The I1046 is a zero turn tractor. Lt 1046 is not.
www.cubcadet.com for parts or a cub cadet dealer. The old number but is the same blade is 742-XXXXX.
To replace the transmission fan on a Cadet i1046, first ensure the mower is turned off and disconnected from the power source. Remove the engine cover to access the transmission area, then detach the old fan by unscrewing any retaining screws or bolts. Install the new fan by securing it in place and reassembling the engine cover. Finally, reconnect the power source and test the mower to ensure proper operation.