The john deere 990 tractor comes equipped with a 3 point hitch system with a pto output this will allow you to connect a wide variety of attachments to this tractor as shown above we have hand picked a variety of implements based on the john deere 990 specs that we recommend and carry to fit this tractor. John deere 990 tractor attachments c2000 2018 tractordatatm notice every attempt is made to ensure the data listed is accurate. John deere 990 price reviews specs engine oil capacity serial numbers attachments history features pictures john deere 990 compact utility tractor was equipped with a yanmar 4tne84 diesel 4 cylinder liquid cooled 1217 ci 20 l engine which produces 404 hp 301 kw power at rated rpm 2700 john deere 990 compact utility tractor was featured with a yanmar 20l 4 cyl diesel engine . The attachments we offer are engineered to fit your john deere tractors 3 point hitch or front end loader yes we have john deere style loader hitch attachments too you get an equal or better quality attachment for your tractor without paying the huge markup from buying the brand name john deere at the dealership