Product Details
Product Overview
This is a high-performance Fuel Pump Solenoid Valve, engineered as a direct replacement for Caterpillar® heavy machinery. Designed for the demanding conditions of construction and mining, this precision component ensures reliable fuel system operation. We supply this critical part globally, with extensive experience serving major markets across North America, Europe, the Middle East, and Asia-Pacific, ensuring fast delivery to key industrial hubs and ports worldwide.
Key Features & Benefits
- Precision Engineering: Manufactured to exact OEM specifications for a perfect fit and seamless integration into your engine’s fuel injection system.
- Premium Material: Constructed from high-speed steel for exceptional durability, wear resistance, and long service life under high-pressure conditions.
- 100% Professionally Tested: Each unit undergoes rigorous quality control and performance testing to guarantee optimal operation and reliability before shipment.
- Enhanced Performance: Ensures precise fuel metering and timing, contributing to stable engine performance, efficient fuel consumption, and reduced emissions.
- Global Compliance Ready: Packaged and documented for smooth international shipping, adhering to standard export and customs requirements.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 312-5620 |
| OEM Part Number | 3125620 |
| Type | Fuel Pump Solenoid Valve (Injector Component) |
| Application | Fuel Injection System |
| Fuel Type | Diesel |
| Condition | New |
| Material | High-Speed Steel |
| Color | Silver |
| Warranty | 6 Months |
| Package Size | 10 x 10 x 10 cm |
| Weight | 1.000 kg |
| Place of Origin | Shandong, China |
OEM Cross-Reference
This solenoid valve is a direct interchange for the following OEM and aftermarket part numbers:
- CAT: 312-5620, 3125620
- Common Cross-References: 236-0962, 235-2888, 10R-7224
Note: Always verify part number compatibility with your specific engine serial number before purchase.
Compatibility
This part is designed primarily for Caterpillar® diesel engines. Key application includes:
- Engine Model: CAT 320D with 6.4L engine configuration.
- Machine Application: Specifically for the fuel pump assembly on compatible 320D excavators.
- Purpose: For the replacement or repair of a faulty solenoid valve within the fuel injection system to restore proper engine function.
Global Supply & Distribution
We are a professional B2B supplier specializing in diesel engine components for the global heavy equipment market. Our logistics network ensures efficient shipping to all major regions:
- Major Markets Served: North America (USA, Canada), European Union, United Kingdom, Australia, Middle East (UAE, Saudi Arabia), and Asia-Pacific (Singapore, Japan).
- Fast Delivery: We prioritize shipments to major industrial ports and logistics centers, offering reliable air and sea freight options to minimize downtime for your operations.
- Export Expertise: All documentation (commercial invoice, packing list, certificate of origin) is provided professionally to ensure hassle-free customs clearance worldwide.
Quality Assurance
We stand behind the quality and performance of every part we supply.
- Manufacturing Standards: Produced in ISO-certified facilities using precision tooling and high-grade materials.
- Comprehensive Testing: Each solenoid valve is 100% professionally tested for electrical resistance, actuation pressure, and leak integrity to meet or exceed OEM performance parameters.
- Warranty: Backed by a 6-month warranty against manufacturing defects, providing peace of mind for your investment.
FAQ
Q1: Is this a direct fit for my CAT 320D excavator?
A1: Yes, this 312-5620 solenoid valve is a direct OEM replacement designed for the CAT 320D with the 6.4L engine. For absolute certainty, we recommend cross-referencing your machine’s serial number or the part number on your existing valve.
Q2: What are the symptoms of a failing fuel pump solenoid valve?
A2: Common signs include engine hard starting, rough idle, loss of power, intermittent stalling, and irregular engine RPM. In many cases, it will trigger an engine diagnostic trouble code (DTC) related to the fuel system.
Q3: Do you provide technical support for installation?
A3> While we supply the component, installation should be performed by a qualified diesel technician. We can provide general specifications and OEM part diagrams to assist your service team. Always follow the official CAT service manual procedures for safe and correct installation.
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
CAT 312-5620 Fuel Pump Solenoid Valve for 320D 6.4 Diesel Engine
Send one clear inquiry and we will reply with quotation, lead time, and fitment confirmation.
- 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.