Tuff Torq K66AP transaxle (series photo) Click to zoom

Tuff Torq 7A632084780 K66AP Transaxle

MPN 7A632084780

Replaces Simplicity / Briggs & Stratton 1755100YP

Free shippingIn stockParts

Overview

Genuine, brand-new Tuff Torq 7A632084780 (K66AP) hydrostatic transaxle from the Tuff Torq K62/K66 family. Free shipping to the lower 48 states.

Part details

Tuff Torq part # 7A632084780
Replaces OEM # Simplicity / Briggs & Stratton 1755100YP
Model K66AP

Tuff Torq K66 series specifications

Application Yard Tractor; Estate Tractor; Light-Duty Garden Tractor
Reduction ratio 37.22:1; 22.19:1
Rated axle torque 37.22:1 = 420 Nm (310 lb-ft); 22.19:1 = 250 Nm (185 lb-ft)
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.

Fits these machines

Listed by parts dealers for this part number, its OEM number or its Tuff Torq model code. Please confirm with the number on your unit's label. This unit changed by serial number, so send us your transaxle label before ordering.

  • Simplicity: Conquest 52" garden tractor 27hp 2691128-00, Conquest 25hp Hydro 2WD w/PS, 52" fab deck 2691370-00, Conquest 52" garden tractor 25hp 2691471-00, Conquest 25hp Hydro 2WD w/PS, 52" 2691223-00, Conquest 50" garden tractor 25hp 2691338-03
  • Massey Ferguson (Simplicity-built): MF2700 25hp Hydro 2WD w/PS, 50" deck 2691365-00

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 K66AP) and the 11-digit part number. Match 7A632084780 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. 7A632084780 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.