This Yamaha Stern Drive Thermostat Housing Cover is a must-have for any outboard engine owner. It is designed to fit perfectly on Yamaha 4.3L and 5.0L engines, providing superior protection against overheating and damage. Made from high-quality materials, this cover is built to last and withstand the rigors of all types of marine environments. With its sleek design and perfect fit, this Yamaha Stern Drive Thermostat Housing Cover is a great addition to any boat owner's arsenal. It is easy to install and use, and it comes with a full warranty from Yamaha. Don't let overheating or damage ruin your outboard engine's performance – get this cover today!