Tuff Torq 187Q0099050 Repair Kit (K58H)JD
Mfr # 187Q0099050
Item # GD-187Q0099050
In stock · Free shipping
$284.52/ each$324.64
Genuine Tuff Torq · Sold & shipped by RFQQQ
Tuff Torq K58 Transaxles & Parts
The K58 is the strongest transaxle in Tuff Torq's residential line: steel gears, 1-inch axles, 217 lb-ft of axle torque and 23-inch tire support. It's in estate and small garden tractors, including John Deere X300-series models (for example AM11860 / MIA11860). Genuine Tuff Torq, with free shipping on orders $100 and up.
- Free shipping on transaxles & kits (lower 48)
- Low Price Guarantee: we beat any advertised price by 5%
- Ships from stock, 1–2 business days
K58: repair it or replace it?
Hydrostatic K58 problems come in a few patterns. Match yours to decide between a repair kit, a seal kit or a new unit.
| What it's doing | What's usually wrong | Kit or unit? |
|---|---|---|
| Fine when cold, weak or stalls on hills once warm | Worn pump/motor blocks or center case, or old, thin oil | Repair kit if the oil is clean and hours are moderate; new unit if the oil is dark or has metal in it |
| Won't move, engine runs fine | Bypass/tow valve left open, broken belt or pulley, or a failed internal part | Check the bypass lever and belt first. Internal failure usually means a new unit |
| Whining or grinding under load | Gear or differential damage, often from running low on oil | New unit. Gear damage spreads metal through the whole unit |
| Oil leaking at the axles or input shaft | Worn axle or input-shaft seals, or a leaking case joint | Seal kit if caught early; top up the oil and listen for gear noise |
| Creeps in neutral or won't return to neutral | Control arm / return mechanism out of adjustment or worn springs | Adjust neutral first; replace return springs or arm if worn |
Not sure? Send us the model, the 11-digit part number from the label and what it's doing. We'll tell you honestly whether a kit will fix it, usually the same business day. Ask through the Part Finder.
Complete K58 transaxles
Match the model code and part number on your transaxle's white barcode tag. Model codes are not interchangeable (a K46BT does not replace a K46AC). Prefilled units ship with Tuff Tech fluid already in them.
K58R
787Q0024100Replaces: Toro 126-2814$945.25
K58M
787Q0024020Replaces: John Deere MIA11860, John Deere AM132724; supersedes 787Q0024000$945.25
K58W
787Q0024140Replaces: John Deere AUC15092, John Deere MIA12579, John Deere AUC11465; supersedes 787Q0024121, 787Q0024120$997.50
K58V
787Q0024160Replaces: John Deere AUC15094; supersedes 787Q0024080$1,187.50
K58AA
787Q0024130$1,021.25
787Q0024082 K58H MY 18 Transaxle JD
787Q0024082$1,060.19
787Q0024031 K58N MY 18TRANSAXLE JD
787Q0024031$803.36
787Q0024121 K58M MY18 Transaxle JD
787Q0024121$892.62
787Q0024111 K58Q My 18 Transaxle JD
787Q0024111$1,038.16
K58AC
787Q0024180$914.94
K58Y
787Q0024150Replaces: John Deere MIA11861; supersedes 787Q0024010$1,011.75Don't see your number? We stock the full Tuff Torq line through our distributor. Send us the numbers off your tag and we'll quote the exact unit, usually within the hour.
Use the part finder
K58 repair kits & components
Kits are matched by model and serial number (Tuff Torq changed internals within the same model code). Model letters below come from Tuff Torq's kit names. When in doubt, send us the label and we'll confirm.
| Kit / part | Fits | Notes |
|---|---|---|
| 187Q0099000 | K58A, K58B | Repair kit |
| 187Q0099010 | K58H | Repair kit |
| 187Q0099203 | K58 | Seal kit |
| 187Q0099210 | K58H | Seal kit |
| 187Q0099242 | K58 (John Deere units) | Seal kit |
| 187Q0524870 | K58 | Center case AA; order with the repair kit |
| 187Q0399940 | K58 | Drain bolt kit |
Tuff Torq 187Q0099091 Repair Kit
Mfr # 187Q0099091
Item # GD-187Q0099091
In stock · Free shipping
$352.85/ each$402.62
Tuff Torq 187Q0099060 Repair Kit (K58G)
Mfr # 187Q0099060
Item # GD-187Q0099060
In stock · Free shipping
$288.44/ each$329.64
Tuff Torq 187Q0099063 Repair Kit (K58G)
Mfr # 187Q0099063
Item # GD-187Q0099063
In stock · Free shipping
$359.52/ each$410.88
Tuff Torq 187Q0099062 Repair Kit (K58G)
Mfr # 187Q0099062
Item # GD-187Q0099062
In stock · Free shipping
$289.03/ each$330.32
Tuff Torq 187Q0099202 Seal Kit (K58A & B)
Mfr # 187Q0099202
Item # GD-187Q0099202
In stock
$32.59/ each$37.24
Tuff Torq 187Q0099200 Seal Kit (K58A & B)
Mfr # 187Q0099200
Item # GD-187Q0099200
In stock
$31.12/ each$35.57
Tuff Torq 187Q0099220 Seal Kit K58A & Bjd
Mfr # 187Q0099220
Item # GD-187Q0099220
In stock
$35.48/ each$40.47
Tuff Torq 187Q0099241 Seal Kit K58JD
Mfr # 187Q0099241
Item # GD-187Q0099241
In stock
$37.02/ each$42.23
Tuff Torq 187Q0099240 Seal Kit (K58A & B)jd
Mfr # 187Q0099240
Item # GD-187Q0099240
In stock
$34.60/ each$39.54
Tuff Torq 187Q0099201 Seal Kit (K58A & B)
Mfr # 187Q0099201
Item # GD-187Q0099201
In stock
$31.99/ each$36.56
Tuff Torq 187Q0099230 Seal Kit (K58H)JD
Mfr # 187Q0099230
Item # GD-187Q0099230
In stock
$48.48/ each$55.40
Tuff Torq 187Q0099210 Seal Kit K58H
Mfr # 187Q0099210
Item # GD-187Q0099210
In stock · Free shipping
$109.43/ each$127.99
Tuff Torq 187Q0099000 Repair Kit K58 A & B
Mfr # 187Q0099000
Item # GD-187Q0099000
In stock · Free shipping
$391.72/ each$458.16
Tuff Torq 187Q0099242 Seal Kit (K58) John Deere
Mfr # 187Q0099242
Item # GD-187Q0099242
In stock
$45.67/ each$53.42
Tuff Torq 187Q0099010 Repair Kit K58H
Mfr # 187Q0099010
Item # GD-187Q0099010
In stock · Free shipping
$433.82/ each$507.39
Tuff Torq 187Q0099203 Seal Kit K58
Mfr # 187Q0099203
Item # GD-187Q0099203
In stock
$94.46/ each$110.48
Fans, pulleys, axles, filters & oil
Tuff Torq 787Q0024030 K58N
Mfr # 787Q0024030
Item # GD-787Q0024030
In stock · Free shipping
$803.36/ each$918.12
Tuff Torq 787Q0024091 K58G
Mfr # 787Q0024091
Item # GD-787Q0024091
In stock · Free shipping
$1,119.40/ each$1,277.31
Tuff Torq 787Q0024090 K58G
Mfr # 787Q0024090
Item # GD-787Q0024090
In stock · Free shipping
$795.85/ each$909.54
Tuff Torq 787Q0024170 K58Z
Mfr # 787Q0024170
Item # GD-787Q0024170
In stock · Free shipping
$1,278.11/ each$1,458.39
Tuff Torq 187Q0524870 Center Case AA (order with repair kit)
Mfr # 187Q0524870
Item # GD-TUF187Q0524870
In stock · Free shipping
$222.15/ each
How to read your Tuff Torq tag
There's a white barcode label on the back of the transaxle (some tractors repeat it under the seat). It carries three numbers:
- Top left: the Tuff Torq part number. 11 characters, e.g. 7A646084181. This identifies the complete unit. Order a replacement by this number.
- Top right: the serial number. Repair kits and internal parts are chosen by serial, because Tuff Torq changed internals within the same model code.
- Bottom right: the OEM part number (John Deere AM/MIA, Husqvarna 5324xxxxx, MTD/Cub Cadet 618-xxxxx). If the top numbers are unreadable, this one gets us there too.
No tag at all? Your tractor's parts manual lists the transaxle under the OEM number, and our finder accepts the tractor model as a last resort.
Enter my numbers Full identification guide →7A646084181Tuff Torq part no.1803-2 07451Serial no.
K46BTModel532 43 83-54OEM part no.
K58 specifications & compatibility
| K58 | |
|---|---|
| Application | Estate tractors, small garden tractors, heavier lawn tractors |
| Reduction ratio | 31.44:1 |
| Rated axle torque | 294 Nm (217 lb-ft) |
| Max tire | 584 mm (23 in) |
| Pump / motor | 7/10 cc/rev |
| Axle shaft | 25.4 mm (1.0 in) |
| Gears | Heat-treated Steel Gears |
| Dry weight | 15.3 kg (33.7 lb) |
K58 questions we get every week
My tractor says John Deere / Husqvarna / Cub Cadet, not Tuff Torq. Is this the right place?
Yes. The K58 in your machine is made by Tuff Torq; the mower brand just gives it its own part number. Send us that OEM number or the Tuff Torq number from the transaxle's ID label and we'll match it.
Which Tuff Torq transaxle fits my John Deere, Husqvarna, Craftsman or Cub Cadet?
Look up your mower by brand and model: John Deere · Husqvarna & Craftsman · Cub Cadet, MTD & Troy-Bilt · Simplicity, Snapper & Massey Ferguson · Dixie Chopper, Toro & Exmark. Each table shows the Tuff Torq unit your model uses and the OEM number it replaces.
Is the K58 an upgrade over the K46?
Yes, in strength: steel gears, 1-inch axles and about 25% more axle torque. It isn't a bolt-in swap for a K46 tractor, though. Order the K58 only for machines built with one.
What oil does a K58 take?
Tuff Torq recommends its Tuff Tech hydrostatic drive fluid (187Q0899000, 3 L). Never use ATF. If your machine's manual names a different oil, follow the manual.
Where do I find the Tuff Torq part number?
On the ID label on the transaxle case, usually on top or on the side near the input pulley. It shows the model (for example K57R) and an 11-digit part number (for example 7A646084020). Our part number guide shows where to look on each series.
More Tuff Torq
K46 Transaxles, Repair Kits & Parts
K57 Transaxles & Repair Kits
K62 & K66 Transaxles, Repair Kits & Parts
K71 & K72 Transaxles & Parts
T40 & TL-200 Transaxles & Parts
TZ & TZT Zero-Turn Transaxles & Parts
KPL & DUP Pumps & Pump Parts
Repair Kits (All Models)
Oil, Filters & Oil Change KitsQuestions? Call (646) 666-7225, Mon–Fri 7:00am–6:00pm ET, or email support@rfqqq.com.