Engine Compatibility: Fits Compatible with Chevy small block and big block Compatible with V8 engines as well as 4.3L V6 applications for broad vehicle coverage Rubber Compound: Unique rubber formula delivers excellent abrasion resistance and long-term aging stability Bonding Technology: Special Chemlock bonding agent ensures a strong, durable rubber-to-metal bond for reliable service OEM Style Design: Manufactured to meet or exceed OEM specifications with application-specific durometer based on engine weight and torque Package Contents: Sold as a matched pair of 3-bolt rubber motor mounts for consistent fit and performance These 3-bolt S/B Compatible with Chevy rubber motor mounts are manufactured to meet or exceed OEM specifications. Fits most 1958-73 Compatible with Chevy passenger cars with small block Compatible with V8. Sold as a pair. Unique rubber formula provides good abrasion resistance and aging stability. Ensures maximum life and performance. Application-specific Durometer (hardness) based on engine weight & torque. Special Chemlock bonding agent ensures superior rubber-to-metal bond. These Compatible with Chevy motor mounts fit small and big block Compatible with Chevy engines as well as 4.3L V6 engines. Unique rubber formula provides good abrasion resistance and aging stability. Special Chemlock bonding agent ensures superior rubber-to-metal bond.