K4M Overhaul Re-Ring Kit Fits For Mitsubishi K4M Engine Caterpillar MS040 ME40 Excavator B25 S30 B30 S550 B550 S580 LoaderK4M Overhaul Re Ring Kit Fits For Mitsubishi K4M Engine Caterpillar MS040 ME40 Excavator B25 S30 B30 S550 B550 S580 Loader Condition: Brand New, Aftermarket Parts Application: Mitsubishi K4M Engine Item Includes: 1 Set Piston Ring ( Fit For One Engine ) 1 Set Full Gasket Kit 1 Set Main Bearing 1 Set Con Rod Bearing 1 Set Thrust Washer
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