precise clamping force and exceptional fastener strength. Manufactured from premium heat-treated alloys, this stud provides more accurate torque loading and easier component alignment during assembly compared to standard bolts.

• Thread A: M9-1.0
• Thread B: M9-1.25
• Overall Length (OAL): 4.060 inches
• Fastener Style: Double-ended stud
• Manufacturer: ARP

Each ARP fastener is thread-rolled after heat treatment to ensure maximum fatigue life and resistance to stretching under extreme loads. This specialized M9 stud is ideal for custom engine builds or replacing specific hardware where distinct metric thread pitches are required on a single shank.

Maintain critical cylinder head sealing under extreme combustion pressures with the ARP Custom Aged 625+ Head Stud Kit. Designed specifically for Chrysler 5.7L and 6.1L Hemi engines, these fasteners provide significantly higher clamping force than standard OE head bolts or traditional 8740 chromoly studs. This kit is the essential upgrade for high-boost, high-compression, or nitrous-fed builds where head gasket integrity is a primary concern.

Each stud is manufactured from ARP's proprietary Custom Aged 625+ super-alloy, heat-treated to achieve a typical tensile strength between 260,000 and 280,000 psi. The threads are rolled after heat-treatment, resulting in ten times the fatigue strength of studs threaded before heat-treat. This precision manufacturing ensures consistent torque loading and prevents the cylinder head from lifting under load.

• Fits Chrysler 5.7L and 6.1L Hemi engines
• Material: Custom Aged 625+ super-alloy
• Tensile Strength: 260,000 - 280,000 psi
• Includes high-strength 12-point nuts and parallel-ground washers
• Threads rolled after heat-treat for maximum fatigue resistance
• Centerless ground for perfect concentricity

This ARP broached stud is engineered for precision and reliability in critical automotive assemblies. With an M10 diameter and a 1.25 thread pitch, this 4.50-inch fastener provides the consistent clamping force required for high-performance applications.

The broached design features an internal hex at the tip, allowing for easy installation and removal using an Allen wrench. This eliminates the need for double-nutting during the seating process, ensuring you can reach the correct depth without risking thread damage. Like all ARP hardware, this stud is manufactured to exacting tolerances to handle the stresses of engine or chassis mounting.

• Manufacturer: ARP
• Thread Size: M10 x 1.25
• Overall Length: 4.50 inches
• Design: Broached end for internal hex tool engagement

ARP 12-point fasteners are engineered for high-performance applications where space is limited and fastener strength is critical. These 3/8"-16 bolts feature a 1.000" under-head length and a compact 12-point head with a 7/16" wrenching diameter, allowing for high torque loads in tight clearances that standard hex heads cannot accommodate.

Manufactured to ARP's exacting tolerances, these bolts provide significantly higher tensile strength than standard Grade 8 hardware. The durable black oxide finish offers a professional appearance and essential corrosion resistance for engine, chassis, and accessory mounting applications where precision and reliability are required.

• Thread Size: 3/8"-16
• Under-Head Length: 1.000"
• Head Style: 12-Point
• Wrenching Size: 7/16"
• Finish: Black Oxide
• Quantity: 5 Bolts per package

Precision engine assembly requires specialized tools to prevent damage to critical components. This ARP Tapered Piston Ring Compressor is engineered to simplify the installation of pistons into the cylinder block. CNC-machined from 6061-T6 billet aluminum, this tool features a true radius taper design that compresses rings evenly as the piston slides through, eliminating the risk of ring breakage or snagging during the build.

• Bore Size: 86.25mm
• Material: 6061-T6 Billet Aluminum construction
• Finish: Hard-anodized for a smooth, low-friction surface and long-term durability
• Design: Tapered bore for seamless, precise ring compression
• Application: Essential for professional engine builders and DIY enthusiasts

Ensure superior cylinder head sealing on your BMW S58 engine with this ARP 12-point head stud kit. Designed for high-performance and high-boost applications, these studs provide significantly more consistent clamping force than factory one-time-use stretch bolts, which is critical for preventing head gasket failure.

The kit features an undercut (U/C) stud design, which allows the fastener to stretch more uniformly for a more accurate torque preload. The included 12-point nuts offer a compact footprint for easier installation in the tight clearances of the S58 cylinder head while providing maximum socket engagement.

• Fits BMW S58 3.0L Twin-Turbo Inline-6 engines
• Fastener Style: Studs with 12-point nuts
• Design: Under Cut (U/C) for uniform preload and clamping
• Includes complete set of studs, nuts, and washers
• High-strength replacement for factory cylinder head bolts

Ensure maximum cylinder head clamping force on high-output BMW B58 engines with the ARP Custom Age 625+ Head Stud Kit. Designed for high-boost applications where factory bolts or standard fasteners may stretch, these studs are a critical upgrade to prevent head gasket failure and head lift during extreme cylinder pressure events.

The Custom Age 625+ (CA625+) super-alloy material provides a typical tensile strength of 260,000 to 280,000 psi, offering a significant margin of safety over standard ARP2000 and OE hardware. Each stud is centerless ground to ensure perfect concentricity and heat-treated before thread rolling to maximize fatigue strength and reliability in high-performance builds. This kit is the industry standard for big-turbo B58 setups found in modern BMW and Supra platforms.

• Fits BMW B58 3.0L Inline-6 Turbo engines
• Material: Custom Age 625+ Super-Alloy
• Tensile Strength: 260,000 – 280,000 psi
• Fastener Type: 12-point nuts for precise torque application
• Precision-ground parallel washers ensure even load distribution
• Includes ARP Ultra-Torque Fastener Assembly Lubricant

This ARP replacement stud provides the high-tensile strength and precision required for critical automotive assemblies. The broached tip allows for easy installation and removal using an internal hex drive, ensuring the stud is properly seated in the housing before torque is applied.

Engineered for durability and precise tolerances, this fastener maintains the clamping force and reliability that professional engine builders expect from ARP hardware. It serves as a direct replacement for worn or misplaced studs in specialized ARP fastener kits.

• Brand: ARP
• Part Type: Broached Stud
• Diameter/Thread: 3/8
• Overall Length (OAL): 1.500 inches
• Drive Feature: Broached (Internal Hex)
• Application: Universal Replacement Fastener

ARP Ultra-Torque Fastener Assembly Lubricant is specifically formulated to provide consistent clamping force and prevent seizing or galling during engine assembly. Unlike standard motor oils or generic lubricants that can vary significantly in friction coefficients, Ultra-Torque ensures that the torque applied to your fasteners results in accurate, repeatable preload for critical components like head studs, main bolts, and rod bolts.

Applying this lubricant to the threads and the underside of the fastener head or nut helps achieve a smooth, uniform pull on the hardware. This 1.69 oz squeeze tube is sized perfectly for individual engine builds or a technician's toolbox, providing reliable protection against thread damage on high-tensile hardware.

• Ensures consistent fastener preload and clamping force
• Prevents galling and seizing on high-strength fasteners
• Optimized for use on head studs, main bolts, and connecting rod bolts
• Stable under high pressure and temperature
• Size: 1.69 oz (approx. 50ml) squeeze tube

Fits BMW B48 4-cylinder engines.

This ARP head stud kit is an essential upgrade for any BMW B48 engine, particularly those running increased boost pressures or high-compression setups. Unlike factory Torque-To-Yield (TTY) bolts that are prone to stretching and must be replaced every time the head is removed, these ARP2000 studs provide significantly higher clamping force to maintain a reliable head gasket seal under extreme cylinder pressures.

The undercut design allows the entire stud to stretch more evenly, effectively compensating for the thermal expansion of the aluminum head and block. Manufactured from premium ARP2000 alloy steel, these fasteners are rated to 220,000 psi tensile strength, ensuring the cylinder head remains seated even under heavy load.

• Engine Application: BMW B48 4-Cylinder
• Material: ARP2000 Alloy Steel (220,000 psi)
• Fastener Style: 12-Point Nuts
• Design: Undercut studs for uniform load distribution
• Hardware Included: Head studs, 12-point nuts, parallel-ground washers, and ARP Ultra-Torque Fastener Assembly Lubricant

Fits 1989-1994 Porsche 964 models.

Ensure the structural integrity and sealing of your flat-six engine with the ARP Crankcase Bolt Kit. During a high-performance rebuild, original equipment hardware often fails to provide the consistent clamping force necessary to keep case halves perfectly aligned under high thermal and mechanical stress. These ARP fasteners are engineered to exceed OE specifications, providing the superior tensile strength required to prevent case shifting and the chronic oil leaks common in air-cooled Porsche engines.

This kit replaces the factory fasteners with high-strength hardware designed for precision torque loading. Whether you are performing a standard top-end refresh or building a high-compression track engine, these fasteners provide the reliability needed to maintain main bearing bore roundness and case-half seal integrity.

• Specifically engineered for the Porsche 964 engine architecture
• Delivers superior clamping force to prevent case movement
• High-strength construction for maximum reliability under extreme conditions
• Essential component for any professional engine overhaul or performance build

Fits Audi RS3 and TT-RS models equipped with the 2.5L DAZA and DWNA engines.

This ARP Head Stud Kit is a critical upgrade for 2.5L TFSI owners pushing the limits of their platform. In high-performance applications where increased boost pressures are common, factory torque-to-yield (TTY) bolts can stretch, potentially leading to head gasket failure or cylinder head lift. These studs provide a significantly more consistent and higher clamping force than OE hardware to keep the cylinder head securely mated to the engine block under extreme cylinder pressures.

• Engineered for Audi 2.5L DAZA and DWNA engine codes
• Replaces factory one-time-use torque-to-yield head bolts
• Provides superior clamping force for high-boost and big-turbo applications
• Facilitates easier cylinder head alignment and installation
• Complete kit includes heavy-duty studs, parallel-ground washers, and 12-point nuts

Ensure reliable cylinder head sealing on your high-performance BMW S63 4.4L V8 engine with this premium ARP head stud kit. Factory head bolts are engineered as torque-to-yield fasteners, meaning they stretch during installation and cannot be safely reused. This ARP2000 kit replaces those OE bolts with high-strength studs that provide superior clamping force and more accurate torque readings, which is essential for prevents head gasket lifting in high-boost or modified applications.

Each stud is manufactured from ARP2000 alloy, centerless ground for perfect concentricity and heat-treated to a tensile strength of approximately 220,000 psi. These studs feature an undercut design that equalizes the stretch of the fastener, providing a more consistent clamp load over the entire length of the stud. The threads are rolled after heat treatment, resulting in significantly higher fatigue strength compared to studs with cut threads.

• Fits BMW S63 4.4L twin-turbo V8 engines.
• Forged from ARP2000 alloy with 220,000 psi tensile strength.
• Undercut shank design for improved fatigue life and uniform clamping.
• Precision J-form threads rolled after heat treatment for maximum durability.
• Includes 12-point nuts with a polished finish for easy tool engagement in tight head castings.
• Complete with hardened, parallel-ground washers and ARP Ultra-Torque fastener assembly lubricant.

ARP Teflon Sealer provides a professional-grade, leak-proof seal for engine fasteners that penetrate water jackets, oil galleries, or other pressurized fluid passages. Formulated with PTFE (Teflon), this high-performance thread sealant prevents fluid migration along the threads while providing lubricity for accurate torque readings and preventing thread galling during installation.

• Brand: ARP
• Product Type: Thread Sealant with PTFE
• Container Size: 1.69 oz (50ml)
• Application: Fasteners entering fluid-filled engine passages
• Prevents leaks and resists chemical degradation
• Ensures smooth assembly and easier disassembly

Fits BMW S63 engines.

Protect your high-performance BMW S63 engine from head lift and gasket failure with the ARP Custom Age 625+ head stud kit. These studs are engineered to replace factory stretch bolts, providing the superior clamping force required for high-boost twin-turbo applications. The Custom Age 625+ super-alloy offers a typical tensile strength of 260,000 psi, significantly outperforming standard chromoly fasteners.

• Manufactured from Custom Age 625+ super-alloy for extreme tensile strength and fatigue resistance
• Undercut (U/C) shank design allows for more consistent clamping loads during thermal expansion
• 12-point nuts allow for higher torque application and easier access in tight engine bays
• Threads are rolled after heat treatment for 10x better fatigue life than standard fasteners
• Centerless ground to ensure perfect concentricity
• Includes heavy-duty washers, 12-point nuts, and ARP Ultra-Torque fastener assembly lubricant

Fits 2015-2017 Ford Shelby GT350 (5.2L).

Ensure your 5.2L Voodoo engine's cylinder heads remain securely seated under high-load conditions with this ARP Head Stud Kit. Unlike standard factory torque-to-yield head bolts that stretch and twist during installation, these studs provide a more accurate torque reading and uniform clamping force across the head gasket surface. This design helps prevent head gasket failure and cylinder head lifting, making it a critical upgrade for high-performance builds and track-driven applications.

• Engineered specifically for the Ford 5.2L Voodoo engine
• Provides superior clamping force and consistent load distribution compared to OE bolts
• Simplifies engine assembly by acting as a guide for cylinder head alignment
• Premium fastener construction for maximum tensile strength and durability

ARP Ultra-Torque Fastener Assembly Lubricant is engineered to provide the most consistent and accurate bolt preload readings in the industry. Developed specifically to overcome the friction variables that lead to uneven clamping force, this lubricant ensures you reach within 5% of your target preload on the very first pull. This eliminates the need for repetitive cycle-torquing on critical fasteners like head studs, main bolts, and connecting rod bolts.

• Prevents seizing and galling on all threaded fasteners during high-load installation
• Contains premium rust and corrosion inhibitors to protect threads over time
• Metal-free formula is safe for use on stainless steel and titanium alloys
• Effective lubricant range prevents friction-induced preload scatter
• Convenient 10 oz. bottle features an integrated brush top for precise, mess-free application