GHmarine 8M0058389 Oil Vent Plug – 2-Pack Lower Unit Gear Lube Drain & Fill Screws & Seals for Mercury/Johnson

GHmarine 8M0058389 Oil Vent Plug Kit for Marine Gear

Designed for practical maintenance on Mercruiser and Chrysler stern drives, this GHmarine kit delivers a tidy, reliable solution for lower unit gear lube service. The package includes two oil vent drain plugs and four gaskets, giving you ready replacements for routine maintenance or emergent repairs when you’re on the water or at the dock.

What’s included

• 2 oil vent drain plugs
• 4 gaskets for quick resealing during service

Compatibility and fit

The drain and fill hole assemblies use standard 3/8-16 threads commonly found on stern drives and outboards (with exceptions such as the Verado series). They align with a wide range of models, including Mercruiser 10-14834, 10-14834A1, 22-67892, 22-67892A06, 22-8M0058389, 22-67892A1, Chrysler 2267892A1, GLM 21731, Mallory 9-72651, among others.

Key benefits in use

• The magnetic design of the drain plugs helps attract metal filings during flushing and refilling, supporting cleaner gear lube and smoother operation.
• Durable construction and precise machining provide an effective seal that helps prevent gear lube leaks and water intrusion into the gear case.
• The included gaskets offer spare sealing options, helping reduce downtime during maintenance cycles and on extended trips.

Real-world use and considerations

Imagine performing a routine lower-unit service at the marina. The kit’s two plugs and four gaskets streamline replacements, while the magnetic feature provides a simple safeguard against debris. The compatible thread size (3/8-16) covers a broad swath of stern-drive configurations, making upgrades during service straightforward. The result is a more confident maintenance routine and steady performance on the water, without overpromising outcomes.

Why choose GHmarine

• Trusted marine hardware with model-wide compatibility
• Two-plug, four-gasket kit for value and convenience
• Emphasis on reliable sealing and debris management during gear lube work

Note: This kit is designed to support maintenance activities and does not constitute a warranty of performance. Actual results depend on engine condition, maintenance habits, and operating environment.