Sierra 18-2448 Lower Unit Fill/Drain Kit for Yamaha, Nissan/Tohatsu & Honda

The Sierra 18-2448 Lower Unit Fill/Drain Kit is a permanent gear lube service solution designed for outboard lower units from Yamaha, Nissan/Tohatsu, and Honda. Featuring M8 x 1.25 thread pitch, this kit installs directly into the gearcase to make routine gear lube changes quicker, cleaner, and easier than traditional drain plug methods.

Key Features:

• Permanently mounts in the lower unit gearcase for fast, repeat serviceability
• M8 – 1.25 thread pitch for precise fitment on compatible lower units
• Allows quick visual and conditional checks to verify gear lube has not been contaminated by water intrusion
• Provides a clean, controlled method to purge and replace gear lubricant — minimizing spill risk
• Exposed hardware constructed from marine-grade stainless steel for maximum corrosion resistance in saltwater and freshwater environments
• Kit includes all necessary components for a complete conversion of your existing drive unit

Sierra is a leading supplier of marine engine and drive parts, offering products engineered to meet or exceed OEM specifications. The 18-2448 is a reliable, professional-grade upgrade for any boater performing their own lower unit maintenance.

Thread Size: M8 – 1.25 | UPC: 808282339746 | Cross Reference: 47-2448, SIE 2448, 30-7021