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Yuchai Engine Truck Spare Parts YC6G Repair Kit Engine Connecting Rod Bearing Assembly G3WQA-1004007*-H for YUTONG Bus Parts Connecting rod bearing (commonly known as connecting rod bushing)

Yuchai Engine Truck Spare Parts YC6G Repair Kit Engine Connecting Rod Bearing Assembly G3WQA-1004007*-H for YUTONG Bus Parts Connecting rod bearing (commonly known as connecting rod bushing)

The G3WQA-1004007*-H Connecting Rod Bearing is an original equipment (OE) high-strength precision engine bearing designed for use with Yuchai YC6L and YC6G series 6-cylinder diesel engines, including models such as the YC6L-50/60. As a critical component in the bottom-end rotating assembly, it supports the connection between the connecting rod and the crankshaft’s rod journal, enduring extreme dynamic loads, high combustion pressures, and continuous reciprocating motion.

Featuring a steel-back construction with copper-lead alloy lining and advanced tri-metal or quad-metal sputter coating, this bearing delivers exceptional load capacity, anti-scuffing performance, and resistance to fatigue cracking—especially under the high cylinder pressures generated by modern common rail fuel injection systems.

The "-H" suffix indicates an upgraded version introduced in 2026, featuring environmentally compliant materials, sputter-deposited low-friction coatings, and enhanced durability for long-haul transport, mining, and urban transit applications.

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Model:
G3WQA-1004007*-H
Brand:
Yutong Bus Parts

Product Description

Attribute	Description
Part Number (OE)	G3WQA-1004007-H / G3WQA1004007H
Product Name	Connecting Rod Bearing Assembly (Rod Shell Set)
Common Names	Engine Rod Bearing, Big End Bearing, Conrod Bushings
Application Engine	Yuchai YC6L Series (e.g., YC6L-50, YC6L-60), YC6G
Engine Type	Heavy-Duty Diesel, 6-Cylinder Inline
Bearing Material	Steel Back + Cu-Pb Alloy Layer + Tri-/Quad-Metal Sputter Coating
Back Design	Anti-Rotation Tongue (Positive Locating Tab)
Surface Coating	High-Performance Sputter Coating (-H Grade: Low Friction, High Durability)
Size Variants	Standard (STD), Oversize Options: -0.25mm, -0.50mm
Load Capacity	Designed for >180 MPa peak pressure environments
Design Standard	Meets GB/T 19055, ISO 7247, and Yuchai OE specifications

Parameter	Specification
Inner Diameter (ID)	Matches crankpin journal; standard and repair sizes available
Wall Thickness	~2.5–3.0 mm (precision ground for tight oil clearance control)
Oil Groove Configuration	Upper half (cap side) typically features oil hole/groove
Clearance Range (Typical)	0.03 – 0.08 mm (must be measured during installation)
Maximum Operating Temperature	Up to 180°C (short-term peak)
Fatigue Strength	≥180 MPa
Anti-Seizure Performance	Excellent resistance to dry-run conditions due to advanced coating
Environmental Compliance	Lead-free or low-lead formulation (-H grade); meets China VI / Euro V standards
Service Life (B10 Rating)	800,000 – 1,000,000 km under normal operation with proper lubrication