10mm internal diameter aluminum sealing washer with large 17mm outer diameter commonly used for 10mm oil drain plugs as used on engines, transmissions and final drives. Used for oil level overflow plugs and drain plugs on most Guzzi transmissions and rear drives, as well as engine drains on small blocks and late model big blocks.

For the narrow shoulder 10mm ID crush washer used on Guzzi fluid line junctions, as well as for the bottom securing bolt on many fork legs use part number 25656102

10mm internal diameter aluminum sealing washer with large 17mm outer diameter commonly used for 10mm oil drain plugs as used on engines, transmissions and final drives. Used for oil level overflow plugs and drain plugs on most Guzzi transmissions and rear drives, as well as engine drains on small blocks and late model big blocks. For the narrow shoulder 10mm ID crush washer used on Guzzi fluid line junctions, as well as for the bottom securing bolt on many fork legs use part number 25656102