Volvo Penta OMC BRP 311598 Lower Unit Drain/Fill Plug O-Ring Gasket – OEM Style

Small part, big headache if it leaks.

This is the OEM-style O-ring gasket for Volvo, OMC, and BRP lower unit drain/fill plugs—part #311598 and cross #98-304-09.

Brand new, simple, and exactly what you need when changing gear oil.

Don't reuse that squished old ring; grab this fresh seal and button up your lower unit with confidence.

Fits a bunch of Sterndrive applications.

It’s not flashy, but your boat will thank you come launch day.

No leaks, no worries.

Keep a spare in the toolbox—you never know when that crusty ring will give out.