LS Harmonic Balancer Installation Tool Kit 551141 for GM 1997-UP LS1 LS2 LS3 LS4 LS6 LSX LSA LQ4 LQ9 V8 Engines, Crank Pulley Installer with Thrust Bearing and Wrench Flats

Constructed from premium 35CrMo alloy steel with 12.9-grade strength, this harmonic balancer installation tool kit delivers exceptional durability, high load resistance, and long-lasting performance for demanding engine work. The corrosion-resistant finish helps protect against rust and wear during repeated use.The kit includes 1 threaded rod, 1 thrust bearing, 1 heightening nut, and 2 washers, providing everything needed for smooth and efficient harmonic balancer installation. The precision-machined extended threaded rod design allows the balancer to be pressed into place safely and evenly by threading the tool into the crankshaft and tightening the nut, helping prevent crankshaft thread damage caused by hammering or improper installation methods.Compatible with most GM LS and LT series engines from 1997-up, including 3rd, 4th, and 5th generation engines. Fits a wide range of applications such as Camaro, Corvette, Trans Am, GTO, G8, LS trucks, street rods, and LS swap projects. Ideal for harmonic balancer replacement, engine rebuilding, performance upgrades, and professional repair work.Designed for both professional mechanics and DIY users, this heavy-duty installer tool ensures secure engagement, smooth operation, and reliable performance during installation. For best results, applying lubricant during use is recommended.Please note: Not compatible with Gen 2 LT1 5.7L engines (1992–1997). If you have any questions about compatibility or installation, our support team is ready to assist you.

• HEAVY DUTY STEEL CONSTRUCTION: Made from high-strength 35CrMo steel with a Grade 12.9 threaded shaft, this harmonic balancer installation tool is built for durability and long-term performance. Heat-treated construction and black oxide coating provide enhanced strength, wear resistance and rust protection during demanding engine work.
• COMPATIBLE WITH GM LS & LT ENGINES: Designed for GM LS and LT series engines from 1997 to present, including Gen III, IV and V platforms. Compatible with many Chevrolet applications such as Camaro, Corvette, GTO, G8, Trans Am, LS trucks and other LS swap or performance builds.
• SMOOTH & SECURE INSTALLATION:The extended threaded design allows the tool to fully engage the crankshaft for controlled and secure harmonic balancer installation. Upgraded flange nut design helps improve grip and reduce slipping during operation for easier installation and removal.
• EASY TO USE: Simply thread the installation tool into the crankshaft and tighten the nut gradually until the pulley is properly seated. Ideal for harmonic balancer replacement, engine rebuilds, LS swaps and balancer upgrades. Lubricating oil is recommended for smoother operation.
• COMPLETE INSTALLATION KIT: Package includes 1 threaded stud, 2 washers, 1 thrust bearing and 1 flange nut. A practical crank pulley installation tool kit designed for professional mechanics, automotive repair and performance engine applications.