Diesel Engine Cylinder Liner 6115-21-2211 For Komatsu 4D130 S4D130

6115-21-2211 Cylinder Liner for Komatsu 4D130 / S4D130 Engine Applications

The 6115-21-2211 cylinder liner is a replacement engine sleeve used for Komatsu 4D130 / S4D130 diesel engine applications. It is selected during engine overhaul work when the original liner shows bore wear, scoring, corrosion, or sealing surface damage.

This product page is focused on the 6115-21-2211 liner only. Final fitment should be checked by engine model, old part number, liner dimensions, and machine parts book before ordering.

Technical Reference for 6115-21-2211 Cylinder Liner

When Should the 6115-21-2211 Cylinder Liner Be Replaced?

The cylinder liner should be inspected when the engine has low compression, excessive blow-by, coolant loss, oil contamination, abnormal smoke, hard starting, or repeated piston ring wear. A damaged liner can reduce combustion sealing and shorten the service life of the piston, piston rings, and cylinder block.

Replacement is usually required when the liner bore is scratched, polished, cracked, cavitated, or worn beyond the allowable service limit. The liner seating area and sealing surface should also be checked before installation.

Fitment Verification Before Ordering

Before ordering 6115-21-2211, confirm the engine model, machine model, old liner part number, bore size, outer diameter, total length, and flange dimensions. For older Komatsu engines, rebuild history may affect the final liner selection.

If the old cylinder liner is available, measuring the removed liner is the safest method. Buyers can send photos of the old liner, part number marks, and key dimensions to Topvelsun for checking before shipment.

Installation and Maintenance Notes

Clean the cylinder block liner bore and seating area before installation. Dirt, rust, burrs, or uneven contact surfaces may affect liner alignment and sealing performance.

Check liner fit, protrusion, and sealing surface condition according to the engine service manual. Incorrect liner seating may cause compression leakage, coolant leakage, piston scuffing, or early gasket failure.

During engine rebuild, inspect the piston, piston rings, connecting rod, cylinder block, and cooling system together. After installation, monitor coolant level, oil condition, crankcase pressure, and exhaust smoke during the first operating period.

Why Buy 6115-21-2211 Cylinder Liner from Topvelsun?

Topvelsun supplies replacement engine parts for excavators, wheel loaders, bulldozers, and other heavy equipment. For cylinder liner orders, we help buyers check part number, engine model, and key dimensions before shipment.

This product is suitable for repair shops, fleet maintenance teams, parts distributors, and overseas buyers working on Komatsu 4D130-family engine rebuild projects.

FAQ

Is 6115-21-2211 used for Komatsu 4D130 engines?

Yes. 6115-21-2211 is commonly listed as a cylinder liner reference for Komatsu 4D130-family engine applications. Final fitment should be verified by the engine model, old liner number, and dimensions.

Can 6115-21-2211 be used for S4D130 engines?

It is listed for 4D130 and S4D130 reference applications. Buyers should still confirm the machine serial number, engine configuration, and removed liner dimensions before ordering.

What dimensions should be checked before ordering?

Check the bore reference, outer diameter, total length, flange diameter, flange thickness, and sealing surface condition. These dimensions help confirm whether the liner matches the engine block.

Is 6115212211 the same search format as 6115-21-2211?

Yes. 6115212211 is commonly used as a no-hyphen search format for 6115-21-2211. The final part should still be verified by the full part number and dimensions.

Can Topvelsun help verify the correct liner before shipment?

Yes. Buyers can provide the old part number, engine model, machine model, serial number, and liner photos. Topvelsun can help compare the information before order confirmation.