Cub Cadet 1641 Mower, Lawn and Garden Tractor

You will need to use the drive adapter and muffler off of your original engine. You may have to use the oil filter bracket as well. The wiring could be slightly different, and if so, you can use the wiring harness off of your old engine If you buy a 356447 engine you may have to use your flywheel fan and shrould as well.