Product Overview

This genuine 4372039 Main Control Valve is a critical hydraulic component designed for Hitachi ZX200 and ZX330 series excavators. As a professional supplier to the global heavy machinery aftermarket, we ensure this main relief control valve meets or exceeds OEM specifications. We specialize in direct shipping to major industrial hubs across North America, Europe, the Asia-Pacific region, and the Middle East, supporting the maintenance needs of fleet operators and equipment dealers worldwide.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM tolerances for reliable pressure regulation and smooth hydraulic system operation.
• Enhanced Durability: Constructed from high-grade materials to withstand high pressure cycles and resist wear, ensuring long service life.
• Optimal Performance: Maintains consistent hydraulic pressure, protecting the pump and other components from damage due to pressure spikes.
• Direct Fit Replacement: Designed for seamless installation without modifications, minimizing equipment downtime.
• Rigorously Tested: Each valve undergoes stringent quality checks to verify pressure settings and leak-free operation before shipment.

Technical Specifications

OEM Cross-Reference

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

• Hitachi: 4372039

Please verify your machine’s serial number for the most accurate fitment. This valve may also be compatible with equivalent control valves in similar Hitachi excavator models.

Compatibility

This main control valve is engineered for compatibility with the following Hitachi excavator series:

• Hitachi ZX200 Series Excavators (Multiple production years)
• Hitachi ZX330 Series Excavators (Multiple production years)

Note: Always cross-reference the part number (4372039) from your original valve or equipment service manual to confirm compatibility for your specific machine configuration and serial number range.

Global Supply & Distribution

We are a trusted global partner for construction and mining equipment parts. Our logistics network is optimized for efficient international B2B trade.

• Worldwide Shipping: We export to all major markets, including North America (USA, Canada, Mexico), Europe (UK, Germany, Poland), Asia-Pacific (Australia, Japan, Singapore), and the Middle East (UAE, Saudi Arabia).
• Fast Delivery: Consolidated shipments ensure cost-effective and timely delivery to major ports and inland freight hubs.
• Export Expertise: All documentation, including commercial invoices, packing lists, and certificates of origin, is prepared in full compliance with international trade regulations.
• Bulk Order Support: Specialized logistics and competitive pricing available for container (FCL) and palletized (LCL) orders for dealers and large fleet operators.

Quality Assurance

Our commitment to quality ensures you receive reliable parts that perform under demanding conditions.

• Manufacturing Standard: Produced following strict quality control protocols to match OEM design and performance benchmarks.
• Performance Testing: Each unit is functionally tested to verify correct pressure relief settings and integrity.
• Warranty: Backed by a comprehensive warranty against manufacturing defects, providing peace of mind for your investment.
• Certification Ready: Products are supplied with all necessary documentation to support your own quality management systems.

FAQ

Q1: How do I confirm this valve is the correct part for my Hitachi excavator?
A1: The most reliable method is to match the part number. Locate the existing main control or main relief valve on your machine’s hydraulic manifold. The OEM part number (e.g., 4372039) is typically stamped or on a tag. Verify this number matches. Also, confirm your excavator model (ZX200 or ZX330) and serial number.

Q2: What is the primary function of this main control valve?
A2: This valve acts as the main system relief valve. Its critical function is to limit the maximum pressure in the excavator’s main hydraulic circuit. It protects the hydraulic pump, cylinders, and lines from damage caused by excessive pressure, which can occur during overloads or when a cylinder reaches the end of its stroke.

Q3: Is any special procedure required for installation or system priming?
A3: While installation is a direct bolt-on replacement, it is a precision hydraulic component. We recommend the system is properly bled of air after installation. For optimal performance and safety, installation should be performed by a qualified technician following the official Hitachi service manual procedures, which includes checking system pressure settings after installation.

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 .