Pro Series GM Gen III/IV LS Harmonic Balancer Damper Bolt Kit

• Fits Gen III/IV LS Engines: Designed for LS harmonic balancer and crankshaft damper applications.

• 35 Chromoly Steel Construction: Provides 190,000 PSI tensile strength for dependable retention.

• 12-Point Head Design: Supports secure installation and easier serviceability.

• Corrosion-Resistant Finish: Black oxide coating and oil finish help resist rust and corrosion.

Upgrade your GM Gen III/IV LS engine with a Pro Series harmonic balancer damper bolt kit engineered for secure crankshaft damper retention and dependable performance. Whether you're installing a new harmonic balancer, replacing factory hardware, or completing an engine rebuild, this LS harmonic balancer bolt kit provides the strength needed for reliable operation in street and performance applications.

Secure Crankshaft Damper Retention
Designed to securely fasten the harmonic balancer to the crankshaft, this LS crankshaft damper bolt helps maintain proper balancer retention during engine operation, reducing the risk of hardware failure in demanding conditions.

High-Strength Performance Hardware
Manufactured from premium materials for durability and long service life, this harmonic balancer retaining bolt is well suited for performance upgrades, engine rebuilds, and service replacement applications.

Engine-Specific LS Fitment
Designed specifically for GM Gen III and Gen IV LS engines, helping ensure proper installation and compatibility with the listed LS harmonic balancer and crankshaft damper applications.

Ideal for Rebuilds & Balancer Replacement
Perfect for harmonic balancer replacement, engine assembly, and maintenance projects where fresh crankshaft damper hardware is recommended. A great choice for LS1, LS2, LS3, LS6, LQ4, LQ9, and other compatible Gen III/IV LS engine builds.

What engines does this harmonic balancer bolt kit fit?
This kit is designed for GM Gen III and Gen IV LS engines, including many 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L applications. It does not fit LS7 engines.

Why replace the harmonic balancer bolt?
Replacing the harmonic balancer bolt helps ensure proper crankshaft damper retention and clamping force during balancer installation, engine repairs, and rebuilds.

Is this bolt suitable for performance applications?
Yes. The bolt is manufactured from heat-treated 35 chromoly steel with a minimum tensile strength of 190,000 PSI for demanding street and performance applications.

What material is this harmonic balancer bolt made from?
The bolt is manufactured from premium 35 chromoly steel and features rolled threads for enhanced strength and durability.

Can this bolt be used with aftermarket harmonic balancers?
In most cases, yes. It is designed for LS crankshaft damper applications using the factory mounting configuration.

What is the benefit of a 12-point head design?
The 12-point head allows easier socket engagement and installation while maintaining high-strength fastening capability.

Does this bolt include corrosion protection?
Yes. A black oxide finish and protective oil coating help resist rust and corrosion.

Is this a direct replacement for factory hardware?
Yes. This harmonic balancer retaining bolt is designed as a direct-fit replacement for compatible Gen III and Gen IV LS applications.