
Product Overview
This genuine Isuzu valve guide is engineered for the demanding conditions of heavy-duty excavator engines. Sourced from Japan, this critical component ensures precise valve alignment and optimal engine performance. We specialize in the global distribution of high-quality Japanese engine parts, serving major industrial markets worldwide with reliable shipping and expert technical support.
Key Features & Benefits
- Genuine Quality: Authentic Isuzu part manufactured to original specifications for guaranteed fit and performance.
- Enhanced Durability: Precision-engineered from high-grade materials to withstand extreme temperatures and reduce wear, contributing to longer engine life.
- Optimal Engine Performance: Ensures proper valve seating and alignment, maintaining compression, fuel efficiency, and power output.
- Reliable Supply: Directly sourced to ensure authenticity and availability for your maintenance and repair schedules.
- Global Logistics Support: Streamlined export process with experience in international shipping documentation and compliance.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 8-94390780-0 |
| Alternative Part Number | 8943907800 |
| Product Name | Valve Guide |
| Engine Model | 4HK1, 6HK1 |
| Condition | Genuine |
| Place of Origin | Japan |
| Minimum Order Quantity (MOQ) | 1 Piece |
| Selling Units | Single Item |
OEM Cross-Reference
This Isuzu valve guide corresponds to the following OEM part numbers:
- Isuzu: 8-94390780-0 (Primary)
- Isuzu: 8943907800 (Alternative)
This is a direct replacement part designed to match the original component’s dimensions and material properties exactly.
Compatibility
This valve guide is designed for Isuzu 4HK1 and 6HK1 diesel engines, commonly found in the following Hitachi construction machinery models:
- Hitachi ZX200-3 Excavator
- Hitachi ZX240-3 Excavator
- Hitachi ZX330 Excavator
- Hitachi ZX330-5A Excavator
Application: Primarily for excavator trucks and heavy construction equipment. Always verify your engine model and existing part number before purchase.
Global Supply & Distribution
We are a trusted B2B supplier for automotive and heavy machinery parts with a robust international supply chain. Our capabilities include:
- Worldwide Shipping: Efficient delivery to North America, Europe, Asia-Pacific, the Middle East, Africa, and South America.
- Major Port Access: Fast container and air freight services to key logistical hubs including Los Angeles, Rotterdam, Singapore, Dubai, and Sydney.
- Export Expertise: Comprehensive experience with international trade compliance, customs documentation (commercial invoice, packing list, certificate of origin), and Incoterms (FOB, CIF, DAP).
- Bulk & Single Orders: Flexible supply to accommodate both urgent single-unit repairs and large-scale inventory orders for distributors.
Quality Assurance
- Origin & Authenticity: Sourced directly from Japan, ensuring genuine Isuzu quality and specification compliance.
- Warranty: Backed by a 6-month warranty from the date of purchase, covering defects in material and workmanship.
- Post-Warranty Support: Continued assistance available through video technical support for installation guidance and troubleshooting.
- Rigorous Inspection: Each part undergoes quality checks to confirm dimensional accuracy and material integrity before shipment.
FAQ
Q1: How do I confirm this valve guide fits my specific Isuzu 6HK1 engine?
A: The most reliable method is to cross-reference the part number. Please check your engine’s existing valve guide or service manual for the number “8-94390780-0” or “8943907800”. You can also confirm your equipment model (e.g., ZX330-5A) matches our compatibility list.
Q2: What is the advantage of using a genuine valve guide over an aftermarket part?
A: Genuine Isuzu valve guides are manufactured to exact OEM tolerances for bore diameter, length, and thermal expansion properties. This ensures perfect valve alignment, optimal heat dissipation, and prevents issues like valve stem wear, oil consumption, and loss of compression, which are critical for heavy-duty engine longevity.
Q3: Do you provide support for installation and technical questions?
A: Yes. We offer video technical support to assist with installation procedures and answer technical questions. This service is available during and after the warranty period to ensure you can complete repairs correctly and efficiently.
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 .