Gear pump is part of the lower engine group on Lawnaire® ZTS Stand-On Aerators. Installed on the engine mounting plate and secured with 4 bolts.
Due to engineering standards, some parts are updated or changed and are assigned a new part number. Previous part numbers were 4171302 and 4173696. This part is the direct replacement.
WARNING: This product can expose you to chemicals including Lead and lead compounds, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov