Product Overview

This high-precision A-Type fuel injection plunger is engineered for professional diesel engine repair and overhaul applications. Designed as a direct replacement for OEM part number 9401083503, it is manufactured to exacting standards to ensure optimal fuel delivery and engine performance. We supply this critical component to a global network of workshops, distributors, and heavy equipment operators, with reliable shipping to major markets worldwide including North America, Europe, the Middle East, and Asia-Pacific.

Key Features & Benefits

• Precision Manufacturing: Manufactured with tight tolerances for a perfect fit and consistent fuel metering, ensuring smooth engine operation and reduced emissions.
• High-Durability Material: Constructed from wear-resistant alloys to withstand high-pressure fuel injection cycles, extending service life and reliability.
• Direct OEM Replacement: Designed as a 1:1 match for the original part, guaranteeing seamless integration into the fuel injection pump without modification.
• Performance Restoration: Effectively restores fuel system pressure and volumetric efficiency, addressing power loss and poor fuel economy in diesel engines.
• Global Logistics Support: Packaged for secure international shipment, with fast delivery via major carriers like DHL, FedEx, and UPS to keep your operations running.

Technical Specifications

OEM Cross-Reference

This plunger is a direct cross-reference for the following part numbers. It is compatible with injection pumps designed for these OEM references.

• 9401083503 (Primary OEM Number)
• 9083-503
• 9 401 083 503

Compatibility

This A-Type plunger is designed for use in various diesel engine fuel injection pumps. It is a critical wear component commonly used in:

• Application: Fuel Injection Pumps for industrial, automotive, and heavy machinery diesel engines.
• Typical Use: Repair and overhaul of inline and distributor-type diesel injection pumps.
• Note: For precise fitment, always verify the pump model and existing part number against the OEM cross-reference list above. Consult the pump manufacturer’s documentation for specific engine model applications.

Global Supply & Distribution

We are a specialized supplier of diesel engine components with extensive experience in international B2B trade. Our logistics network ensures efficient delivery to key industrial regions globally.

• Worldwide Shipping: We ship via DHL, FedEx, UPS, TNT, and EMS to virtually any destination.
• Major Markets Served: We regularly supply partners in North America (USA, Canada, Mexico), the European Union, the United Kingdom, Australia, the Middle East (UAE, Saudi Arabia), and Southeast Asia.
• Fast Delivery: Standard delivery to major ports and logistics hubs typically within 3-7 days after dispatch.
• Export Compliance: All shipments are prepared with complete commercial documentation (invoice, packing list, certificate of origin) to ensure smooth customs clearance.

Quality Assurance

Every component is produced under strict quality control protocols to meet the demands of professional engine rebuilders.

• Manufacturing Standards: Produced in ISO-certified facilities using CNC precision machining for consistent quality.
• Warranty: Backed by a 6-month warranty against manufacturing defects, providing confidence in your purchase.
• Testing: Undergoes dimensional inspection and surface finish analysis to ensure it meets original equipment specifications for fit and function.

FAQ

Q1: How do I confirm this plunger is the correct part for my injection pump?
A1: The most reliable method is to match the part number stamped on your original plunger or listed in your pump’s service manual with our OEM cross-reference numbers (9401083503, 9083-503). If unsure, provide the pump model and engine details for verification.

Q2: What is the recommended procedure for installing this new plunger?
A2: Installation should be performed by a qualified technician. The fuel injection pump must be disassembled in a clean environment. The new plunger and its mating barrel should be installed as a matched pair if specified by the pump manufacturer. Always follow the OEM service manual for torque specifications, lubrication, and calibration procedures.

Q3: What are the signs that my diesel engine needs a fuel injection plunger replacement?
A3: Common symptoms include hard starting, loss of engine power, excessive black or white smoke, rough idle, and poor fuel economy. These indicate wear in the fuel injection system, where the plunger and barrel are critical components affecting pressure and fuel delivery.

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 .