Megafate Yamalube Yamaha Outboard Lower Unit Gear Lube Kit — 1 qt Yamalube, OEM Gaskets & Pump Adapter for F15–F250

Complete Yamaha lower unit maintenance kit: one quart of Yamalube gearcase oil, two genuine OEM gaskets, and a pump with Yamaha adapter for a proper drain and refill.

Keep your Yamaha outboard’s lower unit sealed and lubricated with a ready-to-use kit that supplies the correct oil grade, factory replacement gaskets, and a pump sized for Yamaha drain ports. This combination simplifies routine service, helps prevent leaks, and ensures the lubricant you add matches Yamaha specifications for models from small 2-stroke engines up through larger 4-stroke models.

Which Yamaha engines will this kit work with?

This kit is built to fit a wide range of Yamaha outboards across both 2-stroke and 4-stroke lines. It covers common models used on fishing and recreational boats, matching the OEM lower unit drain and fill configuration.

• Compatible models: F15, F20, F25, F40, F50, F60, F70, F75, F90, F115, F150, F175, F200, F225, F250, and related 150/175 designations.
• Works with both 2-stroke and 4-stroke gearcases when they share the listed drain/fill fittings.
• Includes an adapter pump to fit Yamaha-style lower unit openings for an easier oil transfer.

What’s included and why each part matters?

The kit groups the exact lubricant, OEM gaskets, and a pump so you can service a lower unit without hunting parts. Each item addresses a specific maintenance need: oil protects gears, gaskets prevent water intrusion, and the pump speeds clean oil transfer.

• One quart Yamalube ACC-GEARL-UB-QT — factory-formulated marine gearcase lubricant for proper gear protection.
• Two genuine OEM 90430-08003-00 gaskets — factory-fit seals that minimize leak risk after service.
• Pump with Yamaha adapter — allows neat, controlled filling and easier oil removal from tight lower units.

How do I use the pump and gaskets during a lower-unit oil change?

Service typically involves draining old gear oil, replacing the gaskets, and refilling with fresh Yamalube. The pump adapter fits the Yamaha ports so you can extract and insert oil without tipping the boat excessively or creating spills.

• Remove lower unit drain/fill plugs and drain old oil into a container for disposal.
• Replace worn gaskets with the included OEM 90430-08003-00 parts to restore a factory seal.
• Attach the pump and adapter, then draw new Yamalube from the quart bottle to refill to the manufacturer’s specified level.

How does this kit help avoid common service mistakes?

Using manufacturer-approved oil and genuine gaskets reduces the risk of premature gear wear and seal failures. The pump reduces spills and overfilling, which are common issues when refilling lower units by hand or improvised means.

• Yamalube formula is matched to Yamaha tolerances, lowering the risk of incompatible additives or viscosity problems.
• OEM gaskets ensure the correct fit and material compatibility for a reliable seal.
• Pump adapter minimizes cross-threading and messy top-offs that can compromise fittings or create contamination.

Who this kit is for: Boat owners, DIY marine technicians, and marina service shops that maintain Yamaha outboards and want an all-in-one lower unit service pack. It’s ideal for routine tune-ups, seasonal maintenance, or anytime you need to reseal and refill a Yamaha lower unit with factory-recommended components.