Pro Series GM Gen IV LS7 and Gen V LT1 Harmonic Balancer Damper Bolt Kit

• Fits GM Gen IV LS7 and Gen V LT1 harmonic balancer damper bolt applications

• 35 chromoly steel construction provides strength for high-clamp crankshaft retention

• 12-point head design helps support secure installation and serviceability

• Black oxide finish with oil coating helps resist rust and corrosion

Secure your crankshaft damper with confidence using the Top Street Performance Pro Series GM Gen IV LS7 & Gen V LT1 Harmonic Balancer Damper Bolt Kit. Designed specifically for LS7 and LT1 engine applications, this premium harmonic balancer retaining bolt provides the strength and reliability needed for engine rebuilds, balancer replacements, and performance upgrades.

Manufactured from heat-treated 35 chromoly steel with rolled threads and a durable black oxide finish, this crankshaft damper bolt is engineered to withstand the demanding loads generated by high-performance street and racing engines. With a minimum tensile strength of 190,000 PSI, it delivers superior clamping force to help maintain proper harmonic balancer retention under extreme operating conditions.

Whether you're installing a new harmonic balancer, replacing factory torque-to-yield hardware, or completing a fresh engine build, this LS7 and LT1 harmonic balancer bolt kit provides a dependable fastening solution for your crankshaft damper assembly.

• Designed for GM Gen IV LS7 and Gen V LT1 engines
• Ideal for harmonic balancer replacement and engine rebuild applications
• Manufactured from heat-treated 35 chromoly steel
• Rolled thread design for improved strength and durability
• Black oxide finish helps resist corrosion
• Minimum tensile strength of 190,000 PSI
• Provides secure crankshaft damper retention
• Suitable for street, performance, and racing applications

What engines does this harmonic balancer bolt kit fit?
This harmonic balancer damper bolt kit is designed specifically for GM Gen IV LS7 7.0L and Gen V LT1 6.2L engines. Always verify your engine application before ordering.

What is the purpose of a harmonic balancer bolt?
The harmonic balancer bolt secures the harmonic balancer (crankshaft damper) to the crankshaft. Proper clamping force is critical for maintaining balancer alignment and preventing movement under engine load.

Should I replace the harmonic balancer bolt when servicing the balancer?
Yes. Replacing the balancer bolt during harmonic balancer installation or removal is considered best practice, especially when servicing high-performance engines or replacing factory torque-to-yield hardware.

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

Does this bolt include corrosion protection?
Yes. The bolt features a black oxide finish that helps resist corrosion while maintaining a professional appearance.

Can this bolt be used with aftermarket harmonic balancers?
In most cases, yes. This bolt is designed for LS7 and LT1 crankshaft applications and is commonly used with both factory and aftermarket harmonic balancers that utilize the original mounting configuration.

What is the advantage of rolled threads?
Rolled threads create a stronger fastener by maintaining the grain structure of the steel, helping improve fatigue resistance and overall durability compared to conventional cut threads.

Is this a direct replacement for factory hardware?
Yes. This harmonic balancer retaining bolt is designed as a direct-fit replacement for the specified LS7 and LT1 applications.

Why is proper harmonic balancer retention important?
Proper harmonic balancer retention helps maintain crankshaft stability, reduce harmful vibrations, and ensure the damper remains securely attached during normal and high-performance engine operation.