... .Wet-type cylinder liner,a head per cylinder,better approachability design,easy to repair.3.Average effective pressure,power per liter,torque perliter ... are good.4.Adanced P7100 pump,low intertia,P-injector with small bore,Honeywell turbocharge,low oil consumption ... operate,monitor and self-protect,and safe. BEST PRICE FOR 250KW DIESEL GENERATOR SETS