This Westerbeke Block to timing cover gasket #12406 is a must-have for those looking to keep their diesel engine in top condition. The OEM gasket is brand new, ensuring maximum performance and reliability for your boat. Designed specifically for Westerbeke engines, this gasket is the perfect replacement for your old or worn-out one. The gasket is compatible with a variety of Westerbeke engines and is easy to install. It's a great investment for any boat owner who wants to keep their engine running smoothly. Don't miss out on this opportunity to upgrade your boat's engine with this high-quality gasket.