6D155 S6D155 Piston 4R 130mm Combustion Chamber 167.5mm Height 6128-31-2113 For Komatsu Engine Parts

Product Details

Product Overview

This high-quality piston, identified by OEM number 6128-31-2113, is specifically engineered for the Komatsu 6D155 and S6D155 diesel engine platforms. Designed with a 130mm bore diameter and a 4R ring configuration, this piston features a precisely machined combustion chamber and a critical compression height of 167.5mm.

Manufactured to meet OEM specifications, this component is a direct replacement for the original part in heavy-duty applications. It is commonly used in Komatsu construction machinery, industrial equipment, and power generation units that rely on the rugged 6D155 series engine. Please verify your engine model and existing part number to confirm compatibility before installation.

Key Features & Benefits

• OEM Standard Dimensions: Manufactured with a 130mm diameter and 167.5mm height, ensuring a precise fit and maintaining the correct compression ratio for optimal engine performance.
• Durable Construction: Built from high-strength alloy materials to withstand the extreme pressures and temperatures within a heavy-duty diesel combustion chamber.
• Designed for 4R Ring Pack: The piston grooves are precisely machined to accept a standard 4-ring configuration, providing superior oil control and compression sealing.
• Optimized Combustion Chamber: The specific bowl shape is engineered to improve fuel-air mixing, leading to more efficient combustion and reduced emissions.
• Rigorous Quality Control: Each piston undergoes dimensional and material testing, with machinery test reports and video inspection provided to ensure reliability.
• Direct Replacement Fit: Designed as a direct replacement for the Komatsu genuine part 6128-31-2113, minimizing downtime during engine overhauls.

Technical Specifications

OEM Cross-Reference

This piston is a direct replacement for the following OEM part numbers. Always cross-reference your existing part to ensure compatibility.

• Komatsu: 6128-31-2113

Compatibility

This piston is specifically designed for use in diesel engines. It is commonly used for the following engine models and applications:

• Engine Models: Komatsu 6D155, Komatsu S6D155
• Applications: Commonly used in Komatsu bulldozers (e.g., D65 series), excavators, and other heavy construction equipment, as well as industrial engines and generator sets.

Note: Fitment is inferred based on the engine model. Please verify the specific engine serial number and piston type before ordering.

Global Supply & Distribution

We serve a global network of B2B clients including parts distributors, repair shops, and equipment dealers. Our logistics network ensures fast and reliable delivery to major industrial hubs worldwide.

• Major Markets: North America, Europe, Southeast Asia, Middle East, Africa, and Oceania.
• Shipping: We offer express shipping (DHL, FedEx, UPS) for small orders and sea freight for bulk shipments to major ports like Houston, Rotterdam, Singapore, and Dubai.
• Export Experience: With years of experience in international trade, we ensure proper documentation and compliance with import regulations.

Quality Assurance

Our pistons are manufactured under strict quality control protocols to ensure they meet or exceed OEM performance standards.

• Manufacturing Standards: ISO 9001 quality management systems are followed during production.
• Testing: Each batch undergoes dimensional inspection and material analysis. Machinery test reports and video outgoing inspections are available upon request.
• Warranty: This product is backed by a standard 6-month warranty against manufacturing defects. After-warranty online support is also available.

FAQ

Q: Is this piston a direct replacement for the Komatsu genuine part 6128-31-2113?
A: Yes, this piston is manufactured to OEM specifications and is designed as a direct replacement for the Komatsu genuine part number 6128-31-2113. It features the same 130mm bore, 167.5mm height, and 4R ring configuration.

Q: What is the correct installation procedure for this piston?
A: Installation should be performed by a qualified diesel mechanic. It is critical to measure the piston-to-cylinder wall clearance and ensure the ring gaps are correctly positioned. Always use new piston rings and lubricate the piston skirt and rings during installation. Refer to the Komatsu service manual for your specific engine model for torque specifications.

Q: How should I store this piston if I am not installing it immediately?
A: Store the piston in a clean, dry environment. Keep it in its original packaging to protect the machined surfaces and ring grooves from dirt and corrosion. Avoid exposing the piston to extreme temperature fluctuations or moisture.