... 4JA1, 4JB1 etc 2.high quality,competetive price OIL PUMP FOR ISUZUWe can offer oil pump for Isuzu engine, like 4JA1, 4JB1 ... RMB.The main products are piston ,hydraulic gear pump,and oil pump.The yearly capicity are separately five millon pcs,six ... used on the autombile,heavy-duty truck,electric generating set,boats,agriculture machinery,transport machinery,engineering plant.They are sold to more than 20 ...