Mitsubishi 4DR5 4DR7 Connecting Rod Bush – Engine Spare Parts for Excavator & Industrial Engines

Product Details

Product Overview

This high-quality Connecting Rod Bush is specifically engineered for the Mitsubishi 4DR5 and 4DR7 diesel engine series. As a critical component in the engine’s rotating assembly, this bush ensures precise fitment and reduced friction between the connecting rod and the piston pin. Sourced from premium materials and manufactured to strict OEM standards, this part is ideal for heavy-duty applications in excavators, generators, and industrial machinery. We serve a global B2B clientele with reliable shipping to major markets including North America, Europe, Southeast Asia, the Middle East, and Africa.

Key Features & Benefits

• Premium Material: Manufactured from high-grade copper-lead or steel-backed alloy for superior wear resistance and load-bearing capacity.
• Precision Engineering: Machined to exact tolerances (typically within microns) to ensure perfect alignment with the piston pin and connecting rod.
• Enhanced Durability: Designed to withstand high temperatures, extreme pressures, and continuous operation in demanding environments.
• Reduced Friction: Optimized surface finish minimizes friction, improving fuel efficiency and reducing engine wear.
• Direct Fit Replacement: 100% interchangeable with the original Mitsubishi part, requiring no modifications for installation.

Technical Specifications

OEM Cross-Reference

This connecting rod bush is a direct replacement for the following original Mitsubishi part numbers:

• ME074127 (Original Mitsubishi reference for 4DR5/4DR7)
• ME074128 (Alternative reference)
• 31A31-00100 (Cross-reference for some industrial applications)

Note: Always verify your existing part number for compatibility. Contact us if you need assistance with cross-referencing.

Compatibility

This part is specifically designed for the following Mitsubishi diesel engine models:

• Mitsubishi 4DR5 (used in various excavators, forklifts, and generators)
• Mitsubishi 4DR7 (common in medium-duty industrial equipment)

Common Equipment Applications:

• Excavators (e.g., Komatsu PC series, Caterpillar 300 series with Mitsubishi engines)
• Wheel Loaders
• Diesel Generators
• Marine Engines
• Agricultural Tractors

Year ranges: Typically applies to engines manufactured from the late 1980s through the 2000s. Please confirm with your engine serial number.

Global Supply & Distribution

We are a dedicated supplier of Mitsubishi engine components with a robust global logistics network. Our shipping capabilities include:

• Worldwide Shipping: We ship to over 50 countries via DHL, FedEx, UPS, and sea freight.
• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, France), Asia-Pacific (Japan, South Korea, Australia, Indonesia), Middle East (UAE, Saudi Arabia, Qatar), and Africa (South Africa, Nigeria, Kenya).
• Fast Delivery: Standard delivery to major ports (e.g., Rotterdam, Shanghai, Dubai, Los Angeles) within 7-15 working days.
• Bulk Orders: Competitive pricing for wholesale, OEM, and aftermarket distributors. We offer FOB, CIF, and EXW terms.

Quality Assurance

• Manufacturing Standards: ISO 9001:2015 certified production facilities.
• Material Testing: Each batch undergoes hardness, tensile strength, and dimensional inspection.
• Warranty: 12-month warranty against defects in material and workmanship.
• Certifications: Compliant with international quality standards for aftermarket and replacement parts.

FAQ

Q1: Is this connecting rod bush a direct fit for my Mitsubishi 4DR5 engine?

A: Yes, this bush is designed as a direct OEM replacement for the Mitsubishi 4DR5 and 4DR7 engines. It matches the original dimensions and material specifications. However, we recommend comparing it with your old part or checking your engine serial number to ensure compatibility, especially if the engine has been rebuilt with non-standard components.

Q2: Do I need to replace the piston pin or connecting rod when installing this bush?

A: Not necessarily. The connecting rod bush is a wearable component that can be replaced independently. However, for optimal performance and to prevent premature wear, we recommend inspecting the piston pin and connecting rod small-end bore for scoring or out-of-roundness. If either shows significant wear, replacement of the pin or rod is advised.

Q3: What is the recommended installation procedure for this bush?

A: Installation requires precision. The bush should be pressed into the connecting rod small-end using a hydraulic press and a proper alignment tool. After installation, the inner diameter may require final honing to achieve the correct clearance (typically 0.03–0.06 mm) with the piston pin. We recommend having this work performed by a qualified diesel engine technician to avoid misalignment or damage.