Product Overview

This is a high-precision fuel injector plunger, engineered as a direct replacement for Zexel diesel injection systems. Designed for durability and optimal fuel metering, it is an essential component for engine repair and overhaul. We supply this critical part to a global network of distributors, rebuilders, and heavy machinery workshops, with major markets across North America, Europe, the Middle East, and Asia-Pacific.

Key Features & Benefits

• Premium Material: Manufactured from high-speed steel for exceptional wear resistance and longevity under high-pressure conditions.
• Precision Engineering: Ensures accurate fuel delivery for optimal engine performance, fuel efficiency, and reduced emissions.
• 100% Professional Testing: Each plunger undergoes rigorous quality control and functional testing to guarantee it meets or exceeds OEM specifications.
• Universal Fitment: Designed for seamless integration as a direct replacement part, simplifying the repair process for technicians.
• Reliable Performance: Restores injector function to factory-like performance, ensuring smooth engine operation and reliable power output.

Technical Specifications

OEM Cross-Reference

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

• Primary OE Number: 140163-4220 (1401634220)
• Compatible with Models: K334, K336, K359

Compatibility

This fuel injector plunger is designed for use in Zexel fuel injection pumps and nozzles. It is a critical component for various diesel engines utilizing the K334, K336, and K359 injector models. Commonly found in industrial, construction, and heavy equipment applications. Specific compatibility should always be verified against the original part number (140163-4220) removed from the unit.

Global Supply & Distribution

We are a leading supplier of diesel engine components with extensive export experience. We guarantee compliant international shipping to all major markets.

• Worldwide Shipping: Reliable air and sea freight to North America (USA, Canada), Europe (Germany, UK, Poland), Asia-Pacific (Australia, Japan, Singapore), the Middle East (UAE, Saudi Arabia), and South America.
• Fast Delivery: Efficient logistics ensure prompt delivery to major industrial ports and inland hubs.
• Trade Compliance: All documentation, including commercial invoices and certificates of origin, is provided for smooth customs clearance.

Quality Assurance

Our commitment to quality ensures you receive a reliable part for critical engine repairs.

• Manufacturing Standards: Produced using advanced CNC machinery to achieve precise OEM-level tolerances.
• Comprehensive Warranty: Backed by an 8-month warranty from the date of purchase, covering material and workmanship defects.
• Testing Procedures: Every plunger is subject to dimensional inspection, surface finish analysis, and material hardness testing to ensure it meets strict performance criteria.

FAQ

Q1: How do I confirm this is the correct plunger for my injector?
A1: The surest method is to match the part number. This plunger replaces OEM number 140163-4220. Please compare this number to the one on your original Zexel injector component or consult your engine’s parts manual for models K334, K336, or K359.

Q2: Is any special installation procedure required for this plunger?
A2: Yes. Injector plunger installation requires a clean environment and specialized tools. It must be installed as part of a complete injector overhaul by a qualified technician to ensure proper lubrication, alignment, and setting of injection timing and pressure. Never install a dry plunger into a housing.

Q3: What is the primary cause of plunger failure, and how can I prevent it?
A3: The most common cause is contamination from dirt or water in the fuel. To maximize the life of this and all fuel system components, always use high-quality, clean diesel fuel and maintain fuel filters according to the engine manufacturer’s service schedule.

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 .