Since 1976 Portland Tractor Inc. has been a leading supplier of rebuilt and used/salvage heavy machinery parts, components, and attachments, specializing in Caterpillar parts. We store over 25,000 different parts and 100,000+ quality parts and attachments in inventory in our 60,000 sq foot warehouse facility. Our experienced team of mechanics and welders inspect all the parts to ensure top-notch quality that will save you money and keep your machine running.