Retails online for between $51.50 and $69 before taxes and/or shipping.

This is an O.E.M. Authorized part.  Fits various mtd models.  
OEM part number 638-04003ap.  This is a mtd replacement part.
 

MTD Replacement Part LH Axle Assembly

SKU: 211214
C$22.00Price
GST/HST Included