Product Details
Product Overview
This high-performance Fuel Injection Pump Rotor Head HX5 Assembly is a precision-engineered component designed for Yanmar diesel engines, specifically the 4TNV98T model. Manufactured to exacting standards, this new rotor head ensures reliable fuel delivery and optimal engine performance. As a critical part of the fuel injection system, it is ideal for replacement or repair applications worldwide. We serve a global B2B clientele, with regular shipments to markets across North America, Europe, Southeast Asia, and the Middle East.
Key Features & Benefits
- Precision Engineering: Machined to standard 12mm diameter specifications for a perfect fit and reliable sealing.
- High-Performance Material: Constructed from durable alloys to withstand high pressure and wear, ensuring a long service life.
- Direct Replacement: Designed as a direct OE replacement for the HX5 assembly, simplifying the repair process for 4TNV98T engines.
- Enhanced Fuel Efficiency: Restores proper fuel metering and injection timing, contributing to improved combustion and reduced fuel consumption.
- Rigorous Testing: Each unit undergoes quality checks to guarantee performance and reliability in demanding diesel engine applications.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Name | Diesel Injection Pump Rotor Head |
| Part Number / Model | HX5 |
| Engine Application | Yanmar 4TNV98T |
| Type | Injection Pump Head Rotor Assembly |
| Diameter | 12 mm (Standard Size) |
| Condition | New |
| Weight | 3.5 kg (Single Package) |
| Warranty | 4 Months |
| Place of Origin | Shandong, China |
OEM Cross-Reference
- Main Part Number: HX5
- Compatible Assemblies: HX4, HX5
- Engine Series: 4TNV98T
- Note: This rotor head is the direct replacement for the HX5 assembly used in Yanmar fuel injection pumps.
Compatibility
- Engine Models: Yanmar 4TNV98T
- Application: Diesel Engine Fuel Injection System
- Vehicle Type: Industrial diesel engines, construction machinery, agricultural equipment.
Global Supply & Distribution
We provide efficient worldwide shipping solutions to support B2B operations. Our logistics network ensures fast and reliable delivery to major industrial hubs and ports globally.
- Major Markets Served: North America, Europe (EU), Southeast Asia, Middle East, Africa, and Oceania.
- Shipping Capabilities: Express (DHL, FedEx, UPS), Air Freight, and Sea Freight (FCL/LCL).
- Fast Delivery: Standard processing time of 1-3 business days with expedited options available for urgent orders.
- Trade Compliance: Experienced in international export documentation and customs clearance.
Quality Assurance
- Manufacturing Standards: Produced in ISO-certified facilities in Shandong, China.
- Testing: Each rotor head is inspected for dimensional accuracy and surface finish before shipment.
- Warranty: Backed by a 4-month warranty against manufacturing defects.
- Packaging: Secure neutral or OEM packaging to prevent damage during transit.
FAQ
Q1: Is this HX5 rotor head a direct fit for my Yanmar 4TNV98T engine’s injection pump?
Yes, this rotor head is specifically designed as a direct replacement for the HX5 assembly used in Yanmar 4TNV98T engines. It is a standard size (12mm) component that fits the factory injection pump housing without modification.
Q2: What is the recommended installation procedure for this part?
Installation should be performed by a qualified diesel technician. It involves disassembling the injection pump, carefully replacing the old rotor head with the new HX5 unit, ensuring proper alignment and cleanliness. Re-calibration of the pump on a test bench is highly recommended after installation to ensure correct fuel delivery timing and pressure.
Q3: How can I ensure the longevity of this injection pump rotor head?
Longevity depends on fuel quality and system maintenance. Always use clean, high-quality diesel fuel and replace fuel filters regularly. Ensure the entire fuel injection system (including the pump and injectors) is free from contaminants and water to prevent premature wear of the rotor head and other precision components.
Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.
2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.
3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.
4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.
5. Scientific ERP system, easy and fast to locate the parts that customer needs.
6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.
Exhibition

Packing&Shipping

1. Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).
2. Once we get confirmation of payment, we will ship products in 2 days.
3. Our packaging is standard export wooden box or others as your requirement.
4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ
Q1. What is your company major products?
A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.
Q2.What is the MOQ?
A: Normally we can supply any quantity if we have in stock.
Q3. What is your payment term ?
A: We accept Western Union, T/T, Paypal.
Q4. What is the packing ?
A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.
Q5. When can you deliver products after payment ?
A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .
Q6. What can you do to complete order perfectly ?
A: In the beginning , We will communicate with clients in details to understand what they need .
Before packing , We will check the products and send photos to clients .After confirmation ,
We will packing products well to avoid damage . Once we get tracking number ,
We will send it to customer and keep contact in with clients .
FAQ
Common Product Inquiry Questions
How can I confirm this part matches my engine or injector model?
Send the OEM number, engine model, application, or clear product photos. We will help verify the suitable part before quotation.
Can I ask for packing, shipping, and delivery details together?
Yes. You can combine product confirmation, quantity, destination, packing request, and shipment method in one inquiry so the quotation is more complete.
Why is price not displayed on the page?
This catalog is built for B2B inquiry. Final pricing depends on the confirmed part number, quantity, stock situation, and shipping destination.
What information helps you quote faster?
Please include the OEM number, engine model, quantity, destination country, and any packing or shipping preference. This usually speeds up matching and quotation.
Inquiry Desk
Send Product Inquiry
Use this form to ask for fitment, MOQ, delivery time, packing, and shipping support for this product.
- Simple inquiry flow with direct sales follow-up.
- Send OEM number, quantity, or destination in the optional message if available.
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Quick Inquiry
Yanmar 4TNV98T Fuel Injection Pump Rotor Head HX5 Assembly 12mm Diesel Engine Part
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Inquiry Desk
Send Inquiry
Quick contact for this product. OEM number is attached automatically.
- Simple inquiry flow with direct sales follow-up.
- Send OEM number, quantity, or destination in the optional message if available.
- Every submission is stored in WordPress and sent to your admin email.