Product Overview

This high-quality A-type diesel plunger, model A281, is designed for precise fuel delivery in automotive diesel engines. Sourced from a leading manufacturer in Shandong, China, this component is engineered for global distribution, serving major markets in North America, Europe, Asia-Pacific, the Middle East, and South America. Each unit is rigorously tested to meet international standards for reliability and performance, ensuring optimal engine efficiency and longevity.

Key Features & Benefits

• Precision Engineering: Manufactured to exacting tolerances for consistent fuel metering and injection pressure.
• Durable Construction: Made from high-grade, wear-resistant materials to withstand extreme operating conditions and extend service life.
• Direct Replacement: Designed as a direct, drop-in replacement for original equipment, minimizing installation time and fitment issues.
• Enhanced Performance: Restores engine power, fuel efficiency, and reduces emissions by ensuring a proper fuel delivery curve.
• Rigorous Quality Control: Each plunger undergoes individual inspection for dimensional accuracy and surface finish.

Technical Specifications

OEM Cross-Reference

This plunger is a direct replacement for the following OEM numbers:

• 131154-3920
• 1311543920
• A281

Note: Always verify compatibility with your specific engine model and injection pump before purchase.

Compatibility

This A281 plunger is specifically designed for use in A-type fuel injection pumps. It is commonly used in a wide range of automotive diesel engines, including those found in trucks, buses, and heavy equipment. While the primary application is for “car engines,” it is suitable for various diesel power units requiring an A-type plunger. Please confirm fitment with your engine’s injection pump specifications.

Global Supply & Distribution

We offer worldwide shipping capabilities to support international B2B buyers. Our logistics network ensures fast and reliable delivery to major ports and industrial centers globally.

• Major Markets Served: North America, Europe (EU), Asia-Pacific, Middle East (GCC), Africa, and South America.
• Shipping Partners: DHL, FedEx, EMS, TNT, and UPS for express delivery (typically 3-7 days).
• Export Experience: We are experienced in international trade, customs documentation, and compliance with global shipping regulations.
• Flexible MOQ: Minimum Order Quantity is 10 pieces, with options for larger bulk orders.

Quality Assurance

We are committed to providing high-quality products that meet or exceed OEM standards.

• Manufacturing Standards: Produced in ISO-certified facilities with strict quality control processes.
• Testing: Each plunger is tested for dimensional accuracy, surface hardness, and leak-proof performance.
• Warranty: Backed by a 6-month warranty against manufacturing defects.
• Customer Service: 24-hour customer service support for inquiries and after-sales assistance.

FAQ

Q1: How do I verify if this A281 plunger (131154-3920) is compatible with my injection pump?
A: Check the part number stamped on your original plunger or your injection pump’s service manual. The key identifiers are the OEM numbers A281, 131154-3920, or 1311543920. If your existing part matches any of these, it is a direct fit. We recommend comparing the overall length and diameter to your original part.

Q2: What is the recommended installation procedure for this plunger?
A: Installation should be performed by a qualified diesel technician. The plunger must be installed in a clean environment to prevent contamination. Ensure the pump barrel is free of debris and lubricate the plunger with clean diesel fuel or assembly oil before insertion. Torque the retaining screws to the manufacturer’s specifications.

Q3: How can I maximize the lifespan of this plunger?
A: Use high-quality, clean diesel fuel and replace your fuel filters regularly. Contaminated fuel is the primary cause of premature plunger wear. Ensure your injection pump has proper lubrication and that the fuel system is free of air. Adhering to the engine manufacturer’s maintenance schedule will significantly extend the life of the plunger and the entire fuel system.

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 .