6D31 Main Bearing & Connecting Rod Bearing ME088928 ME088741 0.25mm for Mitsubishi Engine Parts

Product Details

Product Overview

This offering consists of a precision-engineered set of main bearings and connecting rod bearings specifically designed for the Mitsubishi 6D31 diesel engine. The set includes part numbers ME088928 (main bearing) and ME088741 (connecting rod bearing), supplied in a standard undersize of 0.25mm for engine rebuilds requiring journal regrinding.

Manufactured by, these bearing shells are crafted to meet OEM specifications, ensuring reliable performance in heavy-duty applications. Commonly used in a wide range of industrial and construction equipment, this bearing set is a critical component for engine overhauls on forklifts, excavators, loaders, and other Mitsubishi-powered machinery.

Each bearing is inspected for precise dimensional accuracy and material hardness, providing a secure fit and optimal oil clearance for extended engine life. This product is ideal for workshops and parts distributors serving the heavy equipment aftermarket.

Key Features & Benefits

• Precise Undersize Fit: Supplied at 0.25mm undersize, these bearings are specifically intended for engines where the crankshaft journals have been ground down during a rebuild, ensuring correct clearance and oil film thickness.
• OEM Specification Compliance: Manufactured to match the original Mitsubishi 6D31 engine specifications, guaranteeing direct interchangeability with factory parts.
• High-Durability Material: Constructed from high-grade steel-backed alloy materials designed to withstand high loads, friction, and heat generated in turbocharged diesel engines.
• Complete Set Convenience: This package includes both main and connecting rod bearings, simplifying the ordering process and ensuring component compatibility within the same engine build.
• Rigorous Quality Control: Each bearing undergoes outgoing inspection to verify critical dimensions, reducing the risk of installation errors and premature failure.
• Versatile Application: Suitable for a variety of heavy equipment including excavators, forklifts, bulldozers, and trucks, making it a versatile stock item for parts dealers.

Technical Specifications

OEM Cross-Reference

This bearing set replaces the following original Mitsubishi part numbers:

• Main Bearing: ME088928, ME088930, ME088931
• Connecting Rod Bearing: ME088741, ME088742

Note: Always verify the exact part number on your original bearing shell and the required undersize before ordering.

Compatibility

This bearing set is designed for the Mitsubishi 6D31 diesel engine. It is commonly used in the following types of machinery and equipment:

• Forklifts: Mitsubishi, Nissan, TCM, Komatsu forklifts powered by the 6D31 engine.
• Excavators: Compact and mid-size excavators utilizing the 6D31 power unit.
• Loaders & Bulldozers: Small to medium wheel loaders and crawler dozers.
• Trucks & Buses: Light to medium-duty trucks and buses fitted with this engine.
• Industrial Engines: Generator sets and agricultural machinery.

Important: This part is specifically for the 6D31 engine model. It is not compatible with the 6D31-T (turbo) or other Mitsubishi engine families (e.g., 4D31, 6D34) without verification of crankshaft journal dimensions.

Global Supply & Distribution

We serve a global network of B2B clients including heavy equipment rebuild shops, engine parts wholesalers, and construction machinery dealers. Our logistics network supports efficient shipping to all major industrial regions:

• North America: Fast delivery to ports in Los Angeles, Houston, New York, and Vancouver.
• Europe: Regular shipments to Rotterdam, Hamburg, and Antwerp for distribution across the EU.
• Asia-Pacific: Direct supply to Singapore, Dubai, and major Australian ports.
• Middle East & Africa: Established routes to Jebel Ali, Dammam, and Johannesburg.

We offer flexible shipping options including air freight for urgent orders and sea freight for volume purchases. All exports comply with international trade regulations and are professionally packed to prevent damage during transit.

Quality Assurance

bearings are manufactured under strict quality management protocols. Each production batch is subjected to:

• Dimensional Inspection: Checking wall thickness, curvature, and width against OEM master gauges.
• Material Analysis: Spectrometer testing to verify alloy composition and hardness.
• Video Outgoing Inspection: Visual and dimensional verification is recorded for client reference upon request.
• Machinery Test Report: Available to confirm performance under simulated load conditions.

We provide a 6-month warranty against manufacturing defects, including material separation, incorrect sizing, or premature wear under normal operating conditions. If any issue arises, our technical team is available to assist with diagnosis and replacement.

FAQ

Q1: How do I confirm that 0.25mm undersize bearings are correct for my engine?
A: Undersize bearings are used when the crankshaft journals have been reground to a smaller diameter during an engine rebuild. You must measure the reground journal diameter with a micrometer. If the journal diameter is 0.25mm smaller than the standard specification, these bearings are correct. If the crankshaft is not reground, you need standard size bearings. We recommend consulting your engine service manual for the exact journal diameter specifications.

Q2: What is the difference between ME088928 and ME088741 bearings?
A: The ME088928 is the part number for the main bearing set, which fits the crankshaft main journals (the points where the crank sits in the engine block). The ME088741 is the part number for the connecting rod bearings, which fit between the connecting rod and the crankshaft rod journals. This set includes both, ensuring all bearings in the engine are replaced with matched undersize components.

Q3: What is the recommended installation procedure for these bearings?
A: Installation should be performed by a qualified diesel mechanic. General steps include: 1) Clean the bearing saddles and caps thoroughly. 2) Apply clean engine oil to the bearing surface. 3) Install bearings without mixing upper and lower shells (if different). 4) Torque main bearing caps and connecting rod caps to the manufacturer’s specified torque settings using a calibrated torque wrench. 5) Always check oil clearance using Plastigage after installation to ensure proper clearance (typically 0.03-0.08mm for main bearings). Never force bearings into place.