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Komatsu Cylinder Liners for Heavy-Duty Industrial Diesel Engines

Maximize equipment uptime with boron-alloyed cylinder sleeves engineered for high-vibration mining and construction environments.

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Reliable Performance: Precision Komatsu Cylinder Sleeves for Mining & Construction

In the demanding world of earthmoving and mineral extraction, the integrity of your engine core determines your operational success. Our wholesale Komatsu Cylinder Liner inventory (often sought as premium Engine Cylinder Sleeves) is meticulously curated to support the full spectrum of Komatsu powerplants. From the widely-used 6D95 and 6D102 series in mid-sized excavators to the heavy-duty 6D125, 6D140, and 6D155 series found in ultra-class mining equipment, we provide the metallurgical stability required for long-term reliability. Our manufacturing process focuses on the specific thermal and mechanical stresses of high-hour industrial diesel engines. By utilizing centrifugally cast boron-alloyed iron, we deliver Wet Liners that effectively combat the cavitation pitting and bore glazing that often lead to premature engine failure. Whether you are maintaining a local construction fleet or a global mining operation involving high-traffic models like the 6D170, our catalog ensures that your overhaul results in factory-grade compression. We invite you to review our technical specifications and application guide below to find the exact fit for your Komatsu equipment.

Buyer’s Guide: Identifying the Correct Komatsu Liner Type

Choosing between dry and wet liners is the first step in a successful engine rebuild. Below is a breakdown of Komatsu’s primary sleeve configurations.
Engine Family Configuration Key Technical Trait
4D88 / 4D94 Series Dry Sleeve Thin-wall, semi-finished design for utility machines.
95 / 102 / 108 Series Wet Liner Direct coolant contact with precision O-ring sealing.
125 / 140 / 155 Series Heavy Wet Liner Reinforced flanges to resist high-compression vibration.

Komatsu Engine & Equipment Applications

Engine Series Typical Equipment Models
6D95 / S6D95 PC200-5, PC220-5, WA320 Wheel Loaders
6D125 / S6D125 PC400-5, PC450-6, D85 Dozers
6D155 / S6D155 D155A, D355A Bulldozers, PC1000 Mining Excavators

Why Source Komatsu Cylinder Liners from Ruich Value?

Our engineering standards are designed to eliminate the common pain points of aftermarket diesel components.
  • Boron-Alloyed Centrifugal Casting: We use high-density iron enriched with boron and nickel. Solves: Prevents bore glazing and excessive piston ring wear during high-load operations.
  • Precision Plateau Honing: Each sleeve features an optimized cross-hatch pattern for oil retention. Solves: Eliminates initial scuffing and scoring, ensuring a perfect break-in period.
  • Induction-Hardened Flanges: Critical reinforcement of the liner’s top mounting surface. Solves: Resists flange erosion due to vibration and prevents head gasket failure under high pressure.
  • Anti-Cavitation Surface Coating: Specialized wall treatment to prevent bubble implosion damage. Solves: Extends the life of wet liners in machines with aggressive cooling cycles.
  • Ready-to-Ship Inventory: Strategic stock of the full Komatsu range from compact to mining series. Solves: Minimizes downtime for urgent fleet breakdowns and speeds up your capital turnover.

Available Komatsu Cylinder Liner Range

Explore our verified catalog of Komatsu engine sleeves, precision-machined to match or exceed original factory specifications.
Primary Part NumberKomatsu 6D140 Cylinder Liner 6211-21-2210Cross Ref Part NumbersCompatible Engine ModelCompatible Machine Model
YM129907-230804D88PC45MR-3 Excavator
6130-22-22134D105D31A Dozer
6128-21-22156128-21-22146D155D155A Bulldozer
6128-29-2210S6D155D355A Bulldozer
6140-21-22114D92PC60-3 Excavator
6144-21-22116142-22-22114D94PC60-5 Excavator
6207-21-21106107-21-2120;6207-21-21216D95PC200-5 Excavator
6736-29-2110S6D102PC200-6 Excavator
6136-21-22106137-21-2210;6137-22-22106D105PC200-3 Excavator
6130-22-2310S4D105PC120-3 Excavator
6222-21-21106222-23-2231S6D108PC300-6 Excavator
6138-21-22106138-21-2220;6138-21-2211S6D110PC220-3 Excavator
6110-21-22124D120D50P Dozer
6150-21-22216151-22-22206D125PC400-5 Excavator
6115-21-22114D130D60A Dozer
6610-21-2213NH220D155 Bulldozer
6211-21-22106D140PC600 Excavator

Detailed View: Select a specific item below to view detailed technical specifications, OEM cross-reference data, and high-resolution physical photos.

View all specs in our Komatsu Cylinder Liner Catalog.

Looking for more components? Explore our complete Komatsu Industrial Diesel Engine Parts Catalog

Technical Insights: Identifying Your Komatsu Liner

Q: How do I know if I need a semi-finished or a full-finished liner?

Answer: Compact Yanmar-design engines (like 4D88) typically use semi-finished dry sleeves that require boring after installation. Larger 100-series and 125-series wet liners are usually supplied full-finished, meaning they are honed to the final spec and ready for immediate assembly.

Q: My 6D125 liner shows external pitting; is it still usable?

Answer: Pitting is a sign of cavitation erosion. If the pits reach a certain depth, they can compromise the structural integrity or cause coolant leaks. Ruich Value’s manufacturing experience recommends replacement to avoid catastrophic engine failure.

Q: What is the difference between “Old” and “New” 4D105 liners?

Answer: The difference usually lies in the flange height and the O-ring groove depth. It is critical to provide your engine serial number or measure the old liner’s dimensions to ensure a leak-proof seal during installation.

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Note: Beyond our standard inventory, we provide customized development services for specific engine components based on your technical drawings or original samples.

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

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