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.