Product Overview

This high-quality Ad-type plunger, identified by model number A821 and OEM numbers 131150-3320 / 1311503320, is a precision component designed for fuel injection systems in diesel engines. Manufactured in Shandong, China, this part is a direct replacement for standard repair applications. We offer competitive pricing and reliable shipping to major industrial markets worldwide, including North America, Europe, Southeast Asia, the Middle East, and South America. Our logistics network ensures fast delivery via DHL, FedEx, EMS, TNT, and UPS to meet your urgent production or maintenance schedules.

Key Features & Benefits

• Precision Engineering: Manufactured to standard OE specifications for a precise fit and reliable performance in fuel injection systems.
• Durable Construction: Built from high-grade materials to withstand the high pressures and demanding conditions of diesel engine operation.
• Reliable Replacement: Ideal for repairing or replacing worn components, helping to restore engine efficiency and power output.
• Rigorous Testing: Each plunger is inspected to ensure consistent quality and performance before shipment.
• Global Logistics: Stocked for quick dispatch with a standard delivery time of 3-7 days to support your operational needs.

Technical Specifications

OEM Cross-Reference

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

• 131150-3320
• 1311503320

Note: Model number A821 is the primary identifier for this specific part.

Compatibility

This plunger is designed for use in fuel injection systems for standard car and light-duty diesel engines. It is a common replacement part for various engine models where the A821 plunger is specified. Please verify the physical dimensions and application against your original part to ensure correct fitment.

Global Supply & Distribution

• Worldwide Shipping: We ship to all major regions via DHL, FedEx, TNT, EMS, and UPS.
• Major Markets: Our products are supplied to clients across North America, Europe, Southeast Asia, the Middle East, Africa, and South America.
• Fast Dispatch: Standard delivery time is 3-7 days from order confirmation.
• International Trade: We have extensive export experience and can accommodate various payment terms (TT, PayPal, Western Union) and documentation requirements.

Quality Assurance

• Manufacturing Standards: Produced in a controlled facility in Shandong, China, adhering to standard industry tolerances for fuel injection components.
• Warranty: All parts come with a 6-month warranty against manufacturing defects.
• Testing: Each product is inspected for dimensional accuracy and surface quality to ensure reliable operation.

FAQ

Q1: How do I confirm this A821 plunger is the correct part for my engine?
A: Please compare the part number (A821, 131150-3320, or 1311503320) with the number on your original plunger. Also, check the physical dimensions against our specifications (25x10x15 cm package size, 0.2 kg weight) to ensure it matches your application.

Q2: What is the recommended installation procedure for a fuel injection plunger?
A: Installation should be performed by a qualified diesel mechanic. Ensure the working area is extremely clean to prevent contamination. Lubricate the plunger with clean diesel fuel or assembly oil before installation. Refer to your engine’s service manual for specific torque settings and procedures.

Q3: How can I maximize the lifespan of this plunger?
A: The lifespan of a plunger is heavily dependent on fuel quality. Always use clean, high-quality diesel fuel and replace your fuel filters at recommended intervals. Contaminants in the fuel are the primary cause of premature wear in injection system components.