This exhaust gasket is made of high-quality solid copper material, offering great durability and resistance to cracking. Only high-quality materials ensure reliable performance. The exhaust gasket is a partial component designed for flexibility and reusability. It does not require a sealant and can be adjusted to the desired length based on actual needs, providing consistent performance. The package includes two washers for easy installation and operation. Installation can be completed without professional expertise. Each gasket features a coated O-ring design that creates a tight, leak-proof seal. Suitable for SB Chevy 283-327-350-383-400 engines. Please verify compatibility with your vehicle model before purchase. Specification: Size: 18.11x2.49x0.07 inch / 46x6.33x0.2 cm Material: Copper plated Package Includes: 2x Exhaust Gasket Seals