Hey there mechanics and equipment owners! If you're dealing with a Yanmar 4TNE98 or Komatsu 4D98E engine in your PW75-1 or PW75R-2 mobile excavator, this complete overhaul rebuild kit has everything you need to get that engine running like new again. This isn't some partial kit - you get the full monty here: a complete overhaul gasket set, 4 semi-finished cylinder liners (ready for final honing), 4 STD pistons with piston pins and snap rings, rod bushings, piston ring sets for all 4 pistons, main and con rod bearings, thrust bearings, intake and exhaust valves with seats, and 8 valve guides. Seriously, it's everything in one box! The semi-finished cylinder liners mean they're almost ready to go but need that final touch for perfect fit. Perfect for when your engine is showing its age or after a major failure. Whether you're a professional mechanic or a savvy equipment owner, having all these quality parts together saves you time hunting down individual components. Your excavator will be back to digging and moving earth in no time with this comprehensive rebuild solution. Just make sure you've got the skills or a good mechanic to handle the installation!