Schley Tools - GM HARMONIC DAMPER HOLDING TOOL

The Schley Tools 62800 is designed for secure and efficient removal and installation of harmonic balancers on GM Gen III and IV engines. It locks the damper firmly in place to prevent rotation, allowing technicians to apply up to 240 lb-ft of torque without risk of damage—essential when loosening or tightening crank bolts on LS-based engines. Built tough for repeated use, it’s ideal for both professional and DIY engine work.

• Application: GM LS1 Gen III 5.7L V8 (1997–2004)
• Compatibility: Harmonic balancers on Gen III and IV engines
• Torque Support: Up to 240 lb-ft (refer to OEM specs)
• Function: Holds damper during crank bolt installation/removal

• Exact Fit: Engineered for GM Gen III & IV LS engines
• Secure Hold: Locks harmonic damper in place to prevent slippage
• High Torque Capability: Enables application of factory torque specs (up to 240 lb-ft)
• Heavy-Duty Build: Made from premium-grade materials for durability
• Efficiency Boost: Simplifies a high-torque, high-resistance task