Control Unit Heater Knob 312810130280 for Fendt Farmer & Favorit TractorsControl Unit Heater Knob 312810130280 for Fendt Farmer & Favorit Tractors Made to OEM Specs to Provide a Direct Fitment & Easy Install! Manufactured with High Grade Materials by an Industry Leader Expedited International Shipping to the U. S. OEM Cross References: 312810130280 Fits Models: Fendt: Farmer 307 (type 307) Farmer 308 (type 308) Farmer 309 (type 309) Farmer 310 (type 310) Farmer 311 (type 311) Farmer 312 (type 312) Farmer 409 Farmer 410