Yuchai YC6B150Z-T11 Intake Valve D30-1003111B & Exhaust Valve D30-1003103B/C Set for Diesel Engine

Product Details

Product Overview

This high-precision valve set is specifically engineered for Yuchai YC6B150Z-T11 diesel engines, featuring the critical intake valve (OEM D30-1003111B) and exhaust valve (OEM D30-1003103B / D30-1003103C). As a direct replacement for original equipment, these components ensure optimal cylinder sealing, efficient gas exchange, and maximum engine performance. We supply this kit globally, serving major markets including North America, Europe, Southeast Asia, the Middle East, and Africa, with fast shipping from our strategic warehouses.

Key Features & Benefits

• OEM-Grade Precision: Manufactured to meet exact Yuchai factory specifications for seamless fitment and reliable operation.
• High-Temperature Alloy Construction: Exhaust valves built from heat-resistant steel to withstand extreme combustion temperatures, reducing the risk of burning or warping.
• Enhanced Durability: Intake valves feature a hardened chrome-plated stem for superior wear resistance and extended service life.
• Optimized Engine Efficiency: Precise valve geometry improves air-fuel mixture intake and exhaust flow, leading to better fuel economy and reduced emissions.
• Rigorous Quality Control: 100% inspected for dimensional accuracy, surface finish, and hardness before shipment.

Technical Specifications

OEM Cross-Reference

This valve set is a direct replacement for the following original Yuchai part numbers:

• Intake Valve: D30-1003111B
• Exhaust Valve: D30-1003103B, D30-1003103C

Note: The D30-1003103B and D30-1003103C are interchangeable exhaust valve variants. Please verify your engine’s specific requirement.

Compatibility

• Engine Models: Yuchai YC6B150Z-T11, YC6B series diesel engines (including YC6B125Z, YC6B160Z variants where applicable).
• Applications: Excavators, wheel loaders, bulldozers, road rollers, and other heavy construction machinery powered by Yuchai YC6B engines.
• Year Range: Compatible with engine production years 2000-Present (check serial number for confirmation).

Global Supply & Distribution

We are a dedicated supplier of aftermarket and OEM-equivalent engine parts, offering reliable worldwide logistics. Our distribution network ensures fast delivery to major industrial hubs including:

• North America: Los Angeles, Houston, Chicago, Toronto
• Europe: Rotterdam, Hamburg, Antwerp, Felixstowe
• Asia-Pacific: Shanghai, Singapore, Dubai (Jebel Ali), Sydney
• Middle East & Africa: Dubai, Jeddah, Durban, Lagos

We manage all export documentation and customs compliance, offering flexible shipping options (FOB, CIF, DDP) to meet your procurement needs. Bulk orders and mixed container shipments are welcome.

Quality Assurance

• Manufacturing Standard: Produced in ISO 9001:2015 certified facilities.
• Material Certification: Mill test certificates available upon request for each batch.
• Testing: Each valve undergoes dimensional inspection, surface hardness testing, and magnetic particle inspection (MPI) for cracks.
• Warranty: 12 months from the date of shipment against manufacturing defects under normal use and service conditions.

FAQ

Q1: Are these valves a direct fit for my Yuchai YC6B150Z-T11 engine, or do I need additional parts?
A: Yes, these valves are a direct OEM replacement. You will need to install them with compatible valve guides, seals, and springs. We recommend replacing the valve stem seals simultaneously for optimal performance.

Q2: What is the difference between the D30-1003103B and D30-1003103C exhaust valve?
A: Both part numbers refer to the same physical exhaust valve. The suffix (B vs C) typically indicates a minor engineering revision or a change in the supply chain batch. Either one is functionally identical and fully interchangeable for the YC6B150Z-T11 engine.

Q3: What is the recommended installation procedure for these valves?
A: Installation should be performed by a qualified technician. Key steps include: 1) Clean the valve guide bore thoroughly. 2) Lubricate the valve stem with clean engine oil before insertion. 3) Ensure proper valve lash (clearance) is set according to the Yuchai service manual after installation. Failure to set correct clearance can lead to premature valve or seat failure.