John Deere 4520 Serial Numbers, Price, Reviews, Specs, Horsepower, Engine Oil Capacity, Attachments, History, Features & Pictures John Deere 4520 Price, Reviews, Specs: John Deere 4520 Row Crop Tractor is equipped with a John Deere turbocharged diesel 6-cylinder liquid-cooled inline 404 ci [6.6 L] engine, which delivers 107 hp (79.8 kW) power at rated rpm 2200. It was the … [Read more...] about John Deere 4520 Price, Specs, Reviews & Attachments