Buy a used tractor radiator by visiting eBay.com, iNeedParts.com or AllPartsStore.com; searching for a radiator compatible with your tractor and following the site's instructions for completing the purchase, as of 2015. Alternately, purchase a salvage tractor from sites such as Fastline.com instead of buying a separate radiator.
The auction site eBay.com features tractor radiators in a wide range of conditions, including listings for new models. Use the condition filtering options to ensure you only see listings for used radiators, and refine your search according to factors such as price, location or tractor model. Some listings are available for purchase under direct payment methods in which you don't need to bid or wait for the sale to end.
When shopping for used radiators on iNeedParts.com, use the search tool to locate the specific item, or navigate through the categories to find a list of all tractor models for which the site currently sells radiators. Click on the radiator model number in each section to view pricing and shipment details.
AllPartsStore.com lists its used tractor radiators under the Cooling Systems section according to the tractor brand. Choose from the available model numbers to see if the radiator is in stock, and see purchase options, including different parts models.
If purchasing an entire salvage tractor to use or dismantle, read each listing to determine the unit's parts before making the purchase.