Product Details
Product Overview
This is a premium, brand-new Diesel Injection Pump Head Rotor, engineered to meet or exceed OEM specifications for heavy-duty excavator and industrial engines. Designed for global distribution, we supply this critical component to major markets including North America, Europe, Asia-Pacific, and the Middle East, ensuring reliable performance for international B2B buyers and fleet operators.
Key Features & Benefits
- Precision Engineered: Manufactured from High-Speed Steel for exceptional wear resistance and longevity under high-pressure conditions.
- Direct OEM Replacement: Guaranteed fit and function as a direct replacement for the original part, ensuring optimal engine performance and fuel efficiency.
- Certified Quality: Produced under strict ISO 9001:2000 and TS16949 quality management systems, guaranteeing consistency and reliability.
- Enhanced Durability: Precision machining ensures smooth operation within the injection pump, reducing friction and the risk of premature failure.
- Global Logistics Ready: Packaged to meet international shipping standards, with fast dispatch via major carriers like DHL, UPS, and FedEx.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 7123-340R |
| OE / OEM Number | 7123340R |
| Model Number | 7123-340R |
| Type | Injection Pump Head Rotor |
| Material | High-Speed Steel |
| Condition | 100% Brand New |
| Color | Silver |
| Quality Standard | ISO 9001:2000, TS16949 |
| Warranty | 3 Years |
| Single Package Size | 25 x 10 x 15 cm |
| Single Gross Weight | 2.500 kg |
| Place of Origin | Shandong, China |
OEM Cross-Reference
This high-quality pump rotor is a direct cross-reference for the following part numbers, ensuring broad compatibility:
- 7123-340R
- 7123340R (OE Number)
- 7180-550R
- 7180550R
- 344R (Associated Rotor)
Compatibility
This injection pump head rotor is designed for specific diesel injection pumps used in heavy-duty machinery. It is commonly applied in:
- Engine Applications: Compatible with 4-liter and 8.5-liter diesel engine families found in excavators and industrial equipment.
- Primary Use: A critical internal component for specific models of rotary-type diesel injection pumps.
- Note: For precise fitment, always verify the part number stamped on your original pump assembly. Consult your service manual or contact our technical support for application confirmation.
Global Supply & Distribution
We are a professional supplier specializing in the global export of heavy-duty engine components. Our capabilities include:
- Worldwide Shipping: We ship to all major markets via express carriers (DHL, UPS, FEDEX, TNT) and sea freight to key industrial ports.
- Key Markets Served: North America (USA, Canada), European Union, United Kingdom, Australia, Southeast Asia, Middle East, and Africa.
- Fast Delivery: Standard delivery time is 3-7 days for stocked items via express shipping. Bulk orders are efficiently handled through our logistics network.
- Export Expertise: All documentation, including commercial invoices and certificates of origin, is provided for smooth customs clearance worldwide.
Quality Assurance
Every component is backed by our rigorous quality commitment:
- Certified Manufacturing: Production adheres to ISO 9001:2000 and automotive-specific TS16949 standards.
- Comprehensive Warranty: This part is covered by a full 3-year warranty against manufacturing defects.
- Stringent Testing: Components undergo dimensional inspection, material hardness testing, and visual quality control to ensure they meet precise OEM tolerances.
FAQ
Q: How can I confirm this part is compatible with my specific engine model?
A: The most reliable method is to match the part number. Locate the number stamped on your original injection pump or rotor (e.g., 7123-340R, 7123340R). Cross-reference it with our listed OEM numbers. For further assurance, provide your engine model and equipment serial number to our support team.
Q: What is the difference between the 7123-340R and the 7180-550R listed?
A> These are often interchangeable or superseded part numbers for the same functional component within a pump series. The 7123-340R is the primary part number, with 7180-550R being a direct equivalent or related assembly number. Both are valid for ordering this specific rotor.
Q: Is any special installation procedure required for this pump rotor?
A: Yes. Installation of a diesel injection pump rotor is a precision task. It requires a clean environment, proper tools, and calibration of the pump timing and fuel delivery settings after assembly. We recommend installation by a qualified diesel technician to ensure optimal performance and to maintain the validity of the warranty.
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.
- Every submission is stored in WordPress and sent to your admin email.
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Quick Inquiry
OEM 7123-340R Diesel Injection Pump Head Rotor for 4/8.5L Engines
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- OEM number is included automatically when available.
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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.