Product Overview

This is a premium replacement piston assembly for the Komatsu 4D92 and 4D92E series diesel engines. Engineered to meet or exceed original specifications, this part is essential for engine rebuilds and overhauls in heavy machinery. We supply this critical component globally, with established distribution to major industrial markets in North America, Europe, the Middle East, Asia-Pacific, and Africa, ensuring reliable performance for your fleet anywhere in the world.

Key Features & Benefits

• Precision Engineered: Manufactured to exact OEM dimensions and tolerances for a perfect fit and optimal compression.
• Enhanced Durability: Constructed from high-grade materials to withstand extreme temperatures and pressures within the combustion chamber.
• Complete Assembly: Includes the piston pin, providing a ready-to-install solution that saves time during engine reassembly.
• Restored Engine Performance: Directly contributes to restoring factory power, fuel efficiency, and emission control in compatible engines.
• Reliable Supply: Sourced from a certified manufacturer, backed by full technical documentation and quality assurance reports.

Technical Specifications

OEM Cross-Reference

This piston assembly is a direct replacement for the following OEM part number:

• Komatsu: 6140-31-2113

Please consult your engine manual or contact our technical support to confirm compatibility with specific engine serial number ranges.

Compatibility

Primary Engine Application: Komatsu 4D92 and 4D92E series diesel engines.

Compatible Machinery (Partial List):

• Bulldozers: Komatsu D65PX-15
• Excavators: Komatsu PC200-6
• Cranes: Komatsu GR1200-3
• Also compatible with various Forklifts, Loaders, Trucks, and Buses utilizing the 4D92/4D92E power unit.

Global Supply & Distribution

We are a leading B2B exporter of heavy equipment engine parts with extensive experience in international logistics and trade compliance. Our network ensures efficient shipping to all major global markets:

• Americas: Fast container shipping to major ports in Los Angeles, Houston, Rotterdam, and Santos, with reliable inland distribution.
• Europe & Middle East: Consolidated shipments to key hubs like Antwerp, Hamburg, Dubai, and Jebel Ali.
• Asia-Pacific & Africa: Direct service to Singapore, Sydney, Durban, and Mombasa, supporting mining and construction sectors.

We handle all export documentation, including machinery test reports and certificates of origin, for seamless customs clearance.

Quality Assurance

Every piston is manufactured under strict quality control protocols to ensure reliability.

• Manufacturing Standards: Produced using certified processes that adhere to industry specifications for diesel engine components.
• Warranty: Backed by a 6-month warranty from the date of purchase against manufacturing defects.
• Testing & Inspection: Each batch undergoes rigorous quality checks. A machinery test report and video outgoing-inspection documentation are available upon request to verify product integrity before shipment.

FAQ

Q: How do I confirm this piston will fit my specific Komatsu engine?
A: The primary fitment is determined by the engine model (4D92 or 4D92E) and the OEM part number (6140-31-2113). For absolute certainty, especially for critical rebuilds, we recommend providing your engine’s serial number or the old piston’s casting numbers for our technical team to cross-verify.

Q: Is the piston pin included, and is it pre-fitted?
A> Yes, this listing is for the piston assembly complete with the piston pin. The pin is supplied separately within the package and is not pre-installed, allowing for proper measurement and installation of connecting rods and circlips during the engine rebuilding process.

Q: What documentation supports the quality of this part for international import?
A> We provide full commercial invoices, packing lists, and a certificate of origin. Most importantly, we can supply the machinery test report for the product batch and a video record of the outgoing inspection, which are valuable for quality verification and customs procedures in many countries.

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 .