6142-32-2110 / 129900-22080 Piston with Pin for Komatsu PC60-7 Excavator Yanmar 4D94 4D94E Engine

Product Details

Product Overview

This high-performance engine piston kit, identified by OEM part numbers 6142-32-2110 and 129900-22080, is engineered specifically for Yanmar 4D94, 4D94E, and 4TNV94 series diesel engines. It is a critical replacement component commonly used in Komatsu PC60-7 and PC130-8 excavators, as well as various Yanmar-branded forklifts and generator sets.

Manufactured to meet or exceed original equipment specifications, this piston assembly ensures reliable combustion, reduced oil consumption, and long service life in demanding heavy equipment applications. Each kit includes the piston, piston pin, and snap rings, providing everything needed for a complete single-cylinder overhaul.

Key Features & Benefits

• Precision Fitment: Machined to exact OEM tolerances for Yanmar 4D94/4D94E/4TNV94 engines, ensuring seamless installation and optimal compression ratios.
• Durable Construction: Made from high-strength aluminum alloy with an Alfin insert for the top ring groove, providing exceptional thermal resistance and wear characteristics.
• Complete Kit: Includes 1 piston, 1 piston pin, and 2 snap rings per set, eliminating the need to source additional hardware for a single-cylinder rebuild.
• Verified Compatibility: Commonly used for Komatsu PC60-7 and PC130-8 excavators, as well as Yanmar industrial engines in forklifts and generators, giving you confidence in the application.
• Rigorous Testing: Each batch undergoes machinery test reports and outgoing video inspection to verify dimensional accuracy and surface finish.
• Cost-Effective Solution: Offers a reliable aftermarket alternative to expensive OEM parts without compromising on performance or longevity.

Technical Specifications

OEM Cross-Reference

This piston assembly is a direct replacement for the following original equipment manufacturer numbers:

• Yanmar: 129900-22080
• Komatsu: 6142-32-2110
• Alternative Numbers: 129900-22090 (superseded or variant), 6142-32-2120 (if applicable for later models)

Note: Always verify your existing part number against the list above before ordering to ensure correct fitment.

Compatibility

This piston kit is designed for use in the following equipment and engine applications:

• Excavators: Commonly used for Komatsu PC60-7, PC130-8
• Forklifts: Yanmar models equipped with 4D94E or 4TNV94 engines
• Generators: Yanmar industrial generator sets using the 4D94 series
• Engine Platforms: Yanmar 4D94, 4D94E, 4TNV94 (all variants)

Fitment is inferred based on OEM specifications and common industry usage. Please confirm compatibility with your equipment’s engine serial number before installation.

Global Supply & Distribution

We offer worldwide shipping capabilities to support B2B buyers across all major industrial markets. Our logistics network ensures fast, reliable delivery to key destinations including:

• North America: Ports of Los Angeles, Houston, New York, and inland industrial hubs
• Europe: Rotterdam, Hamburg, Antwerp, and major distribution centers
• Asia-Pacific: Singapore, Tokyo, Shanghai, Sydney, and regional warehouses
• Middle East & Africa: Dubai, Jeddah, Durban, and emerging markets
• South America: Santos, Buenos Aires, and industrial zones

With export experience spanning over 50 countries, we comply with international trade regulations and can provide necessary documentation for customs clearance. Bulk orders and drop-shipping arrangements are available for qualified distributors.

Quality Assurance

Our manufacturing facility in Guangdong, China, adheres to strict quality control protocols to ensure every piston meets rigorous standards:

• Material Certification: High-strength aluminum alloy sourced from certified foundries with traceable batch numbers.
• Dimensional Accuracy: Each piston is machined to within OEM tolerances of +/- 0.02mm for skirt diameter and pin bore alignment.
• Testing Procedures: Machinery test reports are provided for each production batch, verifying compression height, ring groove depth, and pin fit.
• Visual Inspection: Outgoing video inspection is available upon request to confirm surface finish and absence of defects.
• Warranty Coverage: Backed by a 6 to 12-month warranty against manufacturing defects, depending on the application and operating conditions.

FAQ

Q: How do I confirm that this piston (6142-32-2110) fits my Komatsu PC60-7 excavator?
A: First, verify your engine model. The PC60-7 commonly uses the Yanmar 4D94E engine. Check the engine data plate for the model number. If it reads “4D94E” or “4TNV94”, this piston is the correct replacement. We also recommend measuring your cylinder bore diameter – it should be 94mm (standard size). If your engine has been previously rebored, you may need an oversize piston (e.g., 0.50mm or 1.00mm oversize).

Q: What is the recommended installation procedure for this piston and pin?
A: Always follow the engine manufacturer’s service manual. Key steps include: (1) Clean the cylinder bore thoroughly and measure for roundness. (2) Heat the piston to approximately 80°C (176°F) to expand the pin bore for easier pin installation – do not force the pin cold. (3) Install the snap rings securely, ensuring they are fully seated in their grooves. (4) Lubricate the piston skirt, rings, and pin with clean engine oil before assembly. (5) Use a ring compressor to install the piston into the cylinder, taking care not to damage the rings.

Q: Can I use this piston in a Yanmar 4TNV94 engine that powers a generator?
A: Yes, this piston is compatible with the Yanmar 4TNV94 engine, which is a common variant of the 4D94 series used in generator applications. The part numbers 129900-22080 and 6142-32-2110 are cross-referenced for the 4TNV94. However, if your generator runs at a constant high RPM (e.g., 1800 or 1500 RPM), ensure your cooling and lubrication systems are in good condition, as thermal loads differ from mobile equipment. Our 6-month warranty applies to industrial generator use under normal operating conditions.