John Deere replacement engines are available directly from the John Deere company, with online ordering through their website at Deere.com. To buy mowers or large replacement parts such as an engine, a user needs to create an account prior to purchase. Financing is also available.
As of July 2015, replacement engines for all John Deere models from 40 hp to 600 hp are available on the website. John Deere replacement engines are also available via third-party websites, such as SmallEngineWarehouse.com. Users can order directly from the site or by phone. Used and new replacement engines are also available from resale auction sites such as eBay; however, inventory frequently changes.