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9 4-Stroke 1996–2004 63V-W0078-01-00
This is critical for preventing corrosion
Tighten the bolts on the cavitation plate
Brand Part Number OMC 5001594 OMC 390768 Sierra 18-3392 GLM Marine 12102 Mallory 9-48203 Red Rhino JE-410
The most common symptoms are engine overheating
Exhaust Water Shutter (Flapper) – Fits MerCruiser 2.5L, 3.0L, 3.7L Engines (Replaces 60930, 25-43809) 173HP 9 4-Stroke 1996–2004 63V-W0078-01-00Product Details This Exhaust Water Shutter (Flapper) Fits MerCruiser 2. 5L, 3. 0L, 3. 7L Engines (Replaces 60930, 25 43809) is an essential replacement part for MerCruiser stern drives. Specifically designed for 2. 5L, 3. 0L, and 3. 7L inline 4 cylinder engines from various model years, it functions as a critical one way valve in the exhaust system to prevent water from flowing back into the engine cylinders. This part serves as a direct replacement
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