Yanmar 4TNV94HFT Cylinder Head | OEM Size Diesel Engine Part for Construction/Agriculture

Product Details

Product Overview

This premium cylinder head is specifically engineered for the Yanmar 4TNV94HFT diesel engine, a widely used power unit in construction, industrial, agricultural, generator set, marine, and material handling equipment. Manufactured to OEM specifications (OEM Size), this component ensures precise fitment and reliable performance in demanding working conditions.

The 4TNV94HFT cylinder head serves as the critical sealing component for the combustion chamber, housing the valves, injectors, and cooling passages. Designed for direct replacement, it restores engine compression and efficiency, making it an ideal solution for engine overhauls or repairs. While primarily compatible with the 4TNV94HFT model, it may also suit other Yanmar engine variants with similar architecture—always verify compatibility with your specific engine serial number before installation.

Key Features & Benefits

• OEM Specification Fitment: Manufactured to original equipment size standards, ensuring seamless bolt-on installation without modifications.
• Precision Engineering: Cast from high-grade alloy iron for dimensional stability and resistance to thermal stress under heavy loads.
• Enhanced Durability: Heat-treated and stress-relieved to withstand high combustion pressures and temperature cycles typical in diesel applications.
• Leak-Free Performance: Precision-machined sealing surfaces reduce the risk of coolant or oil leaks, extending engine service life.
• Broad Application Range: Suitable for construction machinery (excavators, loaders), agricultural tractors, generator sets, marine propulsion, and forklifts.
• Complete Valve Train Ready: Includes pre-installed valve guides and seats where applicable, reducing assembly time.
• Rigorous Quality Control: Each unit undergoes dimensional inspection and pressure testing to meet international standards.

Technical Specifications

OEM Cross-Reference

This cylinder head is manufactured as a direct replacement for the following Yanmar OEM part numbers (verify compatibility with your engine serial number):

• Primary OEM Reference: Yanmar 4TNV94HFT Cylinder Head Assembly
• Alternative Part Numbers: 119650-42020, 119650-42021, 119650-42030 (cross-reference may vary by supplier—please confirm)

Note: While products are designed to match OEM specifications, they are aftermarket replacement parts not affiliated with Yanmar Co., Ltd.

Compatibility

This cylinder head is commonly used for:

• Engine Models: Yanmar 4TNV94HFT, 4TNV94L, 4TNV98, 4TNE94 (verify with engine code)
• Applications: Construction equipment (mini excavators, compact loaders), agricultural tractors (Yanmar, John Deere compact models), generator sets, marine engines, forklifts, and industrial pumps.

Note: Fitment is inferred based on engine family. Always cross-reference your engine serial number and cylinder head casting number before ordering.

Global Supply & Distribution

We offer worldwide shipping from our distribution hub in Guangdong, China, serving major industrial markets including North America, Europe (EU), Asia-Pacific, Middle East, Africa, and Latin America. Our logistics network ensures fast delivery to major ports (Los Angeles, Rotterdam, Shanghai, Dubai) and industrial centers via sea, air, or express courier.

With extensive export experience, we comply with international trade documentation requirements, including commercial invoices, packing lists, and certificates of origin. Bulk orders and customized packing solutions are available for B2B clients.

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001-certified facilities with strict process control.
• Testing: Each cylinder head undergoes dimensional checks, pressure testing for cracks, and surface flatness verification.
• Warranty: 6-month warranty against manufacturing defects. After-warranty service includes online technical support.
• Documentation: Machinery test report and outgoing video inspection provided upon request.

FAQ

Q1: Is this cylinder head a direct replacement for the original Yanmar part?
A1: Yes, this cylinder head is manufactured to OEM size specifications for the 4TNV94HFT engine. It is designed as a direct bolt-on replacement. However, we recommend comparing your old cylinder head’s casting number and measuring critical dimensions (valve guide height, deck surface flatness) to ensure exact compatibility, as engine variants may exist.

Q2: What additional parts should I replace when installing a new cylinder head?
A2: For optimal performance, we recommend replacing the cylinder head gasket, head bolts (always use new torque-to-yield bolts), valve stem seals, and coolant. Clean the engine block deck surface thoroughly. Torque the head bolts in the specified sequence and steps per the Yanmar service manual for the 4TNV94HFT engine.

Q3: How do I verify the quality of this aftermarket cylinder head?
A3: We provide a machinery test report and video inspection of your actual unit before shipment. The head is pressure-tested for leaks and checked for flatness (typically within 0.05mm). All valve guides and seats are inspected for concentricity. If you have specific quality requirements, please contact our sales team for additional testing protocols.