Sierra 18-1211 Rear Main Seal Replaces MerCruiser 26-814622Sierra two piece rear main seal for Most GM Based Marine Engines.Application Info:Fits 120/2.5L (s/n 2786857 & up), 140/3.0L & LX (s/n 6229718 & up) Fits 150/160/165/200 (I/L-6) (s/n 2770032 & up), 175/185/205/262/4.3L V-6 (s/n 6330183 & up) Fits 200/228/225/230/250/255/260/270/280/300/320/5.0L/5.7L/898 (V-8) (s/n 2453769 & up)Interchangeable with: GLM; 85490; Johnson/Evinrude Outboard; 473424; Mallory; 9-61620; Mercruiser Stern Drive; FI5110041; FI5110027; FI5110026; 26-49947; 26-58203; 26-814622; OMC Inboard; 473424; OMC Stern Drive; 473424;