Unsure of your engine serial number but the main difference should be the room (length wise) you have to install the longer filter. Mercruiser categorized the correct filter by engine serial number which hopefully you use when buying any parts for your engine.
Below are what fits what and some have had issues installing oil filters do to room/length. See the 3 reviews near the bottom,
http://www.walmart.com/ip/Mercury-Qu...ilter/17165285
35-8M0065104: Mercruiser 35-8M0065104 Four Stroke Oil Filter. Fits: Mercury/Mariner 25hp. Four Stroke (Carb, MY2006 & prior), 30 hp Four Stroke (3 cyl., MY2005 & prior), all 40-60 hp. Four Stroke outboards (MY 1998 & newer) and all 75-115 hp. Four Stroke outboards (USA 1B366822 & prior). Replaces Mercruiser 35-822626K04, 35-8M0008397, 35-822626T2 and 35-8777768K01........
Mercruiser 35-877761K01 Four Stroke Oil Filter. Fits:
- 75/90/115 hp Four Stroke Outboards (USA 1B366823) and above
- 150 hp EFI Four Stroke Outboards
Replaces Mercury 35-877761Q01, Mallory 9-57822, Sierra 18-7758
http://www.oilfilter-crossreference....R/35-822626Q04
http://www.oilfilter-crossreference....Y/35-877761K01