Stud/Washer for Duramax Puller/Installer Tool

The Stud/Washer for Duramax Puller/Installer Tool (Part Number 918999D) is a precision steel fastener component designed for use with ATI balancer installation and removal equipment on General Motors Duramax engines. This black oxide-finished adapter bolt serves as the critical connection point in the balancer tool assembly, enabling technicians and engine builders to safely engage and disengage harmonic balancers without risk of component damage or misalignment during high-torque operations.

Manufactured from steel with black oxide finish, this stud delivers the mechanical integrity required for repeated removal and installation cycles on Duramax balancers. The black oxide coating provides corrosion resistance in engine bay environments where moisture and temperature fluctuations are constant factors. Weighing 1.19 lbs and dimensioned at 4.25 x 0.85 x 4.6 inches, the component integrates seamlessly into the ATI tool's mechanical geometry, maintaining precise centering geometry essential for balancer pull operations. The stud design allows for controlled load distribution, preventing the concentrated stress points that can strip threads or crack balancer components during extraction.

This fastener is essential for independent shop technicians, diesel engine specialists, and serious enthusiasts rebuilding or servicing Duramax-equipped vehicles. Whether performing routine balancer maintenance or executing a full engine rebuild, this replacement stud ensures the ATI tool functions with the precision tolerances required for professional-grade results. Having a verified OEM-specification replacement on hand eliminates delays during critical engine work when balancer tool components wear or sustain damage from prior installations.

ATI's balancer tool ecosystem represents the standard choice across diesel performance shops due to proven reliability and design consistency. This stud component is a direct fit for the factory ATI system, ensuring compatibility without modification or machine work. When sourcing replacement parts for specialized engine service tools, OEM specification and exact fitment are non-negotiable—this component delivers both.