OEM-Quality Bolt Set: This 34-piece Grade 8 cylinder head bolt set provides OEM quality, promising exceptional performance and reliability for your small block Compatible with Chevy Compatible with V8 engine. Preventative Measure: Replacing your cylinder head bolts is a cost-effective strategy to avoid unexpected downtime in the shop, ensuring your engine runs smoothly and consistently. High-Strength Design: The bolts are built for a 120,000 PSI proof load, 130,000 PSI yield strength, and a 150,000 PSI tensile strength, ensuring optimal resilience and durability for your engine. Ready for Assembly: Each bolt is coated with sealant, saving you time during assembly and ensuring a secure, proper installation every time. Designed for Specific Engines: Ideal for cast iron cylinder heads where washers are not required, these bolts feature a 5/8” hex head and are the perfect length for your Compatible with Chevy engine, allowing for an accurate and effective setup. OEM-quality Grade 8 cylinder head bolt set (does both heads) Cheap insurance to prevent downtime in the shop. For use with cast iron cylinder heads (without washers) Stock Compatible with Chevrolet bolt length. 5/8” hex head (not undersized) 120,000 PSI proof load, 130,000 PSI yield strength, 150,000 PSI tensile strength. Threads are coated with sealant. Set contains 34 bolts (does 1 engine) If you're assembling a new iron-head small block Compatible with Chevy motor or rebuilding an old set of factory heads, we have all the engine hardware you'll need to do it right! This 34-piece complete bolt set features OEM-quality Grade 8 fasteners. Replacing your cylinder head bolts is cheap insurance to prevent downtime in the shop. These bolts are for use with cast iron headed S/B Compatible with Chevy engines where washers are not needed. Each bolt is the proper length and features a 5/8 inch hex head for high strength, up to 150,000 PSI tensile strength. Each bolt arrives coated with sealant for a proper install. Each set is the correct number of bolts to complete one small block Compatible with Chevy engine (2 cylinder heads).