20-Pack Gearcase Drain Plug Seal Washers are precision-engineered replacements for Mercury and Mercruiser part numbers 26-830749, 26-8M0204694, and 8M0204693, ensuring a dependable seal for every lower unit service. Each washer is constructed from rubber-coated stainless steel, combining flexibility and durability to prevent gear lube leaks and protect against water intrusion. These washers fit 3/8-16 drain and fill screw holes on Mercury and Mercruiser outboards and sterndrives—matching OEM sealing performance and compression characteristics. Ideal for a broad range of models, including: Zeus 3000; 30–125 HP; 525 & 565 EFI; 65–80 JET; V-135, 150, 175, 200, 200XS; Formula 60; Alpha One; Bravo One, Two, Three, X, XR; Hi-Performance, Integrated, and M-Series Transoms; M8 Drive; NXT1 & SSM Series; 300–700 SCI; Vazer Drive; and the 110–400 VERADO and PRO XS series. Each washer is single-use by design, compressing under torque for a perfect seal—replace every time you change gear oil to maintain top performance and prevent costly gearcase damage. Package Includes: 20 × Drain Plug Seal Washers Dimensions: OD 0.55 in | ID 0.35 in | Thickness 1.5 mm