Product Overview

This A831 High-Pressure Plunger, carrying OEM number 131150-4320 (also referenced as 1311504320), is a precision-engineered component designed for the fuel injection system of 240 series engines. As a critical wear part, it ensures optimal fuel delivery and combustion efficiency. Our product is manufactured in Shandong, China, and is available for global shipping, serving major markets including North America, Europe, Southeast Asia, the Middle East, and South America. Designed for direct replacement and repair, this plunger meets strict OEM specifications for reliable performance.

Key Features & Benefits

• High-Pressure Durability: Manufactured from premium alloy steel to withstand extreme pressures within the fuel injection system, ensuring long service life.
• Precision Engineering: Machined to standard size tolerances for a perfect fit and seamless integration with existing pump components.
• OEM Specification: Directly replaces the original part (OEM No. A831 / 131150-4320) without modifications, simplifying repair and maintenance.
• Enhanced Engine Performance: Restores fuel atomization and injection timing, leading to improved power output and reduced fuel consumption.
• Cost-Effective Solution: Offers a high-quality alternative to genuine parts, providing excellent value for fleet maintenance and repair shops.

Technical Specifications

OEM Cross-Reference

This product is a direct replacement for the following OEM part numbers:

• 131150-4320 (Primary)
• 1311504320 (Alternate Format)
• A831 (Model Reference)

Please verify your current part number against the list to ensure compatibility.

Compatibility

This plunger is specifically designed for use in 240 series engines, commonly found in industrial and automotive applications. It is a standard replacement part for fuel injection pumps requiring the A831 plunger assembly.

• Engine Models: 240 Series
• System: Fuel Injection Pump

Global Supply & Distribution

We offer reliable worldwide shipping to support your business needs, regardless of location.

• Shipping Partners: DHL, FedEx, EMS, TNT, UPS.
• Delivery Time: 3-7 days for in-stock items.
• Major Markets: We regularly export to North America (USA, Canada, Mexico), Europe (Germany, UK, France, Italy), Asia-Pacific (Japan, Korea, Australia), Middle East (UAE, Saudi Arabia), and South America (Brazil, Argentina).
• Logistics: Efficient handling ensures fast delivery to major ports and industrial hubs worldwide.

Quality Assurance

Our manufacturing process adheres to strict quality control standards to ensure every part meets performance requirements.

• Manufacturing: Produced in ISO-certified facilities in Shandong, China.
• Testing: Each plunger undergoes dimensional and surface finish inspections before packaging.
• Warranty: Backed by a 6-month warranty against manufacturing defects.
• Support: 24-hour customer service for technical inquiries and after-sales support.

FAQ

1. How do I confirm this plunger fits my pump?

Verify the OEM number on your existing plunger. If it matches 131150-4320 or A831, this part is a direct fit. It is a standard-size replacement for 240 series engine fuel injection pumps.

2. What is the recommended installation procedure?

Installation should be performed by a qualified diesel technician. Ensure the pump housing and all mating surfaces are clean and free of debris. Lubricate the plunger with clean diesel fuel or assembly oil before insertion. Follow the manufacturer’s torque specifications for all fasteners.

3. What maintenance is required after installation?

After replacing the plunger, it is crucial to bleed the fuel system to remove any air. Check for fuel leaks around the pump. Regularly inspect the fuel filter and use clean, high-quality diesel fuel to maximize the lifespan of the new plunger and other injection system components.

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 .