Lawn & Garden Tractor


Manufacturer ID: K46

The K46 is the most popular integrated hydrostatic transaxle (IHT) in the world…and for good reason.  This power unit has all the features and performance of much larger and more expensive transaxles, all at a very affordable cost and in a small and purpose-focused design.  This transaxle has a proven track record in a vast array of applications in all kinds of conditions.  We are confident that the K46 is a great choice for your next riding mower or lawn tractor project!


  • Patented L.O.G.I.C. case design for easy installation, reliability and serviceability.

  • Internal wet disk brake system

  • Reversible output/control lever operating logic for application optimization.

  • Smooth operation for either foot or hand control system.


Specification Value Units
Application Rear Engine Riding Mower
Lawn Tractor
Reduction Ratio 28.04:1
Axle Torque (Rated) 28.04:1 = 231.4 (171)
21.53:1 = 177.7 (131)
Nm (lb-ft)
Max. Tire Diameter 28.04:1 = 508 (20)
21.53:1 = 457 (18)
mm (in)
Brake Capacity 28.04:1 = 330 (243)
21.53:1 = 253 (187)
Nm (lb-ft) *@ 350 N (79 lb) Brake arm force
Displacement (Pump/Motor) 7/10 cc/rev
Max. Input Speed 3,000 rpm
Axle Shaft Size 19.05 (0.75) mm (in)
Weight (dry) 12.5 (27.6) kg (lb)
Brake Type Internal Wet Disc
Housing (Case) Die-Cast Aluminum
Gears Heat-treated Powder Metal
Differential Automotive-type Bevel Gears
Speed Control System Foot Control: Dampening system or external shock absorber available
Hand Control: External friction pack and lever avalailable
Bypass valve (Roll Release) Standard
Hydraulic Fluid Type Proprietary Tuff Torq Tuff Tech drive fluid recommended. (Contact OEM for other options)

My Tuff Torq Login