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16413297-1-M-Husky-721-04232-Oil Seal
Part Location Diagram of 721-04232 Husky Oil Seal
See part E13 in the diagram
( Grid squares measure 1x1 inch )
16413297-1-S-Husky-721-04232-Oil Seal 16413297-2-S-Husky-721-04232-Oil Seal 16413297-3-S-Husky-721-04232-Oil Seal Part Location Diagram of 721-04232 Husky Oil Seal
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Oil Seal 721-04232

 Fits your 21AA40M8700!
$ Price Match
OEM badge Official OEM
$ 25.55
  Special Order
 Fits your 21AA40M8700!
PartSelect Number PS16413297
Manufacturer Part Number 721-04232
Manufactured by Husky for Troy-Bilt, Yard Machines, MTD, Husky

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Product Description

Oil Seal Specifications

This high-quality component is made for use with walk-behind rotor tillers. It is an authentic oil seal which is supplied by the original equipment manufacturer. This item helps to provide a tight seal for the ball bearing and the transmission shaft. Over time it may wear out and begin to crack eventually requiring a replacement to prevent oil leaks. For the exact location and the correct installation check the diagrams of your model. This high-quality oil seal is made of a durable rubber material with a metal casing and is sold as an individual component. You will need wrench set and a tool to pull off the old seal when performing this repair.
How Buying OEM Parts Can Save You Time and Money

How Buying OEM Parts Can Save You Time and Money

Why buy the real thing?

OEM stands for Original Equipment Manufacturer. Simply put, this means that the company who made your appliance is also supplying the replacement part for it.

  • OEM from PartSelect
  • Genuine brand name
  • Guaranteed to fit
  • Superior quality and durability
  • 1 year warranty
  • Generic
  • Unknown manufacturer
  • No fit guarantee
  • Inconsistent quality and lifespan
  • Limited warranty and support
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Troubleshooting
This part works with the following products:
  • Tiller
Part# 721-04232 replaces these:
721-04232
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Questions and Answers

Ask our experts a question about this part and we'll get back to you as soon as possible!

1 question answered by our experts.
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RICHARD
March 11, 2026
Transmission leak. What to buy to fix/replace and does it come with instructions
For model number 21AE492K766
PartSelect logo
Hi Richard, Thank you for your question. If the transmission is leaking, you will need to replace the oil seals. The part numbers for the oil seals are 721-04232 and 921-04030. We hope this helps!

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Related Parts:
Oil Seal (OD 1- 3/4
$17.40

  Special Order
  • 1
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Model Cross Reference
This part works with the following models:
PartSelect Number: PS16413297
Manufacturer Part Number: 721-04232
Brand
Model Number
Description
Troy-Bilt
21A-492R766
Tiller - Pony
Troy-Bilt
21A-492RB66
Tiller - 21a-492rb66 Pony (2023)
Troy-Bilt
21A-495B766
Tiller - Proline Frt
Troy-Bilt
21A-692R766
Tiller - Pony
Troy-Bilt
21A-695B766
Tiller - Pro-Line Frt
Troy-Bilt
21A-70M8711
Tiller - Bronco Axis
Troy-Bilt
21A-70M8766
Tiller - Bronco Axis
Yard Machines
21AA404B000
Tiller - Walk Behind Tiller
Husky
21AA404B031
Tiller - Tiller
Yard Machines
21AA404B052
Tiller - Tiller
MTD
21AA404D229
Tiller - Walk Behind Tiller
Husky
21AA404D231
Tiller - Tiller
MTD
21AA404D299
Tiller - Tiller
MTD
21AA40M1000
Tiller - Walk Behind Tiller
MTD
21AA40M1029
Tiller - Walk Behind Tiller
Husky
21AA40M1031
Tiller - Tiller
Yard Machines
21AA40M1052
Tiller - Walk Behind Tiller
Yard Machines
21AA40M7752
Tiller - Tiller
Yard Machines
21AA40M8700
Tiller - Tiller
MTD
21AB40M1099
Tiller - Tiller
MTD
21AB40M7799
Tiller - Tiller
Troy-Bilt
21AE492K766
Tiller - Pony Es
Troy-Bilt
21AE692K766
Tiller - Pony Es
Troy-Bilt
21B-34M8711
Tiller - Colt Ft
Troy-Bilt
21C-644A211
Tiller - Bronco RotoTiller
Troy-Bilt
21C-644A266
Tiller - Bronco RotoTiller
Troy-Bilt
21C-644D211
Tiller - Bronco CRT Roto-Tiller
Troy-Bilt
21C-644D266
Tiller - Bronco CRT Roto-Tiller
Troy-Bilt
21C-64M1011
Tiller - Bronco CRT Roto-Tiller
Troy-Bilt
21C-64M1066
Tiller - Bronco CRT Roto-Tiller
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Customer Service Representative

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1-866-319-8402 Monday to Saturday
8am - 8pm EST

Contact Customer Service
Oil Seal
$ 25.55
  Special Order
✖
Stock Status
 In Stock

Item is in stock and is estimated to be delivered in 2-3 business days via Standard Shipping.

 On Order

Item is not in stock and usually ships 3-5 business days from the time you place your order.

 Special Order

Item is not in stock and usually ships 10-15 business days from the time you place your order.

 NLA - No Longer Available

This item is no longer being made by the manufacturer, and cannot be added to your shopping cart.