Crank Hub Steel LS1 Y-Body w/28 Tooth Pulley

The ATI Performance Crank Hub Steel LS1 Y-Body w/28 Tooth Pulley (SKU ATI916033A) is a precision harmonic balancer hub engineered for GM LS-series engine platforms. This black oxide-finished steel component manages crankshaft vibration while integrating a 28-tooth pulley for accessory drive synchronization—a critical element in high-performance engine builds where harmonic control directly influences longevity and drivability.

Weighing 3 lbs with compact dimensions (5 x 4 x 6 inches), this hub is purpose-built for LS1 and compatible Y-body engine applications. The 28-tooth pulley specification matches OEM serpentine belt drive systems, ensuring proper alternator, water pump, and power steering pump operation without modification. Steel construction with black oxide coating provides corrosion resistance in both street and competition environments, while the precision-machined hub body maintains tight tolerances required for balanced crankshaft assembly.

Buyers upgrading LS-powered vehicles—whether street rods, performance trucks, or race applications—rely on ATI balancer components to replace worn factory hubs or optimize new engine builds. The 28-tooth configuration maintains compatibility with standard LS accessory systems, eliminating the need for costly belt routing modifications. This hub is essential for anyone rebuilding an LS engine or seeking OEM-spec replacement parts backed by a recognized performance manufacturer.

ATI Performance specializes in LS-series engine components and balancer assemblies. This steel hub option provides an economical, proven alternative to cast iron factory units while maintaining full compatibility with OEM accessory drive systems and serpentine belt tensioners across LS engine platforms.