ACDelco 11570163 Crankshaft Harmonic Balancer Bolt - M16x2x131

The ACDelco 11570163 is a GM Genuine Parts crankshaft harmonic balancer bolt designed for high-performance GM engines. This precision-engineered fastener features M16x2x131 thread specifications and is specifically designed for LS7, LS3, LS9, and LT1 engine applications.

Key Features:

• M16 x 2.0mm thread pitch x 131mm length
• GM OE quality meeting rigorous factory standards
• Torque-to-yield design for optimal clamping force
• Application-specific for 7.0L engines with dry sump systems and 6.2L supercharged engines
• Replaces GM part number 11589178

Important Installation Note: This is a torque-to-yield fastener that must be replaced each time it is removed. Do not reuse this bolt after removal, as the torque-to-yield design permanently stretches the fastener during installation to achieve proper clamping force.

Backed by General Motors warranty and engineered to exact OEM specifications, this genuine ACDelco balancer bolt ensures proper harmonic balancer installation and engine reliability in demanding high-performance applications.