Feature 1、A direct replacement for the old and broken one. Reference OEM number is 807166A2. 2、Sophisticated craftsmanship, this is perfect to fit for Mercruiser Outboard Engine. 3、Professional-grade accessories, made of marine-grade stainless steel and rubber, are resistant to seawater , have a , and are designed to achieve the best performance. 4、For stern‑driven V6 engines with integrated exhaust manifolds, or engines with integrated exhaust manifolds originally, they are wider and have flat tips. 5、If you have ever overheated these tend to get damaged. Sometimes you will find pieces of them in the exhaust when you remove the drive for servicing. They help keep water from entering the engine through the exhaust. Item Type: Exhaust Y Pipe Water Shutter Flappers Material: Rubber+Stainless Steel OEM: 807166A2, 807166A 2 Fitment: Fit for Mercruiser stern drive V6 engines. Package List 1 x Pair of Exhaust Y Pipe Water Shutter Flappers Note 1. Please double check the part number of your item, matching information is for reference only. 2. If you are unsure of the item,