Lester Originally Called This the 13415. However, They Also Called OEM No. A5T07092 the 13415. These are the Same Unit, Except for the Pulley (S-4G for the A5T07091 and A5TA0791 or S-3G for the A5T07092). The Pulleys Will Transfer, as Both Units are 17mm Shaft. The 13336 is the 17mm Shaft Version of the 15mm Shaft 13213. The 13336 Will Replace the 13213, if Pulley is Supplied With the Unit.