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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

Oil Seal 721-04232

Manufactured by:
Husky
ERP Number:
ERP16413297
Part Number:
721-04232
Original Equipment Manufacturer ?
$25.86
★★★★★
★★★★★
4 Reviews
Special Order

A Bit Difficult 

1- 2 hours 

(8 rated repairs) ?

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Description Frequently Purchased Together Troubleshooting Reviews Questions & Answers Repair Instructions Model Cross Reference

Product Description

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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.

Frequently Purchased Together

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Ball Bearing
$34.21
Special Order
Ring-retainer
$10.77
In Stock

Troubleshooting

This part works with the following brands:
  • Troy-Bilt
  • Yard Machines
  • MTD
  • Husky
This part works with the following products:
  • Tiller
Part# 721-04232 replaces these:
721-04232,
★

Customer Part Reviews

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5.0
Average Rating (out of 5):
★★★★★
★★★★★
(4 Reviews)
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★★★★★
★★★★★
easy repair
parts arrived in good condition. Screwed two screws into the old seal leaving enough of the head exposed to pry the seal out using a flat bar or claw hammer. installed new seal using a rubber mallet
Norm - July 27, 2019
Verified Purchase
★★★★★
★★★★★
Leaking oil tiller
New seals for my tiller, worked perfectly
Larry - November 12, 2019
Verified Purchase
★★★★★
★★★★★
Works great. No problems..
The seals were just what I needed. I was surprised at the speed in which they were shipped.
Guest - April 1, 2021
Verified Purchase
★★★★★
★★★★★
Guest - April 20, 2021
Verified Purchase

Questions & Answers

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  • 1
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Transmission leak. What to buy to fix/replace and does it come with instructions
RICHARD For model number 21AE492K766 - March 11, 2026

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!

eReplacementParts Team
March 25, 2026

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Related Parts:
Oil Seal (OD 1- 3/4
$17.61
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Customer Repair Instructions

All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.

A Bit Difficult 

1- 2 hours 

(8 rated repairs) ?
  • 1
Sort by:  
Sorry, we couldn't find any existing installation instruction that matched.

Oil seal failed around tire

eric from hudson, Wisconsin

4 of 4 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Pliers, Screw drivers
Parts Used:
721-04232
1. Remove tire pin and pull off tire
2. Most gear oil had leaked out, tipped on side to prevent more leakage
3. Remove old seal, used screw driver to pry out.
4. Lube and installed new seal, used PVC tube and wood block with hammer to install.
5. Put tire and pin back in and fill with correct gear oil to spec
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Leaking oil

Steve from SHELBYVILLE, Texas

4 of 4 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
1- 2 hours
Tools:
Screw drivers
Parts Used:
721-04232
Removed seals and replaced oil seals and added new oil.
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leaking transmission oil seals

Steve from Roswell, Georgia

3 of 3 people found this instruction helpful.
Difficulty Level:
Difficult
Total Repair Time:
More than 2 hours
Tools:
Nutdriver, Pliers, Screw drivers, Socket set, Wrench (Adjustable), Wrench set
Parts Used:
721-04232
Watched outstanding video provided by eReplacementParts on Youtube. TroyBilt Bronco tiller. Followed instructions exactly as shown.
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replace tiller tine seals

Donald from Stuart, Florida

2 of 2 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers, Socket set, Wrench set
Parts Used:
721-04232
1 remove tine retaining bolts from each tine set.
2 remove the tine sets.
3 use the screwdriver to lever the old seal out of the seal seat. This may require a small chisel be hammered between the seal and seal housing.be careful not to damage the seal seat housing
4 pry the old seal out
5 clean the seal seat housin g area and tine shafts. You may need to polish the shafts with fine sand paper.
6Lubricate the rubber area of the seal with oil. install the new seals by lightly tapping the seal into place with the hammer. tap in a circular pattern around the outer edge of the seal until fully seated.
replace the tines and tine retaining bolts.
Read less
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Axle seal leaked

Gayel from OREGON, Wisconsin

1 person found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
721-04232
Pried out old seal pressed new one in.
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All oil seals were leaking

Norman from Oro Valley, Arizona

1 person found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
1- 2 hours
Tools:
Pliers, Screw drivers, Socket set, Wrench set
Parts Used:
921-04229, 721-04232, 921-04030
Removed wheels and tunes.
Cleaned shafts.
Drove screws into seal and used screws to pull out seal.
Used pieces of pic pipe to tap new seals into place.
Replaced wheels and tines.
Fill transmission with oil.
Replaced cover gaskets.
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Wheel seals leaked.

Daniel from Goodlettsville, Tennessee

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Parts Used:
721-04232
1. Removed the wheels.
2. Inserted the screw into the old seal.
3. Placed the pry bar behind the screw head.
4. Removed the old seal.
5. Used a rubber mallet and a brass drift pin to seat the new seal in place.
6. Put the wheels back on.
7. Filled the transmission with the proper gear oil.
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I had an oil leak

Michael from Roaring Brook Township, Pennsylvania

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Nutdriver, Socket set
Parts Used:
921-04229, 721-04232
I removed the wheel and removed the old seal with a puller and installed a new seal and filled with oil.
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  • 1

Model Cross Reference

This part works with the following models:
ERP Number: ERP16413297
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
Oil Seal
$ 25.86
Special Order
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Stock Status
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