K4N Overhaul Rebuild Kit Replacement For Mitsubishi Engine For 305CR Kobelco SK045 Excavator Cat MM57SR MM45 Loader Piston MM438685K4N Overhaul Rebuild Kit Replacement For Mitsubishi Engine For 305CR Kobelco SK045 Excavator Cat MM57SR MM45 Loader Piston MM438685 Condition: Brand New, Aftermarket Parts Application: Mitsubishi K4N Engine Item Includes: 4 PCS Piston 4 PCS Pin 8 PCS Circlip 1 Set Piston Rings ( Fit For One Engine ) 4 PCS Liner 1 Set Full Gasket Kit 1 Set Main Bearing 1 Set Con Rod Bearing 4 PCS Intake Valve 4 PCS Exhaust Valve 8 PCS Valve Guide ( IN & EX )