ARP Harmonic Balancer Bolt Kit Square Drive

The ARP Harmonic Balancer Bolt Kit with square drive is a high-strength fastener upgrade for securing the harmonic balancer (damper) to the crankshaft. ARP builds its fasteners to replace stock bolts that can stretch, loosen, or fail under high load. This makes the kit a good choice for performance street, racing, and heavy-duty engine builds.

Key Features:

• Square drive head style for secure wrench engagement during installation
• Made from premium alloy steel for strength and durability
• Precision-machined, with rolled threads for fatigue resistance and consistent clamping force
• Engineered to hold the harmonic balancer securely under high rpm and high torque
• Manufactured in the USA under ARP's quality control standards

ARP is a respected name in racing and performance fasteners. Replacing a factory harmonic balancer bolt with an ARP kit adds reliability and peace of mind to an engine rebuild or performance upgrade. Several variants are available in this product line, so choose the one that matches your application.