Yuchai YC4A120 Con Rod Connecting Rod Bush – Engine Bearing Set for 4A Series Diesel Engines

Product Details

Product Overview

This high-precision Connecting Rod Bush is specifically engineered for the Yuchai YC4A120 diesel engine. As a critical component of the engine’s rotating assembly, this bush ensures a tight, lubricated fit between the connecting rod and the piston pin, reducing friction and wear. Sourced from a leading manufacturer of heavy-duty engine parts, this component is designed for global distribution, serving markets in North America, Europe, Southeast Asia, the Middle East, and Africa. It is an ideal replacement for maintenance and overhaul of Yuchai-powered construction machinery and agricultural equipment.

Key Features & Benefits

• Precision Engineering: Manufactured to strict OEM tolerances for a perfect interference fit, ensuring optimal oil clearance and reduced vibration.
• Superior Material Composition: Made from high-strength steel backing with a lead-bronze or copper-lead alloy lining for excellent load-bearing capacity and heat dissipation.
• Enhanced Durability: Designed to withstand the high combustion pressures and cyclic loads of the YC4A120 engine, providing extended service life.
• Wear Resistance: The specialized overlay plating provides excellent anti-scuffing properties during initial start-up and break-in periods.
• Direct Fit Replacement: A drop-in replacement part that requires no modification, saving valuable installation time in the workshop.

Technical Specifications

OEM Cross-Reference

• Yuchai Part Number: YC4A120-1004051
• Alternative Reference: 4A-1004051
• Note: This bush is specific to the YC4A120 engine. It is not interchangeable with other 4A series variants without verifying specifications.

Compatibility

• Engine Models: Yuchai YC4A120, YC4A115, YC4A110 (Verify application)
• Vehicle Applications: Yuchai-powered trucks, buses, loaders, excavators, and agricultural tractors.
• Year Ranges: Compatible with engines manufactured from 2005 to present (Ongoing production).
• Note: Always confirm the engine serial number to ensure correct bearing shell size.

Global Supply & Distribution

We offer flexible global logistics solutions to meet the needs of international B2B buyers. Our supply chain supports fast shipment to major ports and industrial centers worldwide.

• Shipping: Express (DHL, FedEx, UPS), Air Freight, and Sea Freight (FCL/LCL).
• Major Markets: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands), Asia-Pacific (Australia, Indonesia, Vietnam), Middle East (UAE, Saudi Arabia), and Africa (Nigeria, South Africa).
• Lead Times: 3-7 days for express, 15-25 days for sea freight.
• Trade Compliance: We provide full export documentation and customs clearance support.

Quality Assurance

• Manufacturing Standard: ISO 9001:2015 certified production facility.
• Testing: 100% dimensional inspection, hardness testing, and visual inspection before packaging.
• Warranty: 12-month warranty against manufacturing defects under normal operating conditions.
• Certification: Material test reports available upon request for bulk orders.

FAQ

Q1: Is this connecting rod bush a direct replacement for the original Yuchai part?
A: Yes, this bush is manufactured to match the OEM dimensions and material specifications for the YC4A120 engine. It is a direct fit replacement intended for standard maintenance and overhaul procedures.

Q2: What is the recommended installation procedure for this bush?
A: The bush should be pressed into the connecting rod small end using an arbor press. After installation, the inner diameter must be reamed or honed to achieve the correct clearance with the piston pin (typically 0.03mm to 0.08mm). Lubricate the pin and bush assembly thoroughly before installation.

Q3: How can I verify the correct part number for my engine?
A: Check the engine data plate or the original part number on the old bush. The YC4A120 engine typically uses a specific bush size. If your engine is a different variant (e.g., YC4A110), please measure the connecting rod bore and piston pin diameter to confirm compatibility before ordering.