For sale is one replacement fuel pump elements/ plunger for increasing horsepower in Kubota D722 D662 D782 D902 D905 D1105 Z602 D600. These are 6mm in diameter, stock D1105's are 5.5 mm so this should be around 30% more fuel. Stock for D722, D600 and D662's are 5mm so this is roughly 60% more fuel over stock for those. One pc needed per cylinder.