Product Overview

This high-precision diesel fuel plunger assembly is engineered for professional repair and replacement in heavy-duty truck engines. Designed for global markets, we supply directly from our manufacturing base in Shandong, China, to distributors, workshops, and fleet operators across North America, Europe, the Middle East, and Asia-Pacific, ensuring reliable performance and extended service life for critical fuel injection systems.

Key Features & Benefits

• Premium Material: Manufactured from high-speed steel for exceptional wear resistance and durability under high-pressure conditions.
• Precision Engineering: Ensures accurate fuel metering and consistent injection timing for optimal engine performance and fuel efficiency.
• 100% Professional Testing: Each unit undergoes rigorous quality control and functional testing to meet or exceed OEM specifications.
• Universal Fitment: Designed for broad compatibility across multiple diesel engine models, simplifying inventory for B2B buyers.
• Extended Warranty: Backed by an 8-month warranty, providing confidence in product reliability and longevity.

Technical Specifications

OEM Cross-Reference

This fuel plunger assembly directly replaces the following OEM and aftermarket part numbers, ensuring a perfect fit and function:

• 104163-3720
• 140163-4220
• 105700-51003
• 1041633720 (OE Number)

Compatibility

This plunger assembly is designed for universal fitment in a wide range of heavy-duty diesel truck engines. It is specifically associated with models and injection pumps utilizing the K329, K334, and K336 plunger types. Please verify your existing part number or consult with our technical team for specific engine model and year confirmation.

Global Supply & Distribution

We are a professional exporter with extensive experience in international B2B trade compliance. Our logistics network ensures fast and reliable shipping to major global markets:

• Primary Markets: North America, European Union, Middle East, Southeast Asia, Australia.
• Shipping: Efficient export to major industrial hubs and ports worldwide, including Rotterdam, Los Angeles, Dubai, and Singapore.
• Support: Dedicated export documentation and after-sales support tailored for international distributors and large-scale workshop clients.

Quality Assurance

Our manufacturing process adheres to strict quality control protocols to guarantee part integrity and performance.

• Standards: Produced to meet precise OEM dimensional and material specifications.
• Testing: Every plunger assembly is 100% professionally tested for fit, form, and function before packaging.
• Warranty: This product is covered by a comprehensive 8-month warranty from the date of shipment, covering manufacturing defects.

FAQ

Q: How do I confirm this part is compatible with my specific engine?
A: The most reliable method is to cross-reference the part number stamped on your original or failed plunger assembly with the OEM numbers listed above (104163-3720, 140163-4220, 105700-51003). You can also provide your engine model and injection pump code to our support team for verification.

Q: Is this a direct replacement, or will it require calibration?
A: This is a precision-manufactured direct replacement part. However, as with any critical fuel system component, we recommend that installation and final system calibration be performed by a qualified technician to ensure optimal engine performance and emissions compliance.

Q: What is the typical lead time for orders to [North America/Europe]?
A: For standard container (LCL/FCL) shipments to major ports in North America and Europe, lead times typically range from 25-40 days door-to-door, depending on final destination. Express air freight options are available for urgent requirements.

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 .