Ensure a seamless engine build with the ARP 4.110in Tapered Piston Ring Compressor. Designed for professional engine builders and performance enthusiasts, this precision tool eliminates the risk of broken rings or marred piston skirts during short block assembly. Unlike generic adjustable compressors, this fixed-bore tool provides a smooth, gradual taper that guides the ring pack into the cylinder with perfect alignment.

Each compressor is CNC-machined from premium 6061-T6 billet aluminum and finished with a hard-anodized coating. This construction ensures the tool maintains its strict tolerances and resists wear across multiple high-performance builds. The true-bore design is specifically sized for 4.110-inch bores, providing the exact compression needed for standard and file-fit rings.

• Bore Size: 4.110in
• Material: 6061-T6 Billet Aluminum
• Finish: Hard-Anodized Black
• Design: Fixed Tapered Bore for precise ring compression
• Manufacturer Part Number: 900-1100

Ensure precise fastener tension during engine assembly with the ARP Billet Style Rod Bolt Stretch Gauge. This specialized tool measures the actual stretch of connecting rod bolts, providing a far more accurate indication of bolt preload than torque wrench readings alone. Proper bolt stretch is critical for achieving optimal clamping force and preventing fastener failure in high-performance and race engine applications.

The billet-style construction signifies a precision-machined instrument designed for durability and consistent readings. It allows engine builders to accurately tension connecting rod bolts to the manufacturer's specified stretch, which is essential for maximizing engine reliability and longevity.

• Achieve exact connecting rod bolt preload
• More accurate than torque-only methods
• Precision billet-style construction
• Manufacturer Part Number: 100-9942

Fits 2002-2008 Mini Cooper S and JCW (R52/R53).

The ALTA S/C Pulley Removal Tool is an essential specialty tool for first-generation Mini Cooper S owners looking to upgrade their supercharger drive. The factory pulley is press-fitted onto the Eaton M45 supercharger shaft with high tension, making it impossible to remove safely without a dedicated puller. This tool is engineered to provide a secure, even grip on the pulley, allowing for a smooth extraction that prevents damage to the supercharger snout, bearings, or the shaft itself.

• Engineered specifically for the 2002-2008 Mini Cooper S supercharger system
• Safe removal of the factory press-fit pulley without side-loading the supercharger shaft
• High-strength construction designed to withstand the torque required for extraction
• Compatible with both the R53 Hatchback and R52 Convertible models
• Manufacturer Part Number: AMP-ENG-208BK

Fits select 1985-2013 Toyota (Corolla, Matrix, MR2, Celica, Paseo, Tercel), Lotus (Elise, Exige), Pontiac Vibe, Geo Prizm, and Chevrolet Nova.

The ACT ATK73 alignment tool is a critical component for a successful clutch installation. It is specifically designed to correctly align the clutch disc with the pilot bearing before the pressure plate is torqued down. This precision centering ensures the transmission input shaft slides into the clutch disc splines without resistance, preventing damage to the disc or transmission during assembly.

• Facilitates accurate installation of ACT pressure plates and clutch discs
• Ensures proper centering of the clutch disc with the pilot bearing
• Allows for a smooth, trouble-free transmission mating process
• Replaces manufacturer part number: ATK73
• Backed by a one-year manufacturer warranty

Fits 2002-2008 Mini Cooper S.

The ACT ATGM06 clutch alignment tool is a critical component for any manual transmission service or clutch replacement. This tool is designed to accurately center the clutch disc with the pilot bearing while you bolt the pressure plate to the flywheel. By maintaining precise concentricity, the transmission input shaft can slide into the splines and pilot bearing smoothly, preventing damage to the disc or input shaft during installation.

• Manufacturer Part Number: ATGM06
• Function: Correctly aligns clutch disc splines with the pilot bearing
• Benefit: Simplifies transmission mating and prevents installation-related disc damage
• Application: Specific to Mini Cooper S drivetrain configurations
• Warranty: Backed by a one-year manufacturer warranty

The ACT ATGM026 alignment tool is an essential component for any clutch replacement, ensuring the clutch disc is perfectly centered with the pilot bearing before the pressure plate is torqued down. By mimicking the transmission input shaft, this tool prevents disc misalignment that can lead to difficult transmission installation or damage to the input shaft splines.

• Fits select 1970-2015 Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models, including Corvette, Camaro, Firebird, and GTO.
• Specifically designed to facilitate the installation of ACT pressure plates and clutch kits.
• Correctly aligns the clutch disc with the pilot bearing for smooth transmission input shaft mating.
• Manufacturer Part Number: ATGM026

Precision alignment is critical for preventing drivetrain vibration and ensuring the longevity of your new clutch components. This tool is a direct replacement for lost or damaged alignment tools included in ACT clutch kits.

Fits select 1955-1995 Buick, Chevrolet, GMC, Oldsmobile, and Pontiac vehicles. The ACT ATGM010 alignment tool is a critical component for any clutch service, designed to properly center the clutch disc to the pilot bearing before the pressure plate is torqued down. By ensuring precise concentricity, this tool eliminates the struggle of mating the transmission input shaft to the engine, preventing accidental damage to the disc hubs or input shaft splines during installation.

• Ensures perfect alignment between the clutch disc and pilot bearing
• Facilitates smooth transmission input shaft insertion
• Prevents hub damage during heavy transmission installation
• Specifically designed for select GM applications from 1955 to 1995
• Manufacturer Part Number: ATGM010
• Backed by a one-year manufacturer warranty

Ensure a precise and hassle-free transmission installation with the ACT ATCP9 Clutch Alignment Tool. This essential service tool is engineered to properly center the clutch disc with the pilot bearing, ensuring the transmission input shaft slides into place without binding or damaging the hub. Designed specifically for use during the installation of ACT pressure plates, it provides the accuracy required for professional drivetrain assembly.

• Precision Alignment: Corrects disc positioning to allow the transmission input shaft to mate smoothly with the pilot bearing.
• Component Protection: Prevents uneven loading or damage to the clutch disc and splines during the heavy lifting of a transmission install.
• Durable Construction: High-quality molded material designed for repeated use in a professional shop environment.
• Manufacturer Part Number: ATCP9

Fits select 1966-2018 Jeep models including CJ3, CJ5, CJ6, CJ7, Cherokee, Comanche, Grand Cherokee, Wrangler, and Wrangler JK.

Fits select 1995-2006 Chrysler, Dodge, Eagle, and Mitsubishi models including PT Cruiser, Neon, Eclipse, and Talon.

The ACT ATCP2 clutch alignment tool is an essential technician's tool for ensuring a smooth transmission installation. This tool correctly aligns the clutch disc with the pilot bearing or crankshaft bushing while you bolt the pressure plate to the flywheel. By centering the disc precisely, it allows the transmission input shaft to slide into the clutch hub splines without binding or forced entry, which can lead to damaged disc hubs or bent splines.

• Manufacturer Part Number: ATCP2
• Reliable Alignment: Correctly centers the disc for effortless transmission mating
• Durability: Rugged construction designed for multiple uses in a shop environment
• Fitment Specific: Sized for the unique spline counts and pilot diameters found on select Chrysler and DSM-era platforms

Vehicle Fitment

The ACT AT96 is a precision clutch alignment tool designed to facilitate the smooth installation of ACT pressure plates and clutch kits. By correctly centering the clutch disc with the pilot bearing, this tool ensures the transmission input shaft can be easily mated to the engine without binding or damaging the disc splines.

Fits select 1990-2024 Audi, Mini, and Volkswagen models, including Beetle, Corrado, Golf, GTI, Jetta, Passat, and Cooper variants (1.8T).

• Ensures precise alignment between the clutch disc and the pilot bearing
• Required for professional installation and to prevent input shaft interference
• Durable construction for reliable repeated use in the shop
• Engineered specifically for compatibility with ACT pressure plate assemblies
• Manufacturer Part Number: AT96
• Warranty: One-year limited manufacturer warranty

Ensure a smooth transmission installation with the ACT Clutch Alignment Tool (AT90). This tool is designed to facilitate the proper installation of an ACT pressure plate by accurately centering the clutch disc with the pilot bearing. By maintaining this critical alignment, the transmission input shaft can slide into the splines without binding or damage during the mating process.

• Prevents clutch disc misalignment during pressure plate torqueing
• Simplifies transmission installation by pre-aligning the input shaft path
• Constructed for precise fitment with specific pilot bearing and disc spline dimensions
• Manufacturer Part Number: AT90
• Includes a one-year manufacturer warranty

Fits select 1990-2025 Subaru, Saab, Scion, and Toyota models (including BRZ, WRX, STI, Impreza, Forester, and Legacy).

Fits select 1992-2001 Acura Integra, Honda Civic Si, Civic del Sol VTEC, and Honda CR-V.

The ACT AT88 Clutch Alignment Tool is an essential component for any manual transmission service or clutch replacement. This tool is designed to accurately center the clutch disc with the pilot bearing, ensuring the transmission input shaft can be easily and safely installed without binding or damaging the disc splines. Built to meet the high standards of ACT (Advanced Clutch Technology), this tool is a necessary addition to your toolbox for a professional-grade installation.

• Manufacturer Part Number: AT88
• Primary Function: Correctly aligns the clutch disc with the pilot bearing to facilitate transmission mating.
• Durability: Engineered for precision fitment and repeated use during drivetrain assembly.
• Installation: Simplifies the process of centering the pressure plate and disc before final torquing.

Fits select 1991-2003 BMW 3-Series, 5-Series, M3, and Z3 models.

The ACT AT83 alignment tool is an essential service component designed to facilitate the installation of a pressure plate. By precisely centering the clutch disc with the pilot bearing, this tool ensures the transmission input shaft slides into place during final assembly without binding or damaging the disc splines. This provides a professional-grade setup that mimics the actual input shaft for an accurate, hassle-free installation.

• Manufacturer Part Number: AT83
• Correctly aligns the clutch disc with the pilot bearing for easy transmission mating
• Prevents damage to the clutch disc during engine and transmission assembly
• Essential for ensuring the pressure plate is torqued down with the disc perfectly centered
• Backed by the ACT one-year manufacturer warranty

Fits select 2002-2026 Honda and Acura models, including Civic, Accord, RSX, TSX, ILX, and Integra.

The ACT AT78 Clutch Alignment Tool is an essential component for any manual transmission service or clutch replacement. It facilitates the installation of an ACT pressure plate by ensuring the clutch disc is perfectly centered with the pilot bearing. This precision alignment allows the transmission input shaft to slide into place smoothly, preventing spline damage or binding during assembly.

Built to replicate the exact dimensions of the vehicle's input shaft, this tool is critical for maintaining concentricity while the pressure plate is torqued to the flywheel.

• Manufacturer Part Number: AT78
• Function: Aligns clutch disc with pilot bearing and transmission input shaft
• Compatibility: Engineered for specific spline counts and pilot diameters found in Honda/Acura applications
• Benefit: Simplifies transmission mating and protects internal clutch components

Fits select 2000-2026 Acura CL, Integra, TL and Honda Accord, Civic, and S2000.

The ACT AT61 clutch alignment tool is an essential component for any clutch replacement or transmission service. By precisely centering the clutch disc with the pilot bearing, this tool ensures the transmission input shaft slides into place without binding or damaging the disc splines during installation. It is specifically designed to facilitate the mounting of the pressure plate while maintaining perfect component geometry.

• Prevents disc damage by ensuring proper input shaft alignment
• Simplifies transmission mating and pressure plate installation
• Constructed for repeatable shop or garage use
• Manufacturer Part Number: AT61

Fits select 1990-2002 Acura CL, Honda Accord, and Honda Prelude.

The ACT AT58 clutch alignment tool is an essential component for ensuring a smooth and accurate transmission installation. This tool is designed to precisely center the clutch disc with the pilot bearing, allowing the transmission input shaft to slide into place without binding or damaging the internal splines of the disc.

• Ensures perfect alignment between the clutch disc and pilot bearing
• Facilitates easier mating of the transmission to the engine block
• Prevents disc damage during heavy transmission installation
• Manufacturer Part Number: AT58
• Backed by a one-year manufacturer warranty

Fits select 1997-2009 Audi A4, A6, Allroad, RS4, S4, and 1998-2005 Volkswagen Passat.

The ACT AT36 Clutch Alignment Tool is a critical component for ensuring a smooth transmission installation. This tool is designed to center the clutch disc perfectly with the pilot bearing while you bolt down the pressure plate, preventing the input shaft from binding during assembly. Using the AT36 ensures that the splines are properly indexed, reducing the risk of damaging the clutch hub or the transmission input shaft.

• Facilitates accurate installation of ACT pressure plates and clutch discs
• Ensures precise alignment between the clutch disc and pilot bearing
• Speeds up transmission mating and reduces installation frustration
• Manufacturer Part Number: AT36
• Includes ACT's one-year limited warranty

Fits select 2008-2014 Dodge Caliber and Hyundai Genesis Coupe (2.0T / 3.8L).

The ACT AT23 clutch alignment tool is a critical component for ensuring a smooth transmission installation. This tool facilitates the precise alignment of the clutch disc with the pilot bearing before the pressure plate is bolted down. By centering the disc correctly, it allows the transmission input shaft to slide into the clutch splines without binding or damage, saving time and preventing common installation errors.

• Ensures perfect centering of the clutch disc with the pilot bearing
• Facilitates easy mating of the transmission input shaft
• Molded for specific spline count and diameter for a precise fit
• Manufacturer Part Number: AT23
• Backed by a one-year limited manufacturer warranty

Fits select 1976-2017 Chrysler, Dodge, Eagle, Ford, Honda, Hyundai, Kia, Mazda, Mercury, Mitsubishi, and Plymouth models.

The ACT AT20 Clutch Alignment Tool is designed to simplify the transmission installation process by ensuring the clutch disc is perfectly centered relative to the pilot bearing or bushing. By maintaining this alignment before the pressure plate is torqued, the transmission input shaft can slide into the disc splines and pilot bearing smoothly, preventing common installation errors and hub damage during engine-to-transmission mating.

• Precisely aligns the clutch disc with the pilot bearing or bushing
• Facilitates a smooth and effortless transmission input shaft entry
• Prevents damage to the clutch disc hub and splines during assembly
• Engineered for professional results when installing ACT pressure plates and discs
• Manufacturer Part Number: AT20
• Backed by a one-year manufacturer warranty

Fits 2013-2018 Ford Focus ST and RS.

The ACT AT130 clutch alignment tool is a precision-molded component designed to facilitate the installation of an ACT pressure plate. By correctly aligning the clutch disc spline with the pilot bearing, this tool ensures the transmission input shaft can be mated to the engine without binding or misalignment. Using a dedicated alignment tool prevents damage to the clutch disc hub during the installation process.

• Ensures precise centering of the clutch disc with the pilot bearing
• Simplifies the installation of the transmission input shaft
• Specifically designed for use with ACT pressure plates
• Manufacturer Part Number: AT130
• Back by a one-year manufacturer warranty

Fits select 2000-2024 Audi A3 and TT Quattro, and Volkswagen Beetle, CC, Eos, Golf, GTI, Jetta, Passat, and R32 models (2.0T).

The ACT AT126 clutch alignment tool is a critical component for ensuring a professional and efficient clutch installation. By correctly aligning the clutch disc with the pilot bearing, this tool allows for seamless engagement with the transmission input shaft, preventing potential damage to the disc or spline during the mating of the engine and gearbox.

Designed specifically to facilitate the installation of ACT pressure plates, this tool is an essential addition to any technician's or DIYer's toolbox when performing clutch service on select Audi and Volkswagen vehicles.

• Manufacturer Part Number: AT126
• Aligns clutch disc to pilot bearing for easy transmission installation
• Specifically designed for use with ACT pressure plate assemblies
• Ensures proper centering to prevent input shaft binding

Fits 2010-2011 Toyota Camry (Base, LE, SE) and 2011-2016 Scion tC Base.

The ACT AT116 is a precision-molded clutch alignment tool essential for the proper installation of your clutch kit. By correctly centering the clutch disc with the pilot bearing, this tool ensures that the transmission input shaft can be mated to the engine without binding or damage. This is a critical step for any technician or DIYer to prevent misalignment issues during the reassembly process.

• Ensures precise alignment between the clutch disc and the pilot bearing
• Facilitates easy installation of the transmission input shaft
• Molded specifically for the spline and pilot diameter requirements of select Toyota and Scion drivetrains
• Manufacturer Part Number: AT116
• Includes ACT's one-year manufacturer warranty