6D31 6D31T Crankshaft for Mitsubishi Engine | Construction & Industrial Repair Parts

Product Details

Product Overview

This high-quality 6D31 / 6D31T crankshaft is specifically designed as a direct replacement for Mitsubishi heavy-duty diesel engines. Manufactured to OEM size specifications, this component is a critical repair part for restoring engine performance in demanding applications.

Ideal for use in construction machinery, agricultural equipment, industrial power units, marine vessels, material handling equipment, and generator sets, this crankshaft ensures reliable rotational force transfer. The part is engineered to withstand high torsional stress and continuous operation, making it a trusted choice for engine rebuilders and fleet maintenance professionals seeking durable Mitsubishi engine components.

As a standard OEM-size replacement, this crankshaft offers a direct fit for engines requiring a 6D31 or 6D31T crankshaft. It provides a cost-effective alternative to genuine parts without compromising on structural integrity or performance specifications.

Key Features & Benefits

• Direct OEM Fitment: Manufactured to exact OEM dimensions for the 6D31 and 6D31T engine series, ensuring a precise installation without modification.
• High-Strength Construction: Forged from premium-grade steel alloy to provide exceptional fatigue resistance and durability under continuous heavy loads.
• Precision Machining: All journal surfaces are ground and polished to strict tolerances for optimal oil film retention and reduced bearing wear.
• Enhanced Reliability: Designed to withstand the high torque demands of turbocharged (6D31T) and naturally aspirated (6D31) configurations.
• Versatile Application: Suitable for a wide range of equipment including excavators, bulldozers, generators, and marine engines using the Mitsubishi 6D31 platform.
• Rigorous Quality Control: Each unit undergoes dimensional inspection and surface hardness testing to ensure consistent quality.
• Comprehensive Support: Backed by a 6-month warranty and includes machinery test reports for quality verification.

Technical Specifications

OEM Cross-Reference

This crankshaft is a direct replacement for the following original Mitsubishi part numbers and their equivalents:

• Mitsubishi OEM: ME011345, ME011346, ME012345 (Typical references for 6D31 series)
• Alternative References: 6D31-01001, 6D31T-01001 (Engine block casting references)

Note: Please verify your engine’s specific serial number and crankshaft part number to confirm compatibility. This listing serves as a cross-reference and should be verified against your existing component.

Compatibility

This crankshaft is commonly used for the following Mitsubishi engine models and applications:

• Engine Models: 6D31, 6D31T (including 6D31-TLE, 6D31-TLD variants)
• Equipment Types:
  • Construction: Excavators, Bulldozers, Wheel Loaders
  • Agriculture: Tractors, Harvesters
  • Industrial: Compressors, Pumps, Generators
  • Marine: Inboard engines, Auxiliary power units
  • Material Handling: Forklifts, Cranes

Global Supply & Distribution

We offer worldwide shipping capabilities to support international B2B buyers across all major markets. Our distribution network ensures fast and reliable delivery to:

• North America: Los Angeles, Houston, Chicago, Toronto
• Europe: Rotterdam, Hamburg, Antwerp, Felixstowe
• Asia-Pacific: Singapore, Shanghai, Tokyo, Sydney, Dubai
• Middle East & Africa: Jebel Ali, Dammam, Durban, Lagos

We maintain strong export experience with full customs documentation, including commercial invoices, packing lists, and certificates of origin. Our logistics partners ensure safe transit for heavy engine components, with options for sea freight, air freight, and express courier services.

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001 certified facilities with strict adherence to OEM dimensional tolerances.
• Testing: Each crankshaft undergoes magnetic particle inspection (MPI) for surface cracks and dimensional verification of main and pin journals.
• Certifications: Machinery Test Report provided with each unit, confirming balance and hardness specifications.
• Warranty: 6-month warranty against manufacturing defects, ensuring peace of mind for your engine rebuild projects.
• Inspection: Video outgoing inspection available upon request to verify part condition before shipment.

FAQ

Q: How do I confirm this 6D31 crankshaft fits my specific engine?
A: Please verify your engine’s model number (6D31 or 6D31T) stamped on the engine data plate. Additionally, measure your existing crankshaft’s main journal diameter (typically 80mm for 6D31 series) and overall length. If your engine is a 6D31 variant with turbocharging (6D31T), this crankshaft is designed to handle the increased stress. For non-standard applications, please contact us with your engine serial number for verification.

Q: What installation precautions should I take?
A: Before installation, inspect the crankshaft for any shipping damage and verify all journal diameters using a micrometer. Always replace main and connecting rod bearings, thrust washers, and oil seals when installing a new crankshaft. Apply clean engine oil to all bearing surfaces during assembly. Torque all main bearing caps to factory specifications (typically 180-200 Nm for 6D31 series) using a calibrated torque wrench. After installation, rotate the crankshaft manually to ensure smooth rotation before starting the engine.

Q: What is the expected service life of this aftermarket crankshaft?
A: When properly installed with correct bearing clearances and regular oil changes, this crankshaft can provide service life comparable to OEM components. The forged steel construction offers excellent fatigue resistance. However, service life depends on operating conditions, maintenance practices, and load factors. In standard construction equipment applications with proper lubrication, you can expect 8,000-12,000 hours of reliable service. We recommend periodic oil analysis to monitor bearing wear patterns and extend engine life.