Product Details
Product Overview
This high-quality A185 fuel injection plunger (OEM number 131153-1020) is engineered for precision performance in Isuzu 6BG1 diesel engines. Designed as a direct replacement for standard fuel injection systems, this component ensures reliable fuel metering and high-pressure delivery. As a leading supplier from Shandong, China, we ship globally to markets across North America, Europe, Asia-Pacific, the Middle East, and Africa, supporting B2B clients with fast, efficient logistics.
Key Features & Benefits
- Precision Engineering: Manufactured to OEM specifications for exact fitment and optimal fuel injection timing.
- Durable Construction: Made from high-grade alloy steel with hardened surfaces to withstand extreme pressures and wear.
- Enhanced Performance: Ensures consistent fuel atomization, improving engine combustion efficiency and reducing emissions.
- Reliable Replacement: Directly replaces worn or failed plungers in 6BG1 fuel injection pumps, restoring engine power and smooth operation.
- Cost-Effective Solution: Offers a high-quality alternative to genuine parts without compromising on performance or lifespan.
Technical Specifications
| Specification | Details |
|---|---|
| Part Number | 131153-1020 / 1311531020 |
| Model Number | A185 |
| OEM Number | A185 |
| Product Name | Plunger (Ad-Type, High-Pressure) |
| Application | Fuel Injection System |
| Condition | New |
| Size | Standard |
| Material | High-Grade Alloy Steel |
| Quality | High-Quality |
| Warranty | 6 Months |
| Packing | Neutral Package (Standard Box) |
| MOQ | 10 Pieces |
| Delivery Time | 3-7 Days |
| Package Size | 25 x 10 x 15 cm |
| Gross Weight | 0.200 kg per piece |
OEM Cross-Reference
This plunger is a direct cross-reference for the following OEM numbers:
- 131153-1020 (Original Isuzu Part Number)
- 1311531020 (Alternate Format)
- A185 (Model/Aftermarket Reference)
Note: This part is designed to meet or exceed original specifications. Always verify your existing part number before ordering.
Compatibility
This product is specifically designed for use in:
- Engine Model: Isuzu 6BG1
- Application: Fuel injection pump assembly in diesel engines
- Vehicle Types: Excavators, industrial machinery, and heavy equipment powered by the 6BG1 engine
Please confirm compatibility with your specific pump model and engine serial number prior to purchase.
Global Supply & Distribution
We offer a robust global supply chain to meet the needs of B2B clients worldwide:
- Worldwide Shipping: Available via DHL, FedEx, EMS, TNT, and UPS.
- Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, France, Netherlands), Asia-Pacific (Japan, South Korea, Australia), Middle East (UAE, Saudi Arabia), and Africa (South Africa, Nigeria).
- Fast Delivery: Standard 3-7 days transit time to major ports and industrial hubs.
- Export Experience: Extensive experience in international trade with full customs compliance and documentation support.
Quality Assurance
- Manufacturing Standards: Produced under strict quality control in ISO-compliant facilities.
- Testing: Each plunger is tested for dimensional accuracy, surface hardness, and pressure resistance before shipment.
- Warranty: Backed by a 6-month warranty against manufacturing defects.
- Customer Service: 24/7 support available to assist with technical inquiries and order tracking.
FAQ
Q: Is this plunger a direct replacement for the original Isuzu 131153-1020 part?
A: Yes, this A185 plunger is manufactured to the same specifications as the OEM 131153-1020 part. It is designed as a direct, drop-in replacement for the Isuzu 6BG1 fuel injection pump. We recommend comparing your old part to ensure dimensional match before installation.
Q: What is the recommended installation procedure for this high-pressure plunger?
A: Installation should be performed by a qualified diesel technician. Ensure the pump housing and bore are clean and free of debris. Lubricate the plunger with clean diesel fuel or assembly oil before insertion. Follow the pump manufacturer’s torque specifications and timing marks. Improper installation can lead to pump damage or engine performance issues.
Q: How can I maximize the service life of this plunger?
A: Use high-quality, clean diesel fuel with proper filtration. Regularly replace fuel filters and water separators as per the engine maintenance schedule. Avoid running the engine with contaminated fuel, as this can cause scoring and premature wear. Following these practices will help the plunger achieve its full operational lifespan.
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
A185 Fuel Injection Plunger 131153-1020 for Isuzu 6BG1 Engine – High-Pressure Diesel Part
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.