Original Mahle 6738-31-2111 Piston Liner Kit For Komatsu 6D102 Cummins 6BT 4BT 3957795

Product Details

Product Overview

This is a genuine MAHLE piston liner overhaul kit, specifically designed for compatibility with the Komatsu 6D102 and Cummins 6BT/4BT diesel engine platforms. The kit is identified by the primary part number 6738-31-2111, with an additional cross-reference to Cummins part number 3957795.

As a 100% new, top-quality overhaul solution, this kit is essential for engine rebuilds and major overhauls. It is sourced from MAHLE, a globally recognized OEM supplier known for manufacturing original equipment components. This kit is commonly used in heavy machinery, construction equipment, and industrial applications where engine reliability is critical.

Key Features & Benefits

• Genuine MAHLE Quality: Manufactured to strict OEM specifications, ensuring a precise fit and long service life for your engine rebuild.
• Complete Overhaul Solution: This kit includes the necessary piston and liner components to restore cylinder compression and performance.
• Verified Cross-Reference: Directly cross-references to Komatsu part 6738-31-2111 and Cummins part 3957795, providing high fitment confidence.
• Durable Construction: Designed to withstand the high temperatures and pressures of turbocharged diesel engines like the 6BT and 6D102.
• Reduced Downtime: Using a genuine MAHLE kit minimizes the risk of premature failure, keeping your excavator or machinery operational longer.
• 100% New Condition: Guaranteed new, not remanufactured, ensuring maximum lifespan and performance.

Technical Specifications

OEM Cross-Reference

This piston liner kit is a direct replacement for the following OEM part numbers. Please verify your existing part number before ordering:

• Komatsu: 6738-31-2111
• Cummins: 3957795

Compatibility

This kit is commonly used for engine overhauls in the following applications. Fitment is inferred based on engine model compatibility:

• Engine Models: Komatsu 6D102, Cummins 6BT (5.9L), Cummins 4BT (3.9L)
• Common Applications:
  • Komatsu PC200-6, PC200-7, PC220-6 Excavators
  • Cummins-powered industrial generators and compressors
  • Agricultural tractors and heavy-duty trucks using B-series engines

Global Supply & Distribution

We offer worldwide shipping from our distribution hub in Shanghai, China, ensuring fast and reliable delivery to major industrial centers.

• Major Markets: North America, Europe, Southeast Asia, Middle East, Africa, and South America.
• Shipping Ports: Efficient logistics to Shanghai, Ningbo, and other major international ports.
• Delivery: Standard air and sea freight options available. Express courier (DHL/FedEx/UPS) available for urgent orders.
• Trade Compliance: Experienced in international B2B trade, customs documentation, and export regulations.

Quality Assurance

We stand behind the quality of our products with the following assurances:

• Manufacturing: Components are manufactured under MAHLE’s strict quality control systems, meeting or exceeding OE standards.
• Warranty: This product comes with a 3-month warranty against manufacturing defects.
• Testing: While a machinery test report is not available for this specific item, MAHLE components are subject to rigorous in-process quality checks during production.
• Service: After-warranty online support is available to assist with technical inquiries.

FAQ

Q1: Is this kit a direct fit for my Cummins 6BT engine?
A: Yes, this kit is specifically designed for the Cummins 6BT (5.9L) engine. However, there are different bore sizes and piston configurations within the 6BT family. We strongly recommend comparing your old piston and liner dimensions (specifically the liner height and piston crown design) with the specifications of part number 3957795 to ensure a perfect match.

Q2: Does this kit include piston rings and cylinder liners?
A: As a “Piston Liner Kit,” this typically includes the pistons and the cylinder liners (sleeves). For a complete overhaul, you may need to purchase piston rings separately, depending on the specific contents of the kit. Please check the packing list included with your shipment. If you require a full master overhaul kit including rings, bearings, and gaskets, please contact us for a custom quote.

Q3: What is the installation procedure for the cylinder liners?
A: Installation should be performed by a qualified diesel mechanic. The process generally involves removing the old liners, cleaning the cylinder block bores, checking the liner protrusion height (critical for the 6D102/6BT engines), and pressing in the new liners. The pistons should then be fitted with the correct ring gaps. Always refer to the official Komatsu or Cummins service manual for your specific engine model for torque specs and clearance values.