This marine engine zinc donut shaft anode from CAMP is a high-quality part for your boat. It is designed to fit 1-3/8" engines and is made with durable materials. The anode is compatible with a variety of brands and manufacturers, making it a versatile choice for your boat. Whether you're looking to replace a damaged anode or you're upgrading your marine engine, this CAMP anode is a great choice. It is easy to install and will provide reliable performance for your boat. Don't miss out on this opportunity to improve your boat's motor!