Product Overview

This high-quality AD Fuel Injection Plunger, model K125, is a precision-engineered component designed for the reliable repair and replacement of diesel fuel injection systems in car engines. Manufactured in Shandong, China, this standard-size plunger ensures optimal fuel metering and pressure generation. We serve a global B2B clientele, with fast shipping to major markets across North America, Europe, Asia-Pacific, the Middle East, and Africa, supporting your aftermarket and industrial needs.

Key Features & Benefits

• Precision Engineering: Manufactured to OEM standard dimensions (K125) for a perfect fit and seamless installation.
• Durable Construction: Made from high-strength alloy steel to withstand extreme pressure and wear, ensuring a long service life.
• Enhanced Performance: Optimized for efficient fuel atomization and consistent injection timing, leading to improved engine power and fuel economy.
• Reliable Replacement: Directly replaces worn or damaged OE parts, restoring original engine performance and reducing downtime.
• Rigorous Testing: Each unit passes strict quality control checks for dimensional accuracy and surface finish.

Technical Specifications

OEM Cross-Reference

This plunger is designed to meet or exceed the specifications of the following OEM reference numbers:

• Primary OEM No.: PlungerK125
• Model Reference: K125

Note: While this part is commonly used in AD fuel injection pumps, please verify your existing part number against the K125 model to ensure compatibility.

Compatibility

• Engine Application: Car Engine (Diesel)
• System: Fuel Injection Pump (Specifically AD brand pumps)
• Fitment: Standard size plunger for repair/replacement of K125 pump elements.

Global Supply & Distribution

We offer comprehensive global logistics to support B2B orders of all sizes. Our distribution capabilities include:

• Worldwide Shipping: Reliable delivery via DHL, FedEx, EMS, TNT, and UPS.
• Fast Dispatch: Orders are processed and shipped within 3-7 business days.
• Major Markets Served: We regularly supply clients in North America (USA, Canada, Mexico), Europe (Germany, UK, France, Italy), Asia-Pacific (Japan, Korea, Australia), the Middle East (UAE, Saudi Arabia), and Africa.
• Flexible MOQ: Low minimum order quantity of just 4 pieces to accommodate testing and small-scale repairs.

Quality Assurance

• Manufacturing Standard: Produced in a certified facility in Shandong, China, focusing on precision and durability.
• Warranty: Comes with a 3-month warranty against manufacturing defects.
• Customer Service: 24-hour customer service support to assist with technical inquiries and order tracking.
• Testing: Each plunger is inspected for surface finish, dimensional accuracy, and hardness to ensure reliable performance.

FAQ

Q1: How do I confirm this K125 plunger fits my injection pump?
A: Please check the model number stamped on your existing plunger or pump element. If it reads “K125” or “PlungerK125”, this part is a direct replacement. It is a standard size component for AD brand fuel injection pumps used in car engines.

Q2: What is the recommended installation procedure?
A: Installation should be performed by a qualified diesel technician. Ensure the pump housing and all mating surfaces are perfectly clean. Lubricate the new plunger with clean diesel fuel or assembly oil before insertion. Torque all retaining components to manufacturer specifications to prevent binding or leakage.

Q3: What maintenance is required for this plunger to ensure a long service life?
A: The longevity of the plunger depends on fuel quality. Always use clean, high-quality diesel fuel and replace your fuel filter at regular intervals. Contaminants in the fuel are the primary cause of plunger wear. If the engine shows signs of hard starting or poor performance, have the injection pump inspected by a professional.

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 .