Crank Rear Oil Seal Conversion 1275cc Marina & Ital Engines. This kit will NOT fit 1275cc MG Midget or Sprite engines. For 1275cc Midget/Sprite engines use part no. 10M800A. Please note: This conversion is intended as an upgrade for the A-series engine for fitment during a full engine rebuild. It will not work as a 'sticking plaster' to prevent oil leaks on a worn engine.