Hydro-Gear
Engine & Drivetrain

Model #321-0510 Hydro-Gear hydro-gear transaxle

Here are the diagrams and repair parts for Hydro-Gear 321-0510 hydro-gear transaxle, as well as links to manuals and error code tables, if available.


There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Save to my profile

Showing 10 of 96 parts

Lawn Tractor Brake Friction Wedge

#81

Hydro transaxle Diagram

$18.90

In Stock

Lawn Tractor Transaxle Case

#3

Hydro transaxle Diagram

$109.27 | 
42% OFF MSRP:$190.00

In Stock

Lawn Tractor Transaxle Side Housing

#2

Hydro transaxle Diagram

$204.10 | 
15% OFF MSRP:$240.00

In Stock

Gear Assembly

#39

Hydro transaxle Diagram

Gear assembly

Part #150809
This item is not returnable
$2.16

In Stock

Deflector #5

#107

Hydro transaxle Diagram

Deflector #5

Part #170432
This item is not returnable
$3.99 | 
5% OFF MSRP:$4.20

In Stock

Material Gasket

#6

Hydro transaxle Diagram

Material gasket

Part #178322
$76.42

In Stock

Expansion Hose

#85

Hydro transaxle Diagram

Expansion hose

Part #170426
This item is not returnable
$7.33

In Stock

Lawn Tractor Brake Compression Spring

#71

Hydro transaxle Diagram

Lawn tractor brake compression spring

Part #583001401
?
Manufacturer substitution
This part replaces 170417. Substitute parts can look different from the original.
This part replaces 170417
This item is not returnable
$7.18

Back Order

Lawn Tractor Spacer

#65

Hydro transaxle Diagram

Lawn tractor spacer

Part #583001201
?
Manufacturer substitution
This part replaces 170411. Substitute parts can look different from the original.
This part replaces 170411
This item is not returnable
$4.19

In Stock

Throttle Bearing

#19

Hydro transaxle Diagram

Throttle bearing

Part #532150771
?
Manufacturer substitution
This part replaces 173159. Substitute parts can look different from the original.
This part replaces 173159
$22.02 | 
12% OFF MSRP:$25.00

In Stock