Iimpompo zesitofu samafutha 320-2512 zinokwahlulwa ikakhulu zibe ziindidi ezintathu: impompo yesitofu se-plunger, i-fuel injection pump-injector kunye ne-rotor distribution fuel fuel pump. Phakathi kwabo, i-plunger fuel injection pump inembali ende kwaye isetyenziswa kakhulu ngokuthembeka okuphezulu;