Gearcase Cover Nut 688-45384-00 Marine Part for Outboard Motors

This gearcase cover nut is a marine part crafted for two-cycle outboard manufacturer two-stroke outboard motors in the 60-85 power output range. It serves as a dedicated outboard motor part where a fit and stable assembly are needed in the gearcase area. As an outboard gearcase nut, it helps secure the cover in place and supports the lower unit’s structure during routine maintenance or replacement work. The circular fastener-shaped cover nut includes evenly spaced internal protrusions, while the ridged outer edge gives it a defined grip and a clearly machined appearance. The part is marked 688-45384-00 688-45384-00, which provides a clear reference for matching the correct gearcase cover fastener for the intended application. With dimensions of 10 x 1.4 cm and net weight of 80 g, it has a compact, practical profile that is easy to identify, handle, and install when servicing compatible equipment.