Product Overview

This is a genuine-quality Piston Ring Assembly designed specifically for Komatsu 4D94 series diesel engines. As a leading global supplier of heavy machinery engine components, we provide reliable spare parts to major markets worldwide, including North America, Europe, the Asia-Pacific region, and the Middle East. This part is essential for maintaining engine compression, oil control, and overall performance in demanding excavator and construction equipment applications.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM specifications to ensure perfect fit and optimal sealing within the cylinder.
• Enhanced Durability: Made from high-grade materials to withstand high temperatures and pressures, extending service life and reducing downtime.
• Optimal Performance: Restores engine compression, minimizes oil consumption, and helps maintain fuel efficiency for the Komatsu 4D94 engine.
• Reliable Quality: Each assembly undergoes rigorous quality checks to ensure it meets performance and durability standards for heavy-duty operation.

Technical Specifications

OEM Cross-Reference

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

• Komatsu: 6142-32-2020

Please verify your engine’s serial number and existing part for 100% compatibility before ordering.

Compatibility

This Piston Ring Assembly is designed for Komatsu engines utilizing the 4D94 engine block. It is commonly found in a range of Komatsu construction machinery, including:

• Komatsu Excavators (multiple models equipped with the 4D94 engine)
• Komatsu Wheel Loaders
• Other industrial equipment powered by the Komatsu 4D94 diesel engine.

Compatibility can vary by machine model and production year. We recommend consulting your equipment’s service manual or contacting our technical support with your machine model and serial number for confirmation.

Global Supply & Distribution

We specialize in the international export of heavy equipment engine parts. Our logistics network ensures efficient delivery to key industrial hubs and ports globally.

• Worldwide Shipping: We ship to North America, South America, Europe, Africa, the Middle East, Asia, and Australia.
• Major Markets Served: USA, Canada, Germany, UK, UAE, Saudi Arabia, Australia, Japan, South Korea, and Southeast Asia.
• Efficient Logistics: We offer various shipping methods (air, sea) for cost-effective and timely delivery to your nearest port or directly to your facility.
• Export Compliance: All documentation (commercial invoice, packing list, certificate of origin) is provided for smooth customs clearance worldwide.

Quality Assurance

We are committed to supplying parts that meet the high demands of the construction and mining industries.

• Manufacturing Standards: Components are produced following strict quality control protocols to match OEM dimensional and material specifications.
• Warranty: This part is backed by a standard warranty against manufacturing defects. Please inquire for specific warranty terms.
• Testing: Critical dimensions and material hardness are verified to ensure proper function and longevity in the engine.

FAQ

Q: How do I confirm this piston ring set will fit my specific Komatsu machine?
A: The most reliable method is to provide the machine’s model number, engine serial number, and the part number from your old piston ring set. This part (6142-32-2020) is designed for the 4D94 engine family, but confirming with your machine details ensures a perfect match.

Q: Is this a complete set for one piston?
A: Yes, this part number (6142-32-2020) refers to a complete piston ring assembly, which includes all necessary rings (compression rings, oil control rings) for a single piston in a 4D94 engine. A full engine set typically requires multiple assemblies, one for each cylinder.

Q: What are the signs that my Komatsu 4D94 engine needs new piston rings?
A: Common symptoms include excessive blue-tinted smoke from the exhaust (oil burning), a noticeable loss of engine power, increased oil consumption between service intervals, and poor compression test results. A mechanic should perform a proper diagnosis.

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 .