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Komatsu S6D140 Cylinder Liner | OEM 6150-21-2221 for HD325 Trucks & PC600 Excavators

OEM-grade Komatsu S6D140 cylinder liners (6150-21-2221) for mining trucks & excavators. 140mm bore, ISO 9001 certified.

Product Overview

Ruich Value’s Komatsu S6D140 Cylinder Liner is engineered for ​extreme mining operations, providing 3,000+ hour durability in 15.2L diesel engines. Precision-cast to OEM specifications (P/N 6150-21-2221), this component reduces piston wear by 40% compared to standard liners.


Key Features

  • High-Pressure Resistance: GG25 cast iron alloy withstands 200+ bar combustion pressure1.
  • Precision Machining: 140±0.005mm bore tolerance ensures optimal piston ring seating.
  • Thermal Management: Optimized wall thickness (8.5mm) prevents thermal deformation in HD325 trucks.
  • Certified Production: ISO 9001 & IATF 16949 compliant manufacturing process.

Technical Specifications

ParameterSpecification
OEM Part Numbers6150-21-2221, 6151-22-2220
Engine CompatibilityKomatsu S6D140/SA6D140
Bore Diameter140mm (±0.005mm)
Total Length282.9mm
Hardness200-220 BHN
Cooling SystemWet-type design
Warranty12 months/5,000 hours

Compatible Machinery

  • Mining Trucks: Komatsu HD325-7, HD405
  • Excavators: PC600-8, PC800-8
  • Bulldozers: D375A-6, D475A

Other Komatsu Engine Components

We also offer cylinder liners for other related models of Komatsu engines, such as:

ModelModelModelModel
4D884D94ES4D1026D110
4D924D95S6D1024D120
4D944D95S4D1056D125
6D956D95A6D105S6D125
S4D95S4D105SA6D1054D130
S6D954D105-3CS6D108NH220
4D95LS6D110SA6D1086D140
SA6D110

Contact Us

Email: [email protected]
Phone/WhatsApp: +86 13889277673

Bulk Order Priority: Request CIF/FOB terms for 10+ units with OEM certification documents.

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