The function of the Head Rotor is to meter and deliver the metered fuel. Head Rotor are available in bore sizes of 9 mm to 12 mm. And part numbers of all renowned brands such as BOSCH, Zexel, Denso, Delphi, Ambac, Mico, Usha, Lucas-Cav, Diesel Kiki, Nippon-Denso, Motorpal, Lucas, Cummins,Yanmar, Doowon, Stanadyne, Caterpillar,Nippon Kiki, CC Diesel,7Diesel, Gamma Diesel, Diesel power,Omap Diesel, Mtu, Komatsu, Toyota, Susuki, Nissan, Mazda, Honda, Hino, LL Diesel etc.