Tuff Torq K46BN Hydrostatic Transmission – OEM Part Nos. 7A646084161, 7A646084162

This integrated hydrostatic transmission combines a pump and motor in one compact unit, delivering smooth, reliable power transfer for residential and commercial lawn care. Built with a die-cast aluminium housing and internal wet-disk brakes, the K46BN offers strength, safety, and long-lasting performance.

Pre-filled with oil for easy installation, this OEM transmission is a direct-fit replacement, restoring factory-level performance to your mower.

Key Features & Benefits:

• Integrated Hydrostatic Transaxle (IHT) design for smooth operation

• Die-cast aluminium case with hardened gears for strength and durability

• Internal wet-disk braking system for consistent, safe operation

• Compact design with the performance of larger transmissions

• Supplied pre-filled with oil for easier installation and setup

Specifications (K46BN Model):

• OEM Part Numbers: 7A646084161, 7A646084162, 522541401

• Housing: Aluminium die-cast

• Transmission Type: Hydrostatic drive with integrated pump and motor

• Torque Output: Up to 231 Nm (approximate under load)

• Internal braking system: Wet-disk

• Supplied ready to install

Fits Husqvarna Models:

• LGT2654

• YTH1542

• YTH1848

• YTH2042

• YTH2146

• YTH2454

• GTH2654

Applications:
Designed as a direct OEM replacement for Husqvarna ride-on mower transmissions. Perfect for restoring lost performance or repairing a failed unit.

OEM & Cross References:

• OEM Part No.: 7A646084161, 7A646084162, 522541401

• Replaces older K46 variants and Husqvarna-branded equivalents