【Replace Part Number】: for Sierra 18-2727; for Mallory 9-42800; for MerCruiser 60930, 25-43809.
【Ultimate Temperature Resistant Material】:This Exhaust Shutter silicone rubber body can withstand temperatures above 200°C for a long time, effectively avoiding softening, melting, or failure due to high temperature during engine high load operation.
【Triple Durable Material】:The outer layer of this exhaust flapper valve is made of high-temperature resistant silicone rubber, and the middle layer is embedded with reinforced steel plates to provide rigid support, ensuring that it will not tear or fall off under the long-term impact of engine exhaust pulses. The center is a stainless steel shaft pin, which rotates more smoothly and is less prone to rusting. Extend the replacement cycle and improve reliability.
【Excellent Corrosion & Aging Resistance】:This water shutter has super strong resistance to seawater corrosion and aging, maintaining elasticity and flexibility for a long time, not easily hardening or cracking, and has long-lasting sealing performance.
【Function】:Prevent water from flowing back into the cylinder when the engine is turned off, to avoid catastrophic hydraulic lock damage. Common fault symptoms: water entering the cylinder (hydraulic lock), difficulty starting, knocking sound in the exhaust area, or old baffle damage and cracking.
【Installation Steps】: Before installation, allow the engine to cool completely, disconnect the battery, remove the old baffle and gasket on the exhaust housing, clean the residue on the inside of the housing, install the new gasket, and firmly press the new water louver to ensure proper installation.
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