- Sierra 18-2430 Drain Screw Gasket
Sierra 18-2430 Drain Screw Gasket
Sierra's 18-2430 Drain Screw Gasket forms a tear resistant gearcase drain screw seal.
- Rubber coated, stainless steel washer.
Used with 3/8-16 drain/fill screw found on all Mercruiser and most Mercury/Mariner O/B gearcases.
- Mercruiser Stern Drive
- Mercury Marine
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