10 Pack Red Drain Plug Gaskets For Yamaha Outboard Lower Unit Gear Oil Seal 4 Stroke Replacement 0.51 X 0.31 Inch Durable Hard Steel Fiberboard Seals DIY Friendly Spare Parts For Easy Maintenance

10-Pack Red Drain Plug Gaskets for Yamaha Outboard Lower Unit
✔️ 10-pack red fiberboard gaskets, 0.51 x 0.31 in, Yamaha 90430-08020-00/90430-08003-00

This 10-pack set includes red drain plug gaskets made from hard steel fiberboard. They seal the lower unit gear oil on Yamaha 4-stroke outboards, making DIY maintenance simple and reliable in marine environments.

✅ 10-pack red fiberboard drain plug seals
✅ Material: hard steel fiberboard
✅ Size: 0.51 in × 0.31 in (13 mm × 8 mm)
✅ Compatible with Yamaha lower units: 90430-08020-00, 90430-08003-00
✅ For lower unit gear oil sealing in Yamaha 4-stroke outboards

💡 What is a drain plug gasket used for in outboard gear oil systems?

A handy guide for understanding seals in Yamaha gear oil setups. - seals drain plugs to keep gear oil in and water out - handy for DIY maintenance and spare parts in marine engines - fiberboard material resists moisture in saltwater environments