Hi. I have a pair of new Mercury outboard chaps, and I'm trying to figure out what engines they fit. I purchased these from a dealer downsizing auction a few months ago, therefore I have no idea what the engine model / serial numbers were. The only numbers I can find are molded on the inside surface of each one. They are # 885363 and 885364. Searching online, all of the part #s I can find have suffixes on them that I do not have on mine. Like 885363-03 and 885363-04. (I'm not sure, but I think these suffixes may designate what shaft length option these fit??). I called Mercury, and was told I would need engine model #s to figure out what engines these fit. Again, I have no way of knowing this info. So the question is, can anyone help me figure these out by dimensions or pictures maybe? Any help is HIGHLY appreciated! Thank you.

