Mitsubishi 4A90, 4A91 and 4A92 engine which is found in newer version of Colt, Lancer or even ASX, should be consider under the same family of engine, their flywheel oil seal (some call it as crankshaft oil seal) is come with the metal housing, initially I thought it should be sharing the same type of oil seal, until I found one of the full set gasket we sold to customer, the customer coming back with their oil seal which they stated the oil seal in the set have slightly different from the one dismantled from engine.
The photo above showing the front side of the oil seal and the photo below is showing the reverse side, the one on top of the photo is the oil seal dismantle out from the engine while the bottom one is the oil seal content in the gasket kit.
At a glance it seems nothing different but one or two screw hole alignment are not in the same place for both oil seal, the oil seal content in the gasket is with the part number 1052A150 or 1052B059, still trying to getting the part number for the oil seal that is taken out from this engine, suspected we may search it under Smart Fortwo or Smart Forfour engine version.
