Description: 【Reliable Material】This outboard thermostat is made of stainless steel and copper materials with high thermal conductivity, high hardness, heat resistance and corrosion resistance. The rubber seal in the middle needs to have a sealing effect, so we used NBR, which is more heat-resistant, corrosion-resistant and oil-resistant. Our seal is thicker, which has good sealing effect 【Fitment】Fit for 4-stroke outboard motors: BF8D; BFP8D; BF9.9D; BFP9.9D; BF15D; BFP15D; BF20D; BFP20D; BF25D; BF30D; BF40A; BF40D; BF50A; BF50D; BF60A; BFP60A; BF75D; BF90D; BF200A; BF225A 【Function】The thermostat ensures temperature control of the boat, allowing you to maintain the optimal temperature of the engine and other components, thereby improving performance and fuel efficiency 【Easy Installation】Outboard engine thermostat is manufactured to meet specifications for fit, form and function. It is easy to use and can be used for a long time 【Package Includes】The package includes thermostat that is straightforward to install, making it a convenient replacement part for maintaining your outboard engine's efficiency   Specification: Material:Metal Size Chart: 4.3cmx1.0199999999999998cm/1.69inchx0.40inch Package Includes: 1x Outboard Engine Thermostat Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.