Product Overview

This high-quality engine thermostat is engineered for Isuzu 4HK1 and 6HK1 diesel engines, ensuring precise engine temperature regulation for optimal performance and fuel efficiency. We supply this critical component to a global network of distributors, workshops, and fleet operators, with major markets in North America, Europe, the Asia-Pacific region, and the Middle East.

Key Features & Benefits

• Precision Temperature Control: Maintains optimal engine operating temperature, reducing wear and improving combustion efficiency.
• Enhanced Durability: Manufactured from high-grade materials to withstand high temperatures and pressure cycles for extended service life.
• Reliable Performance: Ensures consistent opening and closing to prevent engine overheating and reduce warm-up times.
• Direct OEM Replacement: Designed to meet or exceed original specifications for a perfect fit and reliable operation.
• Cost-Effective Maintenance: A vital replacement part for preventative maintenance, helping to avoid costly engine damage from overheating.

Technical Specifications

OEM Cross-Reference

This part serves as a direct replacement for the following OEM numbers:

• Isuzu: 8-97300790-3, 8973007903

Compatibility

This thermostat is specifically designed for Isuzu mid-range diesel engines. Common applications include:

• Engine Models: Isuzu 4HK1-TC, 4HK1-TCN, 6HK1-TC, 6HK1-TCN series.
• Vehicle Applications: Fitted in various Isuzu trucks, buses, and industrial power units utilizing these engine families.
• It is recommended to verify the specific engine serial number or existing part number for confirmation before purchase.

Global Supply & Distribution

We are a trusted global supplier for automotive engine components. Our logistics network ensures reliable delivery to key industrial hubs worldwide.

• Worldwide Shipping: We export to all major markets, including North America (USA, Canada, Mexico), the European Union, the United Kingdom, Australia, Southeast Asia, and the Middle East.
• Efficient Logistics: Fast container (FCL/LCL) and air freight options available to major ports and airports.
• Export Expertise: All documentation, including commercial invoices, packing lists, and certificates of origin, is provided for smooth customs clearance in compliance with international trade regulations.
• B2B Focus: We specialize in bulk orders for wholesalers, distributors, and large-scale repair operations.

Quality Assurance

Our commitment to quality ensures you receive reliable parts for your business.

• Manufacturing Standards: Produced following stringent quality control protocols to ensure dimensional accuracy and performance reliability.
• Rigorous Testing: Each thermostat undergoes functional testing to verify proper opening temperature and seal integrity.
• Warranty: Backed by a standard warranty against manufacturing defects. Specific warranty terms are provided with the commercial invoice.

FAQ

Q1: How do I confirm this thermostat fits my specific Isuzu 6HK1 engine?
A1: The best method is to cross-reference the part number currently installed on your engine. Match it with our listed OEM numbers (8-97300790-3 or 8973007903). You can also provide your engine’s model code and serial number for our technical team to verify compatibility.

Q2: What is the typical opening temperature for this thermostat?
A2: This OEM-specification thermostat is designed to begin opening at the factory-set temperature for the 4HK1/6HK1 engine platform, typically around 82-85°C (180-185°F), ensuring optimal engine operating temperature is maintained.

Q3: Do you recommend replacing other components when installing a new thermostat?
A3: As a best practice for cooling system service, we recommend inspecting and potentially replacing the thermostat gasket or O-ring to ensure a proper seal. It is also an ideal time to check the condition of the coolant and pressure cap.

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 .