7/16in. Head Bolt Bushings- 20pcs.

The 7/16in. Head Bolt Bushings are designed to isolate cylinder head bolts from direct aluminum-to-iron contact, making them essential for high-performance engine builds and restorations. These bushings act as thermal and electrical barriers, preventing galvanic corrosion and heat transfer issues that can arise in mixed-metal engine assemblies.

Precision-manufactured to fit 7/16-inch diameter fasteners, these bushings create a mechanical gap that reduces direct metal-to-metal contact while maintaining the necessary bolt preload and clamping force. This is crucial for ensuring proper head gasket compression and long-term seal integrity in engine applications.

Ideal for experienced engine builders and enthusiasts, the 20-piece package covers a typical V8 engine configuration. These bushings are compatible with aluminum heads and iron blocks, making them a versatile choice for various engine setups.