John Deere Transmission – MIA12566

Overview

• Manufacturer: John Deere
• Part: MIA12566 (K46BD Transaxle)
• What it is: Hydrostatic transaxle drive assembly with an integrated differential and brake, designed as a direct-fit replacement for select John Deere rear-drive tractors and lawn tractors.
• Primary use: Provides forward/reverse propulsion with hydraulic drive for mowing and yard maintenance tasks on compatible John Deere models.

Key Features

• Part Number: MIA12566 (K46BD Transaxle)
• Type of machine suitable for: John Deere riding lawn tractors in the X300R/X305R/X350R family (direct-fit replacement).
• Installation tips:
  • Pre-filled with hydraulic oil and vented for straightforward installation.
  • Shaft diameter: 19.05 mm; Keyway width: 4.76 mm; Shaft hol