Tuff Torq K57R transaxle (series photo) Click to zoom

Tuff Torq 7A646084020 K57R Transaxle

MPN 7A646084020

Replaces Husqvarna 532437814, Husqvarna 437814

Free shippingIn stockParts

Overview

Genuine, brand-new Tuff Torq 7A646084020 (K57R) hydrostatic transaxle from the Tuff Torq K57 family. Free shipping to the lower 48 states.

Part details

Tuff Torq part # 7A646084020
Replaces OEM # Husqvarna 532437814, Husqvarna 437814
Model K57R

Tuff Torq K57 series specifications

Application Rear Engine Riding Mower; Lawn Tractors; 4WD Tractors and Mowers; Ride-on Mowers; Articulating Mowers; Estate Tractors
Reduction ratio 31.68:1; 28.04:1; 21.53:1
Rated axle torque 31.68:1 = 255 Nm (188 lb-ft); 28.04:1 = 235.4 Nm (174 lb-ft); 21.53:1 = 180.7 Nm (133 lb-ft)
Pump / motor displacement 7/10 cc/rev
Axle shaft 19.05 mm (0.75 in)
Brake Internal Wet Disc
Dry weight 12.5 kg (27.6 lb)

Series data from Tuff Torq. Ratio, pulley, fan and control-arm setup vary by model; match your part number.

Fits these machines

Listed by parts dealers for this part number or its OEM number. Please confirm with the number on your unit's label.

  • Husqvarna: YTH24V48 (2018-)

Mower makers sometimes switch transaxles mid-production, so serial number matters. Not on the list? Send us your model and serial and we'll check.

Make sure it fits

Every Tuff Torq unit has an ID label on the case showing the model (like K57R) and the 11-digit part number. Match 7A646084020 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 K57 units, repair kits and parts: Tuff Torq K57 hub · All Tuff Torq

FAQ

Is this a genuine Tuff Torq part?

Yes. 7A646084020 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.