Product Details
Product Overview
This high-quality remanufactured fuel injector, part number 173-4059 / 1734059, is specifically engineered for the Caterpillar 3126B diesel engine. As a critical component of the Common Rail fuel injection system, this injector ensures precise fuel delivery for optimal engine performance and fuel efficiency. Our supply chain is globally oriented, serving major markets including North America, Europe, Southeast Asia, the Middle East, and Australia. With a focus on B2B reliability, we offer fast shipping from our Shandong, China facility to major ports and industrial hubs worldwide.
Key Features & Benefits
- Precision Remanufacturing: Restored to meet OEM specifications, ensuring reliable operation and consistent fuel atomization.
- Durable Construction: Built with high-grade stainless steel to withstand extreme pressure and temperature within the combustion chamber.
- Direct Replacement: Designed as a bolt-on replacement for the 173-4059 part number, simplifying the repair process for your Caterpillar 3126B engine.
- Improved Engine Performance: Restores lost power, reduces smoke emissions, and improves overall fuel economy compared to a worn or failed injector.
- Rigorous Testing: Each unit is pressure-tested and calibrated to ensure proper spray pattern and flow rate before shipment.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 173-4059 / 1734059 |
| Condition | Remanufactured |
| Fuel Type | Diesel |
| Type | Common Rail Injector |
| Material | Stainless Steel |
| Application | Diesel Fuel Injection System |
| Engine Code | 3126B |
| Warranty | 3 Months |
| MOQ | 6 Pieces |
| Package Size | 29 x 12.5 x 12.5 cm |
| Gross Weight | 1.500 kg |
OEM Cross-Reference
This fuel injector is a direct replacement for the following original equipment manufacturer (OEM) numbers:
- 173-4059 (Caterpillar)
- 1734059 (Caterpillar)
Compatibility
- Engine Model: Caterpillar 3126B (Diesel)
- Vehicle Application: Heavy-duty trucks, buses, and industrial equipment utilizing the 3126B engine platform.
Global Supply & Distribution
We are committed to serving the global B2B market. Our distribution network ensures reliable and fast delivery to major industrial centers worldwide.
- Worldwide Shipping: Export experience to North America, Europe, South America, Asia-Pacific, and the Middle East.
- Major Ports Served: Efficient logistics to ports like Los Angeles, Rotterdam, Shanghai, and Dubai.
- Trade Compliance: All products are packaged and documented according to international trade standards.
Quality Assurance
- Manufacturing Standard: Remanufactured using precision cleaning, inspection, and assembly processes.
- Testing: Each injector undergoes a comprehensive flow and pressure test to ensure it meets performance criteria.
- Warranty: Backed by a 3-month warranty against manufacturing defects.
FAQ
Q: Is this injector a direct fit for my Caterpillar 3126B engine?
A: Yes, this injector (173-4059) is a direct replacement for the 3126B engine. It is a bolt-on component, but we recommend verifying the part number on your old injector to confirm compatibility.
Q: What is the recommended installation procedure for this remanufactured injector?
A: We recommend replacing the injector hold-down clamp and copper washer. Ensure the injector bore is clean and free of debris. Torque the injector to Caterpillar’s specifications. It is also good practice to replace the fuel return lines and seals during installation.
Q: Do I need to program or calibrate this injector after installation?
A: No, this injector is pre-calibrated for the 3126B engine. However, for optimal performance, it is highly recommended to run the engine’s injector coding procedure using a diagnostic tool if your engine management system requires it.
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
Reman 173-4059 Fuel Injector Common Rail for Caterpillar 3126B Diesel Engine
Send one clear inquiry and we will reply with quotation, lead time, and fitment confirmation.
- OEM number is included automatically when available.
- Add quantity, destination, and packing needs for a faster quote.
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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.