We have added drop in equivalent hydraulic motors to replace White Drive Products series WM, WD, RS, HB, WS and RE. All of these motors are direct replacements for the White Drive Products part numbers shown on the website. Enter the White Drive Products part number in the search box and you will be directed to the item. All of the motors are high quality replacements with an 18 month warranty from date of shipment. These motors are priced competitively and include free UPS ground shipping.