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Oil Seal (OD 1- 3/4

Part Number: 921-04030

5 Reviews

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Questions & Answers

Repair Instructions

*This part replaces obsolete part #: 9617, GW-9617 and 721-04030.

Product Information

Description:

This is a genuine OEM sourced part that is intended to be used with tillers from Troy-Bilt, Yard Machines, MTD, and Cub Cadet. The oil seal is used to prevent leaks between the drive shaft and the transmission case assembly. This item is available as an individual replacement part.

Warning: California's Proposition 65

Frequently Purchased With

Wheel Shaft Oi..
$10.07

Oil Seal
$14.98

Oil Seal, Tine..
$18.22

Gasket, Housin..
$6.34

Gear-Worm
$154.28

Compatibility

This part is compatible with the following machines:

Troy-Bilt

Yard Machines

21AA404B000 (2010) Walk Behind Tiller
21AA404B000 (2011) Walk Behind Tiller
21AA40M1052 (2010) Walk Behind Tiller
21AA40M1052 (2011) Walk Behind Tiller
21AA404B052 (2009) Tiller
21AA404D200 (2012) Tiller
21AA40M7700 (2012) Tiller
21AA40M7752 (2012) Tiller

21AA40M7752 (2014) Tiller
21AA40M8700 (2014) Tiller
21AA40M7752 (2015) Tiller
21AA40M8700 (2015) Tiller
21AA40M7752 (2016) Tiller
400 (21AA40M8700)(2016) Tiller
21AA40M7752 (2017) Tiller
21AA40M8700 (2017) Tiller

MTD

21AA404D229 (2010) Walk Behind Tiller
21AA40M1000 (2010) Walk Behind Tiller
21AA40M1000 (2011) Walk Behind Tiller
21AA40M1029 (2010) Walk Behind Tiller
21AA40M1029 (2011) Walk Behind Tiller
21AA404D299 (247.29931)(2010) Tiller

21AB40M1099 (247.29930)(2010) Tiller
21AA404D299 (247.29931)(2011) Tiller
21AB40M1099 (247.29930)(2011) Tiller
21AA404D299 (247.29931)(2012) Tiller
21AB40M1099 (247.29930)(2012) Tiller
21AB40M7799 (247.299301)(2012) Tiller

Cub Cadet

RT45 (21AA404D209) (2012) 21AA404 Tiller
RT45 (21AA40M1010, 21AA40M1009, 21AA40M7710, 21AA40) (2012) 21AA40M Tiller
RT35 (21A-62M7710, 21A-62M7756) (2013) 21A-62M7 Tiller
RT45 (21AA40M7710) (2013) 21AA40M Tiller
RT35 (21A-62M8710, 21A-62M8756) (2014) 21A-62M8 Tiller
RT45 (21AA40M8710) (2014) 21AA40M8 Tiller
RT75 (21AC482R710) (2014) 21AC482R Tiller
RT35 (21A-62M8710) (2015) 21A-62M8 Tiller
RT45 (21AA40M8710) (2015) 21AA40M8 Tiller
RT75 (21AC482R710, 21AC482R709) (2015) 21AC482R Tiller
VT100 (21A-70M8710, 21A-70M8756, 21A-70M8709) (2015) 21A-70M87 Tiller
21A-62M8709 (2016) Rt 35 Tiller
21A-62M8710 (2016) Rt 35 Tiller

21A-62M8756 (2016) Rt 35 Tiller
21AA40M8710 (2016) Rt 45 Tiller
21AA40M8756 (2016) Rt 45 Tiller
21AC482R709 (2016) Rt-75 Tiller
21AC482R710 (2016) Rt-75 Tiller
Vertical Tine Tiller (21A-70M8756) (2016) Tiller
100 (21A-70M8710) (2016) Vt Tiller
21A-62M8709 (2017) Rt 35 Tiller
21A-62M8710 (2017) Rt 35 Tiller
21AA40M8710 (2017) Rt 45 Tiller
21AA40M8756 (2017) Rt 45 Tiller
21AC482R709 (2017) Rt-75 Tiller
21AC482R710 (2017) Rt-75 Tiller

Husky

21AA404B031 (2009) Tiller
21AA404D231 (2009) Tiller
21AA404D231 (2010) Tiller

21AA40M1031 (2010) Tiller
21AA40M1031 (2011) Tiller

Expand the 150+ compatible machines

Questions & Answers

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Are you sure this seal has an OD of 1&3/4 inches? It might be 1&1/4 inches? # 921-04030

mark asked on 2022-02-10

Hi Mark, Thank you for your question. The outer diameter would be 1-3/4 inches. If you would like to place an order for it, customer service is open 7 days a week and anyone will be happy to assist you. Please feel free to give us a call. We look forward to hearing from you!

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Repair Instructions: Submitted by Customers Like You

Tool Type:

Cultivator

Parts Used:

Oil Seal (OD 1- 3/4 - 921-04030

Repair Difficulty:

Easy

Time Spent Repairing:

15-30 minutes

Tools Used:

Socket set, Wrench Set, Impact gun

Gear box seal was leaking,

Put on jack stands, removed wheels, removed belt covers, removed bolt and pulley cleaned gearbox with break cleaner, permatexed the seal and drove it in place, reinstalled everything else in reverse

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1 of 2 people found this instruction helpful

Tool Type:

Cultivator

Parts Used:

Oil Seal (OD 1- 3/4 - 921-04030

Bearing, Tapered Roller (With Race) - 941-0107

Washer-Flat 1.50x - 736-04308

Washer Flat 1.50X - 736-04305

Gasket-Transmission Cover - GW-1123

Gasket-Front Bearing Cap - GW-1124-2099

Shim-Dog Clutch, 1/16"(.62") Thick - 736-04187

Flat Washer, 1.5 X 1.75 X .03 - 736-04307

Repair Difficulty:

Hard

Time Spent Repairing:

More than 2 hours

Tools Used:

Screwdriver, Pliers, Socket set, Wrench Set, Adjustable Wrench

rear oil seal on rototiller failed, lost lubrication and roller bearings were dmaged.

removed tiller portion from engine section, removed tiller tines and rear differential, replaced diferential roller bearings and tiller oil seals, reassembled differential, replaced forward tiller shaft roller bearing and oil seal, reassembled full tiller assembly, reattached tiller to engine section, went to my garden and rototilled my brains out.

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Tool Type:

Cultivator

Parts Used:

Oil Seal (OD 1- 3/4 - 921-04030

Gasket, Housing Cover - 921-04229

Oil Seal - 721-04232

Repair Difficulty:

Medium

Time Spent Repairing:

1-2 hours

Tools Used:

Screwdriver, Pliers, Power Drill, Socket set, Wrench Set, Seal puller

All oil seals were leaking

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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Reviews

Average Rating (out of 5):

5 Reviews

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Everything went as planned thanks for your promptness shipping parts out

Working as intended

Guest - May 27, 2021 Verified Purchase

I have the parts. Just need to review how to get everything back together and go for it.

everything arrived in great condition. It all looks good. Now I have to put the tiller unit back together.

Guest - May 2, 2020 Verified Purchase

Fit and arrived quick

Good replacement. Fit right and came on time. They were very helpful when I ordered wrong.

Rockie - April 7, 2020 Verified Purchase

Quick service!

Good service!!

Kevin - August 8, 2019 Verified Purchase

Wrong part

Didn't fit

Guest - May 20, 2019 Verified Purchase

Verified Purchase

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Product Information

Oil Seal (OD 1- 3/​​4

Oil Seal (OD 1- 3/4