911019 OMC SEAL

OEM OMC Johnson/Evinrude oil seal (part 911019, also marked 0911019) with shaft dimensions of 1.000 inch inner diameter, 1.375 inch outer diameter, and 0.435 inch width. This seal prevents oil leakage around rotating shafts in Johnson Evinrude outboard motors and OMC Sterndrive applications. Equivalent to Sierra Marine part number 18-2066. Critical wear item for engine oil retention and system integrity; replacement recommended during major overhauls or when shaft leakage occurs.