Hitachi ZX330-3 ZAX330-3 Excavator Oil Pump Assembly 8-94395564-1 8943955641 for Isuzu 4HK1 6HK1 Engine

Product Details

Product Overview

This high-quality Oil Pump Assembly (Part Numbers: 8-94395564-1 / 8943955641) is a direct replacement engineered for Hitachi ZX330-3, ZAX330-3, and SH330-3 excavators powered by the robust Isuzu 4HK1 and 6HK1 diesel engines. Designed for global B2B distribution, this component ensures consistent oil pressure and reliable lubrication, serving heavy machinery markets across North America, Europe, Asia-Pacific, the Middle East, and South America.

Key Features & Benefits

• OEM-Grade Precision: Manufactured to meet or exceed original Hitachi/Isuzu specifications for a perfect fit and seamless performance.
• Enhanced Durability: Constructed from high-strength alloy steel with hardened gears to withstand high pressure and extreme operating conditions.
• Reliable Lubrication: Ensures consistent oil flow and pressure, protecting critical engine components from wear and tear, extending engine life.
• Rigorous Testing: 100% factory tested for flow rate, pressure, and leak integrity before shipment.
• Cost-Effective Solution: Offers a premium aftermarket alternative to the original part, reducing downtime and maintenance costs for fleet operators.

Technical Specifications

OEM Cross-Reference

This oil pump assembly is a direct replacement for the following OEM part numbers:

• Hitachi: 8-94395564-1, 8943955641
• Isuzu: 8-94395564-1, 8943955641
• Cross-References: Also compatible with similar Isuzu engine oil pump assemblies for FVR/FSR truck applications.

Compatibility

• Excavator Models: Hitachi ZX330-3, ZAX330-3, SH330-3
• Engine Models: Isuzu 4HK1, 6HK1, 6HH1
• Truck Applications: Isuzu FVR, FSR series trucks with the same engine family.
• Year Range: Typically fits models manufactured between 2006 and 2015. Please verify your engine serial number for exact fitment.

Global Supply & Distribution

We offer worldwide shipping with reliable logistics partners. Our distribution network covers:

• North America: Fast delivery to USA, Canada, and Mexico via air or sea.
• Europe: Quick shipping to major industrial hubs in Germany, UK, Netherlands, and France.
• Asia-Pacific: Direct supply to Japan, South Korea, Australia, and Southeast Asia.
• Middle East & Africa: Regular shipments to UAE, Saudi Arabia, Qatar, and South Africa.
• South America: Efficient logistics to Brazil, Chile, and Argentina.

We provide express air freight for urgent orders and competitive sea freight for bulk purchases. All shipments are fully insured and tracked.

Quality Assurance

• Certifications: Products are manufactured in ISO 9001:2015 certified facilities.
• Testing: Each oil pump undergoes pressure, flow rate, and dimensional inspection before packing.
• Warranty: 12-month warranty against manufacturing defects.
• Packaging: Securely packed in export-grade cartons to prevent damage during transit.

FAQ

Q1: Is this oil pump a direct replacement for the original Hitachi part?

Yes, this oil pump (8-94395564-1) is a direct aftermarket replacement. It is designed to match the dimensions, bolt pattern, and pressure specifications of the OEM part, ensuring a simple bolt-on installation without modifications.

Q2: What are the common symptoms of a failing oil pump on a 4HK1 engine?

Common signs include low engine oil pressure warning lights, increased engine noise (especially from the valve train), and poor engine performance. If you notice these symptoms, we recommend replacing the oil pump immediately to prevent severe engine damage.

Q3: Do you recommend any specific maintenance after installing this oil pump?

After installation, ensure you use the correct viscosity oil (typically 15W-40 for Isuzu engines) and replace the oil filter. Run the engine at idle for a few minutes to prime the pump and check for leaks. We also recommend verifying oil pressure with a mechanical gauge to confirm proper operation.