Flappers Shutters 1982 1996 Mercruiser 807166A3 Review

New Pair of Replacement Water Shutters,1 pair Required Per Engine. Replaces Part #: 807166A3, 18-2732-9, 143481 , 14348A1 , 14348A2. For 1982-1998 Mercruiser 5.0L 5.7L V8 & 4.3L V6. Designed for MerCruisers Engines 1982-1996, there are some 1996 and 1997 models that apply. Fits the oval 4" Y-pipes with round pin holes. If you have two rectangular holes for the grommets you will need the A1 water shutter. If your Y-pipe changes size a few inches bellow the shutter you have a one piece manifold V6 Y-pipe and need shutter A2. This is a replacement for original flat oval plate with a round pin that is offset in the Y-pipe.