Boron-alloyed cylinder liner (OEM 6211-21-2210) for Komatsu PC600 and PC750 excavators. Plateau honed, resists wear. Wholesale distribution ready now
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Heavy-duty centrifugally cast wet cylinder sleeve for Komatsu 6D140, SA6D140, and SAA6D140 engines.
Features premium boron-alloyed cast iron and plateau cross-hatch honing to prevent water leakage and cavitation.
OEM: 6211-21-2210 | Cross-reference: 6211-21-2211, 6211-22-2210. Fits Komatsu PC600, PC750, and PC800 excavators.
Wholesale distribution ready.
The Komatsu 6D140 engine series represents a highly respected 15.2L inline-6 heavy-duty diesel platform (15,240 cc) powering PC600-6/7, PC750-6/7, and PC800-8 mining excavators, WA600-3 wheel loaders, and HD325-6 dump trucks. To maintain stable compression and cooling efficiency in these punishing applications, this essential component of Komatsu 6D140 engine parts (OEM 6211-21-2210, cross-reference 6211-21-2211, 6211-22-2210) is designed as a premium wet cylinder sleeve. Every 6D140 sleeve is centrifugally cast from high-phosphorus boron alloyed cast iron liner material, creating an incredibly dense pearlite structure that resists cavitation erosion and severe wear. This 140mm bore liner is plateau cross-hatch honing processed on its inside diameter to retain a continuous lubricating oil film, preventing premature piston scuffing and blow-by. Rebuilders must check the cylinder liner O-ring seals and block lower packing grooves before pressing to prevent water leakage. Each full finished cylinder liner and related SAA6D140E-3 cylinder liner assembly is CNC ground to strict outer diameter tolerances, providing a perfect drop-in fit. To preserve the reliability of your PC600 cylinder liner, PC750 cylinder liner, and WA600 cylinder liner replacements, our components undergo 100% electromagnetic particle testing to eliminate raw casting defects.
| Parameter | Value |
|---|---|
| Engine Code | Komatsu 6D140 / SA6D140 / SAA6D140 (15.24L) |
| Configuration | Inline-6 Cylinders, 24 Valves SOHC |
| Engine Cylinder Bore | 140.0 mm |
| Cylinder Liner Type | Fully Finished Wet Sleeve (full finished cylinder liner) |
| Inside Diameter (ID) | 140.00 mm (140mm bore liner) |
| Outer Diameter (OD) | 158.00 mm |
| Total Length (L) | 293.00 mm |
| Collar / Flange Diameter | 170.00 mm |
| Collar / Flange Thickness | 12.00 mm |
| Material Specification | Centrifugal-Cast Boron-Alloyed Iron (boron alloyed cast iron liner) |
| Honing Pattern | Plateau Cross-Hatch Honing (plateau cross-hatch honing) |
| Max Block Bore Ovality Limit | 0.05 mm |
| Flange Protrusion Range | 0.01 – 0.08 mm |
| Primary OEM Number | 6211-21-2210 |
| Interchange References | 6211-21-2211, 6211-22-2210, 6211212210 |
Our Komatsu engine sleeves catalog covers the full medium and heavy-duty V8 and inline-6 families, from the S6D95 and S6D102 to the massive S6D140 and SAA6D170 lines. Explore our complete range of Komatsu diesel engine parts by visiting our Komatsu Brand Hub or browse other specialized brands in our main Komatsu Cylinder Liner Category.
6211-21-2210, Komatsu 6D140 Cylinder Liner, Komatsu PC600 Parts, PC750-6 Engine Parts, SA6D140 Sleeve
| Primary Part Number | Cross Ref Part Numbers | Compatible Engine Model | Compatible Machine Model |
|---|---|---|---|
| YM129907-23080 | 4D88 | PC45MR-3 Excavator | |
| 6130-22-2213 | 4D105 | D31A Dozer | |
| 6128-21-2215 | 6128-21-2214 | 6D155 | D155A Bulldozer |
| 6128-29-2210 | S6D155 | D355A Bulldozer | |
| 6140-21-2211 | 4D92 | PC60-3 Excavator | |
| 6144-21-2211 | 6142-22-2211 | 4D94 | PC60-5 Excavator |
| 6207-21-2110 | 6107-21-2120;6207-21-2121 | 6D95 | PC200-5 Excavator |
| 6736-29-2110 | S6D102 | PC200-6 Excavator | |
| 6136-21-2210 | 6137-21-2210;6137-22-2210 | 6D105 | PC200-3 Excavator |
| 6130-22-2310 | S4D105 | PC120-3 Excavator | |
| 6222-21-2110 | 6222-23-2231 | S6D108 | PC300-6 Excavator |
| 6138-21-2210 | 6138-21-2220;6138-21-2211 | S6D110 | PC220-3 Excavator |
| 6110-21-2212 | 4D120 | D50P Dozer | |
| 6150-21-2221 | 6151-22-2220 | 6D125 | PC400-5 Excavator |
| 6115-21-2211 | 4D130 | D60A Dozer | |
| 6610-21-2213 | NH220 | D155 Bulldozer | |
| 6211-21-2210 | 6D140 | PC600 Excavator |
Komatsu cylinder liners fit heavy machinery including Komatsu PC600-6 Excavator, Komatsu PC750-6 Excavator, Komatsu WA600-3 Wheel Loader, and Komatsu D155AX-5 Bulldozer.
Contact us for complete application coverage.
| Make | Machine / Vehicle Model | Year Range | Engine Code | Cylinder Liner OEM |
|---|---|---|---|---|
| Komatsu | PC600-6 / PC600LC-6 / PC650-6 Excavator (PC600 cylinder liner) | 1996–2006 | 6D140 / SA6D140 | 6211-21-2210 |
| Komatsu | PC750-6 / PC750LC-6 Excavator (PC750 cylinder liner) | 1998–2006 | SAA6D140E-3 | 6211-21-2210 |
| Komatsu | WA600-3 / WA600-3 Active Wheel Loader (WA600 cylinder liner) | 1996–2005 | SAA6D140E-3 | 6211-21-2210 |
| Komatsu | D155AX-5 Crawler Bulldozer / HD325-6 Dump Truck | 1998–2008 | SAA6D140E-3 | 6211-21-2210 |
Symptom: Emulsified milky oil during checks, drop in coolant level, or high coolant temperatures under load.
Diagnosis: Failed lower packing crevice O-rings or deteriorated cylinder block grooves allow coolant to bypass the wet liner collar and mix with the oil sump.
Solution: Yes, we recommend replacing the O-rings during installation. We provide high-temperature viton cylinder liner O-ring seals with our liner kits to ensure a complete, leak-free seal.
Symptom: Extended downtime during rebuilds due to post-press boring and honing processes.
Diagnosis: Semi-finished liners require boring and plateau honing after installation in the block, whereas finished sleeves are pre-honed to final specifications.
Solution: This is a full finished cylinder liner with a standard pre-honed 140mm bore liner profile, allowing direct hydraulic press-fitting without additional machining.
Symptom: Misfiring, excessive blow-by, or block installation interference when assembling different emission tiers.
Diagnosis: Komatsu SAA6D140E-3 cylinder liner and SA6D140 series share identical 140.00 mm bore dimensions and wet-type block seating configurations.
Solution: Yes, the 6211-21-2210 is fully compatible across SAA6D140E-3, SA6D140, and 6D140 platforms. Always verify engine serial numbers during overhaul to match O-ring grooves.
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For Cylinder Liner: Gaskets, O-rings, piston kits available. Part number required for final confirmation.
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