Ensure reliable performance and extended engine life with this complete overhaul rebuild kit for Komatsu 4D98E and Yanmar 4TNE98 engines. Specifically designed for Komatsu midi excavators PC70FR-1, PC75R-1, PC75R-2, and PC80MR-3, this rebuild kit includes all the critical parts needed to restore power, improve efficiency, and maintain long-term durability.
Crafted with OEM-grade quality materials, the kit guarantees a perfect fit, excellent wear resistance, and dependable performance in heavy-duty construction environments. Whether you’re performing a full engine rebuild or major repair, this kit provides everything needed for a professional result.
Fitment Details – Compatible Engine Models:
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Yanmar Engines:
4TNE98-AC, 4TNE98-ACG24, 4TNE98-AD, 4TNE98-ADS, 4TNE98-AG, 4TNE98-AMM, 4TNE98-FB, 4TNE98-SA, 4TNE98-G1A, 4TNE98-HYS, 4TNE98-KM, 4TNE98-NSR, 4TNE98-TB, 4TNE98-TBZ, 4TNE98-TBL, 4TNE98-TBW, 4TNE98-TBA, 4TNE98-WI -
Komatsu Engines:
4D98E-1A-TR, 4D98E-1C, 4D98E-1FB, 4D98E, 4D98E-1
Applications – Compatible Machines:
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Komatsu PC70FR-1 Midi Excavator
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Komatsu PC75R-1 Midi Excavator
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Komatsu PC75R-2 Midi Excavator
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Komatsu PC80MR-3 Midi Excavator
Kit Contents:
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1 Set Overhaul Gasket Kit
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4 Cylinder Liners (Semi-finished, require machining)
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4 Pistons STD
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4 Piston Pins
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8 Snap Rings
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4 Rod Bushings
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1 Set Piston Rings STD
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1 Set Main & Con Rod Bearings
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1 Set Thrust Bearings
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1 Set Intake & Exhaust Valves
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1 Set Intake & Exhaust Valve Seats
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8 Valve Guides
This Komatsu 4D98E / Yanmar 4TNE98 overhaul rebuild kit is engineered to restore horsepower, maximize fuel efficiency, and extend service life, making it the perfect solution for keeping your Komatsu excavator in peak working condition.


