Overview
Genuine, brand-new Tuff Torq 787Q0584590 (K664K) hydrostatic transaxle from the Tuff Torq K62/K66 family. Free shipping to the lower 48 states.
Part details
| Tuff Torq part # | 787Q0584590 |
|---|---|
| Model | K664K |
| Used on | Briggs & Stratton |
Tuff Torq K664 series specifications
| Application | 4WD Tractors; Articulating Mowers; Ride-On Mowers; Self-Propelled Industrial Machines |
|---|---|
| Reduction ratio | 37.22:1; 22.19:1 |
| Rated axle torque | 37.22:1 = 420 Nm (310 ft-lb); 22.19:1 = 250 Nm (185 ft-lb) |
| Pump / motor displacement | 10/10 cc/rev |
| Axle shaft | 25.4 mm (1.0 in) |
| Brake | Internal Wet Disc |
| Dry weight | 23 kg (50.7 lb) |
Series data from Tuff Torq. Ratio, pulley, fan and control-arm setup vary by model; match your part number.
Make sure it fits
Every Tuff Torq unit has an ID label on the case showing the model (like K664K) and the 11-digit part number. Match 787Q0584590 to that label, or to the OEM number in your mower's parts list. Can't read the label? See How to find your Tuff Torq part number, or send us a photo through the Part Finder and we'll confirm the match before you buy.
More K62/K66 units, repair kits and parts: Tuff Torq K62/K66 hub · All Tuff Torq
FAQ
Is this a genuine Tuff Torq part?
Yes. 787Q0584590 is new, genuine Tuff Torq, sold under Tuff Torq's own part number. It is not a rebuilt, used or aftermarket unit.
Will it fit my mower?
Fit depends on your exact model and serial number. Match the part number on your unit's label, or send us your mower details and we'll confirm for free.
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Tuff Torq · 787Q0584590
Tuff Torq 787Q0584590 K664K Transaxle
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