Product Details
Product Overview
This high-quality Common Rail Fuel Injector (OEM: 232-1172 / 2321172) is a direct replacement part specifically engineered for Caterpillar 3408E and 3412E diesel engines. Manufactured from premium stainless steel, this injector ensures reliable fuel delivery and optimal engine performance. We are a leading global supplier of heavy-duty engine components, serving major markets across North America, Europe, Asia-Pacific, the Middle East, and Africa with fast and reliable shipping from our distribution centers in Shandong, China.
Key Features & Benefits
- Precision Engineering: Manufactured to meet or exceed OEM specifications for a perfect fit and seamless operation.
- Superior Durability: Constructed from high-grade stainless steel to resist corrosion and withstand extreme combustion pressures and temperatures.
- Enhanced Performance: Optimized nozzle design ensures precise fuel atomization, leading to improved fuel efficiency, reduced emissions, and increased engine power.
- 100% Reliability: Every unit undergoes rigorous professional testing to guarantee flawless performance and a long service life.
- Cost-Effective Solution: A premium aftermarket alternative to expensive OEM parts, offering significant savings without compromising on quality.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 232-1172 / 2321172 |
| Part Type | Common Rail Fuel Injector Nozzle |
| Engine Application | Caterpillar 3408E, 3412E |
| Fuel Type | Diesel |
| Material | Stainless Steel |
| Condition | New |
| Quality Control | 100% Professional Tested |
| Warranty | 6 Months |
| Packaging | Neutral Package (Secure & Professional) |
| Minimum Order Quantity (MOQ) | 4 Pieces |
OEM Cross-Reference
This fuel injector is a direct replacement for the following original equipment manufacturer (OEM) numbers:
- Caterpillar OEM: 232-1172, 2321172
Compatibility
This injector is specifically designed for use in the following Caterpillar engine models:
- Caterpillar 3408E – Heavy-duty industrial and marine engines.
- Caterpillar 3412E – High-performance industrial, marine, and generator set engines.
Please verify your engine’s serial number to ensure compatibility before purchasing.
Global Supply & Distribution
We are committed to serving the global heavy-duty parts market. Our extensive logistics network ensures fast and reliable delivery to:
- North America: Major ports including Los Angeles, Houston, New York, and Vancouver.
- Europe: Key hubs like Rotterdam, Hamburg, and Antwerp.
- Asia-Pacific: Direct shipping to Singapore, Dubai, and major Australian ports.
- Middle East & Africa: Efficient service to Jebel Ali, Dammam, and Durban.
We offer flexible shipping options (3-7 days delivery) and accept payments via T/T, Western Union, and PayPal. Our team has extensive experience in international trade and customs compliance.
Quality Assurance
Your confidence is our priority. We adhere to strict quality control standards:
- Manufacturing: Produced in ISO-compliant facilities using advanced machining processes.
- Testing: Each injector is 100% professionally tested for flow rate, spray pattern, and pressure integrity before shipment.
- Warranty: We back our product with a 6-month warranty against manufacturing defects.
FAQ
Q1: Is this injector a direct fit for my Caterpillar 3412E engine?
A: Yes, this injector (232-1172) is an OEM-spec replacement designed for the Caterpillar 3408E and 3412E engines. We recommend checking your engine’s specific serial number to confirm compatibility, as there may be variations in injector sub-types.
Q2: What is the recommended installation procedure for this injector?
A: Installation should be performed by a qualified diesel mechanic. Key steps include: 1) Thoroughly cleaning the injector bore in the cylinder head. 2) Replacing the copper washer and O-rings. 3) Torquing the injector clamp to the manufacturer’s specification. 4) After installation, the high-pressure fuel system must be primed to remove air before starting the engine.
Q3: How can I ensure the longevity of this injector?
A: Longevity is maximized by using clean, high-quality diesel fuel and maintaining your fuel filters regularly. It is also critical to replace the fuel return line and seals during installation to prevent contamination. If you experience rough idling or black smoke, have the injector’s return flow rate checked by a professional.
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
Caterpillar 3408E/3412E Common Rail Injector 232-1172 2321172 Diesel Fuel Nozzle
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.