Mitsubishi 4DQ5-2 Connecting Rod Bushing for Excavator Engine Parts

Product Details

Product Overview

This high-precision Connecting Rod Bushing (Part Number: 4dq5-2) is specifically engineered for the Mitsubishi 4DQ5-2 diesel engine, commonly found in heavy-duty excavators and industrial machinery. As a critical wear component, this bushing ensures optimal clearance between the connecting rod and piston pin, reducing friction and extending engine life. We are a global supplier with extensive export experience to North America, Europe, Asia-Pacific, the Middle East, and South America, offering fast, reliable shipping to major ports and industrial centers worldwide.

Key Features & Benefits

• Premium Durability: Manufactured from high-strength, wear-resistant alloy material to withstand extreme loads and high temperatures.
• Precision Engineering: Machined to exact OEM specifications (4dq5-2) for a perfect fit, eliminating the need for reaming or modification.
• Reduced Friction: Optimized surface finish and oil retention grooves ensure superior lubrication, minimizing wear on the piston pin and connecting rod.
• Extended Service Life: Designed to exceed the lifespan of standard replacement parts, reducing downtime and maintenance costs.
• Rigorous Testing: Each bushing undergoes dimensional, hardness, and surface finish inspections to guarantee 100% quality control.

Technical Specifications

OEM Cross-Reference

This part is a direct replacement for the following original equipment manufacturer (OEM) numbers:

• Mitsubishi: 4dq5-2
• Note: This is a genuine OEM specification part. Please verify your engine model and existing part number before ordering. We recommend cross-referencing with your original bushing for dimensional accuracy.

Compatibility

This connecting rod bushing is compatible with the following engine and equipment:

• Engine Model: Mitsubishi 4DQ5-2 (Naturally Aspirated & Turbocharged variants)
• Vehicle/Equipment Applications:
  • Excavators (e.g., Komatsu PC-series with Mitsubishi engines)
  • Bulldozers
  • Forklifts
  • Agricultural Tractors
  • Generator Sets & Industrial Pumps
• Year Range: Generally applicable to engines produced from the 1990s onward. Please confirm with your engine serial number.

Global Supply & Distribution

We provide efficient, worldwide logistics to support your business operations:

• Shipping: Express (DHL/FedEx/UPS), Air Freight, and Sea Freight available.
• Major Markets Served: United States, Canada, Germany, UK, France, Australia, Japan, South Korea, UAE, Saudi Arabia, Brazil, South Africa, and Southeast Asia.
• Delivery to Key Ports: Los Angeles, Rotterdam, Shanghai, Dubai, Santos, and more.
• Lead Time: Stock items ship within 24-48 hours. Bulk orders typically 7-15 days.
• Export Compliance: We adhere to all international trade regulations and provide full documentation (Commercial Invoice, Packing List, Certificate of Origin, etc.).

Quality Assurance

• Manufacturing Standard: ISO 9001:2015 certified production facility.
• Material Certification: Mill test reports available upon request.
• Inspection: 100% dimensional inspection using CMM (Coordinate Measuring Machine) and surface roughness testers.
• Warranty: 12-month warranty against manufacturing defects under normal operating conditions.

FAQ

Q1: Is this bushing a direct fit for my Mitsubishi 4DQ5-2 engine, or does it require machining?
A: This bushing is manufactured to the exact OEM dimensions (4dq5-2) and is designed to be a direct fit. However, we always recommend checking the inside diameter (ID) and outside diameter (OD) against your old bushing before installation. Some heavy-duty applications may require a slight hone to achieve the precise pin-to-bushing clearance specified in your service manual (typically 0.03mm – 0.08mm).

Q2: What is the recommended installation procedure?
A: Installation should be performed by a qualified mechanic. The bushing should be pressed into the connecting rod using a proper arbor press and a pilot tool to prevent distortion. Ensure the oil hole in the bushing aligns perfectly with the oil passage in the connecting rod. After installation, verify the inner diameter is within spec. Never hammer the bushing into place as this can cause damage and premature failure.

Q3: How do I identify if my 4DQ5-2 engine needs a new connecting rod bushing?
A: Common signs of a worn bushing include: a knocking or tapping sound from the engine (especially at idle or low RPM), low oil pressure, and excessive piston slap. If you are rebuilding the engine, it is standard practice to replace the connecting rod bushings, piston pin bushings, and piston rings as a set to ensure uniform wear and proper clearances.