Damper Bolt Kit - LS1 Y-Body 8 Groove

The ATI Performance Damper Bolt Kit for LS1 Y-Body 8-groove harmonic balancers is a precision fastening solution designed specifically for small-block Chevy engine builders and street/strip mechanics. This kit ensures the correct fastener specification for secure damper attachment, eliminating guesswork during engine assembly and ensuring proper harmonic balancer retention under load.

The kit includes bolts with a 5/16-18 thread specification, featuring a Torx pan head design. The bolts are finished in black oxide steel, providing corrosion resistance and durability in engine bay conditions. This finish not only protects against rust but also offers a professional appearance on visible fasteners, while the Torx drive geometry prevents cam-out during installation.

Engine builders, performance shops, and experienced DIY builders will find this kit invaluable for LS1 engine assembly, rebuilds, or damper replacement. Correct damper fastening is crucial to prevent damper slip, crank damage, or catastrophic engine failure, making this kit an essential component for anyone working on street engines, road-race platforms, or drag racing applications.