Product Overview

This is a genuine Zexel fuel injector nozzle plunger, part number 140163-4420, designed for the K336 series. Engineered for precision and durability, this critical component is essential for maintaining optimal fuel injection pressure and spray pattern in diesel engines. We supply this high-quality part to B2B clients worldwide, with major markets including North America, Europe, the Asia-Pacific region, and the Middle East.

Key Features & Benefits

• OEM Quality: Manufactured to original Zexel specifications, ensuring perfect fit and performance.
• Precision Engineering: High-tolerance machining guarantees consistent fuel metering and injection timing.
• Enhanced Durability: Made from hardened, wear-resistant materials to withstand high-pressure fuel cycles and extend service life.
• Optimal Engine Performance: Restores factory-level fuel efficiency, power output, and reduces harmful emissions.
• Reliable Supply: Sourced directly from trusted manufacturers for consistent quality and availability for your fleet or repair business.

Technical Specifications

OEM Cross-Reference

This genuine Zexel part is identified by the following primary number. It is a direct replacement for components bearing this number in fuel injection pumps.

• Zexel: 140163-4420

Compatibility

This plunger is designed for use in Zexel fuel injection pumps of the K336 series. These pumps are commonly found in a range of industrial and commercial diesel engines. For precise application, always verify the pump model and existing part number.

Global Supply & Distribution

We are a leading supplier of critical engine components for the international B2B market. Our logistics network ensures reliable worldwide shipping to major industrial hubs and ports across North America (USA, Canada, Mexico), Europe (Germany, UK, Poland, Italy), Asia-Pacific (Japan, South Korea, Australia, Singapore), and the Middle East (UAE, Saudi Arabia). We offer consolidated container and air freight options with expertise in international trade documentation and compliance, ensuring fast and smooth delivery to your facility.

Quality Assurance

Every plunger is manufactured under strict quality control systems. Components undergo dimensional verification and visual inspection to ensure they meet original performance and tolerance specifications. While specific warranty terms are provided with your commercial order, we stand behind the quality of our parts. Our commitment is to provide reliable components that meet the demands of professional engine rebuilders and fleet operators.

FAQ

Q: How do I confirm this plunger is the correct part for my specific injection pump?
A: The surest method is to match the part number. Identify the existing plunger or pump model number. This part, 140163-4420, is designed for the Zexel K336 pump series. Cross-reference your pump’s service manual or consult with a qualified diesel technician for verification.

Q: What is the critical installation consideration for a nozzle plunger?
A> Absolute cleanliness is paramount. The plunger and its mating bore must be free of any contaminants, dust, or debris. Installation should be performed in a clean environment using proper tools. The component must be lubricated with clean diesel fuel or the specified assembly oil during installation to prevent scoring or galling on initial startup.

Q: Can replacing a worn plunger restore lost engine power and fuel economy?
A> Yes. A worn plunger can lead to reduced injection pressure, poor fuel atomization, and incorrect timing—all of which directly cause a loss of power, increased fuel consumption, and higher emissions. Replacing worn plungers as a set, along with other worn pump components, is often necessary to fully restore engine performance.

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 .