This head bolt set is engineered for 370, 429, and 460 cubic inch V8 engines, covering 6.1L, 7.0L, and 7.5L displacements used across trucks, vans, and passenger vehicles from 1968 to 1999. Whether you're rebuilding a heavy-duty truck engine or restoring a vintage platform, this kit ensures secure, factory-level performance. Manufactured from hardened steel, these bolts provide high clamping force and long-lasting reliability under high-load conditions. They are a direct replacement for OEM part numbers C8SZ6065A and C8SZ6065B, making them a trusted choice for shops and DIY builders alike. Each kit includes 20 bolts to fully service both cylinder heads. No additional hardware is needed. This is a reliable solution for high-displacement V8 engines in need of a fresh, torque-ready installation. Engine Quest produces high-quality OE-style replacement parts. Each part undergoes rigorous testing and inspections to meet EngineQuest's exact specifications. Designed for precision manufacturing and durability, our products ensure easy installation. With nearly 500 SKUs available, the company specializes in hard-to-find, in-demand parts, including those no longer available from the OEM, difficult to salvage, or with prohibitively high OEM costs.