Product Overview

This high-precision cylinder liner is engineered for Komatsu 4D94 and 4D94-3 series diesel engines, a critical component for maintaining engine compression and longevity. As a trusted supplier to the global heavy machinery aftermarket, we ensure this part meets exact OEM specifications for reliable performance in demanding applications worldwide, with seamless shipping to major industrial hubs across North America, Europe, the Middle East, and Asia-Pacific.

Key Features & Benefits

• Precision Manufacturing: Produced to exact OEM dimensions and tolerances for a perfect fit and optimal engine performance.
• Superior Durability: Manufactured from high-grade cast iron alloys to withstand extreme pressures and temperatures, ensuring extended service life.
• Enhanced Heat Dissipation: Optimized design promotes efficient cooling, reducing thermal stress on the engine block and piston assembly.
• Cost-Effective Solution: Provides OEM-level quality and reliability at a competitive price, offering significant value for fleet operators and rebuild shops.
• Ready for Installation: Supplied as a single, finished component, requiring no additional machining for standard rebuilds.

Technical Specifications

OEM Cross-Reference

This cylinder liner directly replaces the following OEM part numbers:

• Komatsu: 6144-21-2211
• Also compatible with systems referencing part numbers for the 3D94 and 4D94-3 engine families.

Compatibility

Compatible Engine Models: Komatsu 3D94, 4D94, 4D94-3 series diesel engines.

Vehicle & Machinery Application: This liner is a vital replacement part for a wide range of Komatsu-powered equipment, including:

• Excavators
• Trucks
• Forklifts
• Bulldozers
• Buses
• Loaders
• And other industrial machinery

Global Supply & Distribution

We specialize in the international export of heavy-duty engine components. Our logistics network is optimized for fast, reliable delivery to key markets:

• Major Markets Served: North America (USA, Canada, Mexico), European Union, United Kingdom, Australia, Southeast Asia, Middle East (UAE, Saudi Arabia), and South America.
• Efficient Logistics: We ship via air and sea freight to all major ports and industrial centers, providing flexible FOB, CIF, or DAP terms to suit your supply chain needs.
• Export-Ready: All shipments are accompanied by full commercial invoices, packing lists, and certificates of origin, ensuring smooth customs clearance worldwide.

Quality Assurance

Every cylinder liner is subject to a rigorous quality control process to guarantee it meets the demanding standards of the heavy equipment industry.

• Manufacturing Standards: Produced in ISO-certified facilities using advanced casting and precision machining processes.
• Comprehensive Testing: Each batch undergoes dimensional checks, hardness testing, and visual inspection. A machinery test report is available.
• Pre-Shipment Verification: Optional video outgoing-inspection is provided for buyer confidence prior to shipment.
• Warranty Backed: Supported by a solid 6-month warranty against manufacturing defects, ensuring peace of mind for our B2B partners.

FAQ

Q1: Is this cylinder liner a direct replacement, or does it require machining?
A1: This is a direct, drop-in replacement manufactured to exact OEM specifications. For a standard engine rebuild, it should not require any additional machining, provided the engine block is within serviceable limits. Always check block bore dimensions before installation.

Q2: Can this liner be used for both the 4D94 and the 4D94-3 engine models?
A2: Yes. This part (6144-21-2211) is designed to be compatible with both the Komatsu 4D94 and 4D94-3 engine families, as well as the 3D94. The core dimensions and specifications are identical across these related models.

Q3: What documentation is provided with the shipment to verify quality?
A3: We provide a machinery test report for the product batch. Upon request, we can also provide a video outgoing-inspection documenting the specific parts in your order before they are packed. All standard export documentation (invoice, packing list, COO) is included for customs clearance.

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 .