New Replacement exhaust flappers for Mercruiser part number 807166A2.Used on many Mercruiser 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 Mercruiser stern drive V6 engines with one pieceexhaust manifolds, or that had the 1 piece manifolds these are wider 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 the drive for servicing. They help keep water from entering the engine through the exhaust.Size: approx.15.7 x 7.7 x 0.4 cm / 6.18 x 3.03 x 0.16 inchMPN: 807166A2Compatible With: fit for Mercruiser V6Colour:blackMaterial:ABSPackage Contents:1 * Exhaust Flapper Water ShutterOnly the above package content, other products are not included.Note: Light 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.