MTD 921-04030 Oil Seal, .750" ID X 1.783" OD
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The purpose of the Oil Seal is to protect shaft and bearings from intake of dirt and debris, and prevent oil or grease from leaking out. Replacing a damaged oil seal can prevent the more consequential damage to the crankshaft and other parts of the engine. Improper assembly, excessive wear, poor lubrication, and contamination from debris can all damage the oil seal and require replacement. Be sure to adjust the oil seal tightness when installing to prevent leaks of rotating shafts.
$12.99
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21AA404B000 - Yard Machines Tiller (2009)
Transmission Assembly
21AA404B000 - Yard Machines Tiller (2010)
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21AA404B000 - Yard Machines Tiller (2011)
Transmission 400 Series
21AA404B031 - Huskee Tiller (2009) (Tractor Supply)
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21AA404B052 - Yard Machines Tiller (2009) (Stiga) (Walmart)
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21AA404D200 - Yard Machines Tiller (2012)
Transmission 21AA40X
21AA404D229 - Yard Machines Tiller (2009) (Home Depot)
Transmission Assembly
21AA404D229 - Yard Machines Tiller (2010) (Home Depot)
Transmission Assembly
21AA404D231 - Huskee Tiller (2009) (Tractor Supply)
Transmission Assembly
21AA404D231 - Huskee Tiller (2010) (Tractor Supply)
Transmission Assembly
21AA40M1000 - Yard Machines Tiller (2009)
Transmission Assembly
21AA40M1000 - Yard Machines Tiller (2010)
Transmission
21AA40M1000 - Yard Machines Tiller (2011)
Transmission 400 Series
21AA40M1000 - Yard Machines Tiller (2012)
Transmission 21AA40X
21AA40M1000 - Yard Machines Tiller (2013)
Transmission
21AA40M1029 - Yard Machines Tiller (2009) (Home Depot)
Transmission Assembly
21AA40M1029 - Yard Machines Tiller (2010) (Home Depot)
Transmission
21AA40M1029 - Yard Machines Tiller (2011) (Home Depot)
Transmission 400 Series
21AA40M1031 - Huskee Tiller (2010) (Tractor Supply)
Transmission
21AA40M1031 - Huskee Tiller (2011) (Tractor Supply)
Transmission 400 Series
21AA40M1052 - Yard Machines Tiller (2009) (Stiga) (Walmart)
Transmission Assembly
21AA40M1052 - Yard Machines Tiller (2010) (Stiga) (Walmart)
Transmission
21AA40M1052 - Yard Machines Tiller (2011) (Walmart)
Transmission 400 Series
21AA40M1052 - Yard Machines Tiller (2012)
Transmission 21AA40X
