Product Overview

This high-quality piston and pin assembly is engineered for the reliable repair and maintenance of Weichai K4100D diesel engines. Designed to meet or exceed OEM specifications, it is a critical component for restoring engine compression, power, and efficiency. We supply this part globally to major industrial markets, supporting the operational continuity of construction, agricultural, marine, and power generation sectors.

Key Features & Benefits

• Precision Engineered: Manufactured to exact OEM dimensions (OEM Size) for a perfect fit and optimal performance within the K4100D engine block.
• Enhanced Durability: Constructed from high-grade materials to withstand the high-pressure and thermal stresses of diesel combustion cycles.
• Restored Engine Performance: Correct piston clearances ensure proper compression, fuel efficiency, and power output, returning your engine to its original specifications.
• Complete Assembly: Includes the piston pin, providing a ready-to-install solution that simplifies the repair process and ensures component compatibility.
• Versatile Application: A vital repair part for Weichai engines used across multiple demanding industries, from construction sites to marine vessels.

Technical Specifications

OEM Cross-Reference

This piston assembly is a direct replacement for the original Weichai part. The primary OEM part number is 190802. Always verify the part number from your original component or engine service manual before ordering to ensure compatibility.

Compatibility

This piston is specifically designed for the Weichai K4100D diesel engine platform. These engines are commonly found in a wide range of heavy-duty applications, including:

• Construction Machinery: Excavators, loaders, bulldozers, and road rollers.
• Industrial & Gensets: Stationary power generators and industrial pump sets.
• Agriculture: Tractors, combine harvesters, and irrigation systems.
• Marine: Auxiliary engines and propulsion systems for workboats.
• Material Handling: Forklifts and port cargo handling equipment.

Global Supply & Distribution

We are a professional exporter of heavy-duty engine components with a robust global logistics network. We efficiently serve B2B clients in all major industrial regions:

• Americas: Fast container shipping to major ports in the USA (Los Angeles, Houston), Canada (Vancouver), and South America (Santos, Callao).
• Europe: Reliable supply to key hubs in the EU (Rotterdam, Hamburg, Antwerp) and the UK (Felixstowe).
• Asia-Pacific: Extensive distribution across Southeast Asia (Singapore, Jakarta), Australia (Sydney, Melbourne), and the Middle East (Jebel Ali, Dammam).
• Africa: Direct shipping to major industrial ports like Durban and Mombasa.

We handle all export documentation, customs compliance, and Incoterms to ensure a smooth international transaction.

Quality Assurance

We partner with ISO-certified manufacturers to guarantee product integrity. Every piston undergoes stringent quality checks.

• Manufacturing Standards: Produced in state-of-the-art facilities in Guangdong, China, adhering to strict quality control protocols.
• Testing & Inspection: Components are subject to machinery testing reports and video outgoing-inspection is available to verify dimensions, material integrity, and finish.
• Warranty: Backed by a 6-month warranty against manufacturing defects, providing confidence in the durability of your purchase.

FAQ

Q1: How do I confirm this piston is the correct part for my specific Weichai K4100D engine?
A: The most reliable method is to match the part number. This piston replaces OEM number 190802. We recommend checking the part number stamped on your original piston or consulting your engine’s official service manual for the correct spare parts list. Providing your engine’s serial number can also help us confirm compatibility.

Q2: Is the piston pin included, and is it pre-fitted?
A: Yes, this listing is for a complete piston with pin assembly. The piston pin is included as part of the unit. It is supplied separately within the packaging and is not pre-installed, allowing for proper lubrication and installation procedures during engine rebuild.

Q3: What should I check during installation to ensure optimal performance and longevity?
A: Professional installation is crucial. Key steps include: verifying the cylinder liner bore is within specification, checking piston ring end-gaps, ensuring proper piston-to-cylinder clearance, and using the correct lubrication during assembly. Always replace piston rings and consider inspecting/replacing connecting rod bearings during a piston replacement for a complete and reliable rebuild.

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 .