SeaSierra Marine Lower Unit Gear Lube Pump for Outboards & Sterndrives

SeaSierra Marine Lower Unit Gear Lube Pump

Designed for hassle-free gear lube transfers and everyday fluid moves, the SeaSierra pump provides a compact, reliable solution for boat maintenance and DIY projects. Its simple, ergonomic design helps you control viscous fluids with less strain and fewer spills, whether you’re in a garage or on a dock. The pump is built to handle routine tasks with steady, consistent flow, making it a dependable tool for quick fluid changes.

Key benefits

• Versatile & multi-purpose: ideal for routine fluid transfer across cars, boats, and workshop tasks.
• Universal bottle compatibility: fits standard 32 oz bottles with a 28 mm neck for easy stock handling.
• Adapters included: 3/8, 8 mm, and 10 mm adapters let you connect quickly to common containers.
• Marine-ready versatility: designed to work with most outboards and sterndrives, including Yamaha, Mercury, and Honda.
• Trusted expertise: SeaSierra brings decades of marine engineering know-how to every part.

Real-life uses

• Perform gear lube changes on a weekend boat without pulling out bulky equipment.
• Transfer viscous gear oil from a bottle to a transmission or lower unit with controlled flow.
• Keep your DIY garage tasks moving, from automotive maintenance to small marine tasks.

What you get out of the box is ready to go: a pump with universal adapters and a design that minimizes drips. Built to handle daily wear, the SeaSierra unit supports a range of fluid transfer tasks with reliability you can count on when you’re in a pinch on the water or at home.

Reliability, backed by experience

SeaSierra has served marine professionals and enthusiasts since 1987. From OEM manufacturing to premium aftermarket parts, the brand blends engineering rigor with practical design to deliver tools that perform when it matters most on the water.

Tips for optimal use

• Check bottle necks and ensure the 28 mm neck size for a snug fit.
• Use the included adapters to connect the pump to compatible containers quickly.
• Clean the pump after use and store in a dry place away from direct sunlight.