New Replacement exhaust flappers for part number 807166A2.Used on many for stern drive V6 engines.The replacement part is made from high quality material and well-tested by the manufacturer.Please check carefully the part numbers and compare pictures provided to insure proper fitment.Used on for stern drive V6 engines with one piece exhaust manifolds, or that had the 1 piece manifolds these are and have a flat tip.If you have ever overheated these tend to get damaged. Sometimes you will find pieces of them in the exhaust when you remove for servicing. They help keep water from entering the engine through the exhaust.Size: .15.7 x 7.7 x 0.4 cm or 6.18 x 3.03 x 0.16 inchCompatible With: fit for V6Colour:blackMaterial:ABSPackage Contents:2 x Exhaust Flapper Water ShutterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.