Peterson Fluid 06-4111 3-Bolt Spline Drive Hub Small Block Chevy ATI MSD

Peterson Fluid Systems 06-4111 is a precision-engineered 3-bolt spline drive hub kit designed for Small Block Chevy applications using ATI balancers and MSD crank triggers. This high-performance drive system provides a superior alternative to traditional mandrel-style accessory drives.

Key Features:

• Precision machined from 6061-T6 billet aluminum with hard coat black anodized finish
• Eliminates problematic long crankshaft bolts that can cause installation issues
• 3.2-inch bolt circle with 1.820-inch outside diameter and 0.080-inch depth
• Compatible with all Peterson spline drive components including oil pumps, vacuum pumps, alternators, and water pumps
• Includes all necessary mounting hardware for harmonic balancer installation
• Splined mandrel design provides positive drive engagement for Gilmer, HTD, or V-belt applications

This kit is specifically engineered for drag racing and high-performance street applications where reliable accessory drive is critical. The spline drive system allows pulley stacks to be retained by a nut while using stock-length damper bolts in most applications. Works seamlessly with Peterson's complete line of spline drive accessories and pulleys.