GLM Products 89160Click To Copy Water Shutter 3"

WATER SHUTTER 3" (89160) GLM Products is a product that fits Mercruiser Y-Pipe V6 V8 w/3" 1982-1987. The engine exhaust system pipes sometimes referred to as the Y-Pipe or Bullhorn, include the Exhaust Water shutters. The Exhaust Shutters' primary function is to prevent water from returning through the exhaust system and into the engine. Exhaust water shutters help to prevent backflow and safeguard engines from water infiltration. When traveling slowly or stopped, a heavy-duty rubber flapper valve prevents following waves from accessing the exhaust exit.