While the OE B58 Girdle fasteners may suffice for original equipment properties, they fall short for enhanced output. In higher power engines, we are noting fretting transfer on the main caps, between the caps and the girdle. Our upgraded hardware addresses these issues by preventing movement, making these fasteners essential for high-performance B58 engines.

The bolts are specifically designed to:

• Support the load and tensile requirements for increased output.
• Attain ASTM conformance certification. All materials must align with AMS raw materials batch standards.
• Feature optimized thread engagement and shank length for each specific bolt location.
• Meet or exceed a minimum tensile strength of 190kpsi.
• Be custom age-hardened.
• Offer corrosion resistance without any coatings or plating that could wear or degrade.
• Be indefinitely reusable unless stretched beyond the acceptable elongation limit.

This kit includes 20 bolts; apply a dab of engine oil and torque each to 30 ft-lb.