The Bolt-flanged,6x12 is the cheapest item from this partsfiche.
The Fuel Injection is made up of components including this Control Unit-electron which is the most expensive.
Parts such as the Fuel Injection: Cap, O Ring,8mm, Sensor,pressure, Seal are included in the Kaf620-rafa Mule4010 2010 Usa / Trans4x4 Fuel Injection parts fiche.