


O-ring for oil fittings (8M0188343)
Description
Quicksilver Oil Drain O-Ring (8M0188343) – V6 / V8 / V10
Noticed an oil sheen in the water after completing your 100-hour or 300-hour service? This is the most likely culprit. The oil drain plug O-ring should be replaced during routine service to prevent leaks and protect your engine.
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Genuine quicksilver part
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Required for each oil drain plug on V6, V8, and V10 Four Stroke outboards
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Helps prevent oil seepage into the water after service
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Simple to install during routine oil changes
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Meets Mercury OEM specifications for a perfect seal
Pro Tip: Always replace O-rings when servicing your outboard oil system. Reusing old seals increases the risk of leaks, performance issues, and environmental contamination.
Backed by Quicksilver, the trusted supplier of Mercury Marine original equipment parts for over 65 years. Using genuine Quicksilver means protecting your outboard with OEM quality, reliability, and peace of mind.
O-ring for oil fittings (8M0188343)
Old part number 8M0036228