Came off a running 2001 zr 600 EFI?We didn’t?Drive this machine around hence there’s no snow :-)?We did a compression test and ran on a stationary stand!!Condition:?USED 600 EFI Engine?Power Valve?comes with power valves,oil pump, water pump,? crankcase, crank, cylinders, pistons, head.Mileage 3455? ?PSI 130 each cylinder Check Photos!Engine is as is no warranty, No returns, No core!!FIT CHART:? ? ? ? May Fit other years? ? ? ?2001 Mountain?Cat 600 EFI2001 ZL 600 EFI2001 ZR 600 EFI