New OEM Tuff Torq replacement hydrostatic transmission for the left side when sitting on mower. See compatibility list below or contact us with model &  serial number if you are unsure of compatibility. Replaces John Deere part numbers MIA12728, AUC15341 and AM140313. Also replaces obsolete Tuff Torq transmission models 787Q0824000 and 787Q0824001. This drop-in replacement comes pre-filled with oil.

COMPATIBILITY:

EZtrak Z425 serial number 130001 and up

EZtrak Z435

EZtrak Z445 serial number 130001 and up

EZtrak Z465 serial number 130001 and up

ZTrak Z525E

ZTrak Z535M

ZTrak Z540M