JLM MARINE Lower Unit Gear Lube Pump Kit for Mercury, Yamaha, Honda, Suzuki – 3/8in Swivel, 8mm/10mm Adapters, Suction Tubes

Effortless lower-unit maintenance with a complete pump kit

Keep your outboard running smoothly with a purpose-built gear lube pump kit designed for DIY boat owners. Ready to use straight out of the box, this kit includes a 3/8in swivel for Mercury/OMC, and 8mm and 10mm metal adapters for foreign-made models. Two suction tubes and a 19.5-inch hose ensure you can reach fill ports without unnecessary disassembly. The result is a cleaner, more controlled gear oil transfer that fits typical quart bottles and gear lube blends.

What’s included and how it helps

• 3/8in swivel adapter (Mercury/OMC) for secure, leak-free connections
• 8mm and 10mm metal adapters for Yamaha, Honda, Suzuki, and similar models
• Two suction tubes of different lengths (tall and short) to fit standard quart bottles
• 19.5-inch flexible hose to reach tight or awkward fill ports without spills

Key benefits at a glance

• Clean, mess-free transfers: designed to minimize drips and spills during the gear oil change
• Out-of-the-box readiness: no extra parts needed beyond standard quart gear lube bottles
• Durable construction: sturdy metal adapters (not plastic) for repeated use
• Wide compatibility: supports Mercury/Mariner, Yamaha (8mm), Honda, Suzuki, Tohatsu, and Johnson/Evinrude models

Fit, compatibility, and practical usage

The kit adapts to both traditional 3/8-16 UNC threads (common on US-origin Mercury/OMC) and metric 8mm/10mm threads (common on foreign-made outboards). It works with standard quart bottles that have a 28mm cap thread, making it a versatile choice for typical gear lube brands. A 19.5-inch hose and two suction tube lengths help you reach fill ports that are hard to access, which can make maintenance projects quicker and less messy.

Usage ideas and tips

• Attach the appropriate adapter to match your outboard’s fill port, then attach the swivel for a secure seal.
• Use the shorter suction tube for compact bottle openings and the taller tube for deeper bottles.
• Pump with a steady, controlled rhythm to transfer gear lube directly into the lower unit without disassembly.
• Pair with your regular 32-oz or quart gear lube bottles for convenient DIY maintenance.