Product Overview

This high-performance cylinder piston kit is engineered for Yanmar 4D84-3 and 4TNV84 series diesel engines. Designed as a direct replacement for OEM part numbers 129902-22081 and 129002-22090, it is manufactured to meet or exceed original specifications for durability and power output. We specialize in global B2B supply, serving major industrial markets across North America, Europe, Asia-Pacific, and the Middle East with reliable shipping and export compliance.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM tolerances for a perfect fit and optimal compression.
• Superior Durability: Constructed from high-grade materials to withstand high temperatures and pressures, ensuring long service life.
• Restored Engine Performance: Helps restore factory power, fuel efficiency, and reduces oil consumption in worn engines.
• Complete Kit Solution: Provides all necessary components for a comprehensive piston assembly overhaul.
• Global Quality Standard: Produced under strict quality control systems suitable for international distribution and demanding applications.

Technical Specifications

OEM Cross-Reference

This piston kit directly replaces the following OEM part numbers:

• Yanmar: 129902-22081
• Yanmar: 129002-22090

Always verify part number compatibility with your specific engine serial number before ordering.

Compatibility

This piston kit is designed for use in the following Yanmar engine models:

• Engine Series: Yanmar 4D84-3
• Engine Series: Yanmar 4TNV84

Typical Applications: Commonly found in Yanmar-powered industrial machinery, including generators, pumps, construction equipment, and agricultural tractors. Compatibility is based on engine model, not vehicle type.

Global Supply & Distribution

We are a trusted partner for engine parts distributors and heavy equipment repair shops worldwide. Our logistics network ensures efficient delivery to key industrial hubs.

• Worldwide Shipping: We export to all major markets, including North America (USA, Canada, Mexico), Europe (Germany, UK, Poland), Asia-Pacific (Australia, Japan, Singapore), and the Middle East (UAE, Saudi Arabia).
• Fast Port Delivery: Consolidated container shipments to major ports like Rotterdam, Los Angeles, Singapore, and Jebel Ali for cost-effective regional distribution.
• Export Expertise: All documentation, including commercial invoices, packing lists, and certificates of origin, is prepared to ensure smooth customs clearance globally.

Quality Assurance

We commit to providing reliable components that meet the demands of professional engine rebuilds.

• Manufacturing Standards: Components are produced using advanced machining and metallurgy to match OEM dimensional and material specifications.
• Rigorous Testing: Critical dimensions and material hardness are verified to ensure proper fitment and performance.
• Warranty: Backed by a standard warranty against manufacturing defects. Contact us for specific warranty terms applicable to your region.

FAQ

Q: Is this piston kit a direct fit for my Yanmar 4TNV84 engine?
A: Yes, this kit is engineered as a direct replacement for the specified OEM part numbers in the 4TNV84 and 4D84-3 engine series. For critical rebuilds, we recommend verifying your engine’s serial number and existing piston specifications.

Q: Do you supply the piston rings and wrist pin with this kit?
A: This listing is for a complete cylinder piston assembly kit, which typically includes the piston, rings, wrist pin, and circlips. Please confirm the exact kit contents with our sales team prior to purchase for your specific part number (129902-22081 or 129002-22090).

Q: What is the lead time for delivery to Europe?
A: Standard sea freight to major European ports typically takes 25-35 days. We offer expedited air freight options for urgent requirements. Contact us with your destination port or city for a precise shipping quote and timeline.

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 .