DB Electrical GFD6001 7 Volt Regulator For Ford Tractor Two Unit/B Circuit/Positive Ground/501 600 601 701 800 1800 2000 2030 2120 2130 4000 4cyl/4030 4040 4120/ FAG10505A, GR277 100% New aftermarket unit built to meet OEM specifications 1-year warranty protects you after your purchase Factory direct pricing with no middleman markup delivers exceptional value