4TNE94 4TNE98 Cylinder Head Assembly 129903-11700 for Yanmar Engine Parts

Product Details

Product Overview

This premium Cylinder Head Assembly, identified by OEM part number 129903-11700, is specifically engineered for the Yanmar 4TNE94 and 4TNE98 diesel engine models. As a critical top-end component, this assembly ensures the combustion chamber is properly sealed, maintaining optimal compression ratios and preventing coolant or oil leakage.

Manufactured to OEM size specifications, this cylinder head is a direct replacement for heavy-duty applications. It is commonly used in a variety of industrial and construction machinery, including forklifts, excavators, loaders, bulldozers, and trucks. This part is designed to restore engine performance and reliability in demanding working conditions.

Key Features & Benefits

• Precision Engineering: Manufactured to strict OEM tolerances for a perfect seal and direct bolt-on fitment, reducing installation time and complexity.
• Durable Construction: Built from high-grade cast iron or aluminum alloy (as per OEM spec) to withstand high combustion pressures and thermal stress.
• Immediate Compression Restoration: Replaces worn or cracked cylinder heads to restore lost compression, improving engine power, fuel efficiency, and cold-start performance.
• Complete Assembly: Typically includes valves, springs, and seals (verify upon order) for a comprehensive top-end overhaul solution.
• Reduced Downtime: A reliable replacement part that gets your Yanmar-powered equipment back to work quickly, minimizing costly operational delays.
• Rigorous Quality Control: Every unit undergoes strict dimensional and pressure testing to ensure performance and longevity.

Technical Specifications

OEM Cross-Reference

This Cylinder Head Assembly is a direct equivalent to the following OEM part numbers. Please verify your existing part number for compatibility.

• Yanmar OEM: 129903-11700
• Alternate/Service Part: 129903-11710 (Verify compatibility)

Compatibility

This component is specifically designed for the Yanmar 4TNE94 and 4TNE98 diesel engine models. These engines are commonly found in the following applications:

• Forklifts (e.g., Toyota, Nissan, TCM)
• Excavators (Mini and Mid-size)
• Wheel Loaders
• Bulldozers
• Agricultural Tractors
• Industrial Generators and Pumps
• Other heavy construction equipment

Note: Fitment is based on the specific engine model. Always confirm your engine serial number and existing head casting number before ordering.

Global Supply & Distribution

We maintain a robust supply chain to ensure fast and reliable delivery to industrial centers worldwide. Our global distribution network covers:

• North America: Regular shipments to major ports like Los Angeles, Houston, and New York.
• Europe: Efficient logistics to Rotterdam, Hamburg, and Antwerp.
• Asia-Pacific: Direct distribution from our facility in Guangdong, China, serving Singapore, Japan, Korea, and Australia.
• Middle East & Africa: Reliable shipping to Dubai, Jeddah, and Durban.

We offer flexible shipping options including sea freight (FOB/CIF), air express (DHL, FedEx, UPS), and rail freight for bulk orders. Our team ensures all export documentation is compliant for smooth customs clearance.

Quality Assurance

We are committed to delivering high-quality engine components. Our quality assurance process includes:

• Manufacturing Standards: All parts are produced under ISO 9001 quality management systems.
• Testing: A Machinery Test Report and Video Outgoing Inspection are provided to verify part integrity and dimensions.
• Dimensional Checks: Critical areas such as valve seat concentricity, deck flatness, and guide bore size are strictly inspected.
• Warranty: This part is backed by a 6-month warranty against manufacturing defects in materials and workmanship.

FAQ

Q1: How do I confirm this cylinder head fits my engine?
A: Please verify two things. First, check the engine model plate on your equipment (it should state 4TNE94 or 4TNE98). Second, look for the casting number on your old cylinder head. While 129903-11700 is the standard part, variations may exist. If in doubt, send us a photo of your old part number for cross-verification.

Q2: Does this assembly come with valves and seals installed?
A: This product is a Cylinder Head Assembly. While it generally includes valves, valve springs, and stem seals pre-installed, it is best to confirm the exact configuration with our sales team before purchase. It does not typically include the cylinder head gasket or head bolts, which should be ordered separately.

Q3: What is the recommended procedure for installation?
A: Professional installation is strongly recommended. Key steps include: 1) Thoroughly cleaning the engine block deck surface. 2) Using a new OEM-spec head gasket and new head bolts. 3) Torquing the head bolts in the correct sequence and to the precise specification (ft-lbs/Nm) as outlined in the Yanmar service manual for the 4TNE series. Failure to follow proper torque procedures can cause head gasket failure.