4tnv94 4tnv98 Rotor Head 129935-51741 for Yanmar Engine Parts

Product Details

Product Overview

This high-quality Rotor Head, identified by the OEM part number 129935-51741, is specifically designed for integration with Yanmar diesel engine models 4TNV94 and 4TNE98. As a critical component of the fuel injection system, the rotor head ensures precise fuel delivery and optimal combustion pressure within the injection pump.

Manufactured to OEM size specifications, this replacement part is commonly used across a broad spectrum of heavy machinery and industrial equipment, including construction vehicles, agricultural tractors, generator sets, marine engines, and material handling equipment. It is a direct-fit solution for maintaining or restoring the performance of your Yanmar-powered machinery.

Key Features & Benefits

• Precision Engineering: Manufactured to strict OEM dimensional tolerances (OEM Size) to guarantee a perfect seal and correct fuel timing within the injection pump.
• Durable Construction: Built from high-strength materials to withstand the extreme pressures and temperatures found in modern diesel injection systems, ensuring long service life.
• Engine Compatibility: Directly compatible with the Yanmar 4TNV94 and 4TNE98 engine series, which are widely used in industrial and agricultural applications.
• Improved Performance: Restores proper fuel atomization and pump pressure, leading to smoother engine operation, reduced smoke, and improved fuel economy.
• Reliable Sourcing: Supplied by, a brand known for providing dependable aftermarket solutions for diesel engine components.
• Comprehensive Support: Backed by a 6-month warranty and online technical support to assist with installation and troubleshooting.

Technical Specifications

OEM Cross-Reference

This rotor head is a direct replacement for the following OEM part numbers. Please verify your existing part number before ordering to ensure correct fitment.

• Yanmar OEM: 129935-51741
• Alternative Reference: 129935-51740 (Where applicable)

Note: While this part is designed to match OEM specifications, it is an aftermarket replacement part manufactured by, not a genuine Yanmar product unless otherwise specified.

Compatibility

This rotor head is commonly used for the following applications. It is designed for the fuel injection pump on Yanmar diesel engines.

• Engine Models: Yanmar 4TNV94, Yanmar 4TNE98
• Common Applications:
  • Construction Equipment (Mini Excavators, Compact Loaders)
  • Agricultural Machinery (Tractors, Harvesters)
  • Industrial Generators (Gensets)
  • Marine Propulsion Engines
  • Material Handling (Forklifts, Telehandlers)

Global Supply & Distribution

We maintain a robust supply chain capable of handling international orders of all sizes, from single units to bulk wholesale quantities. Our distribution network ensures efficient logistics to major industrial markets worldwide.

• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, France, Netherlands), Asia-Pacific (Australia, Japan, South Korea, Singapore), Middle East (UAE, Saudi Arabia), and Africa.
• Shipping Capabilities: We offer fast and reliable shipping via sea freight (FOB, CIF), air freight (DDP, DAP), and express couriers (DHL, FedEx, UPS) to major ports and industrial centers.
• Trade Compliance: Our team has extensive export experience and ensures all documentation and packaging comply with international trade regulations for engine parts.

Quality Assurance

Quality control is a priority at every stage of production. We ensure that every rotor head meets rigorous standards before it is shipped to our customers.

• Manufacturing Standards: Parts are produced in ISO-compliant facilities in Guangdong, China, using high-grade materials.
• Testing: A Machinery Test Report is provided to verify dimensional and functional performance. Video Outgoing Inspection is also available upon request to verify the condition of the part before shipping.
• Warranty: We stand behind the quality of our parts with a standard 6-month warranty against manufacturing defects. After-warranty service includes online technical support.

FAQ

Q: Is this rotor head a genuine Yanmar part?
A: This part is a high-quality aftermarket replacement manufactured by. It is designed to meet or exceed OEM specifications for the Yanmar 4TNV94 and 4TNE98 engines, but it is not a genuine OEM Yanmar part unless specifically stated in the product listing.

Q: How can I confirm this rotor head fits my injection pump?
A: We recommend checking the part number stamped on your existing rotor head. If it reads 129935-51741 or a very close variant (like 129935-51740), this part is likely the correct replacement. For absolute certainty, please contact our support team with your engine model (4TNV94 or 4TNE98) and the injection pump model.

Q: What is the installation requirement for this component?
A: Replacing a rotor head requires disassembling the fuel injection pump. This is a precision job that should only be performed by a qualified diesel technician on a clean workbench. Proper torque specifications and alignment are critical. We recommend having the pump professionally calibrated after installation.