99370A2 Exhaust Manifold Water Shutter Flapper for MerCruiser Stern Drives V6 V8 Engines Replacement Mercury Quicksilver OEM 23-92852 Sierra Marine 18-2733 Onan Marine Engine / Generator Sea Raw Cooling Pump 37-826313A01

37-826313A01

Reference Aftermarket Brand:

1X Water Pump Impeller with Key Pin 47-19453T

Yamaha Marine Outboard 663-W0078-01 663-W0078-A0

Lombardini    LDW 1603 M

99370A2 Exhaust Manifold Water Shutter Flapper for MerCruiser Stern Drives V6 V8 Engines Replacement Mercury Quicksilver OEM 23-92852 Sierra Marine 18-2733 Onan Marine Engine / Generator Sea Raw Cooling Pump 37-826313A01Soxa Marine Stern Drive Exhaust Manifold Water Shutter Flapper Kit SoxaMarine 99370A 2 Water Shutter acts as a flexible check valve to stop water from returning up the exhaust system to the engine. Compatible with various V6 V8 1982 1987 Year MerCruiser stern drive engines exhaust manifolds installations Replaces Mercury Mercruiser OEM 99370A2, 99370A 2 and Mercury Quicksilver 23 92852, 92852 Match to Aftermarket Sierra Marine 18 2733, Mallory Marine