Product Overview

We supply premium-quality, genuine inlet and exhaust valve sets engineered for Isuzu 4HK1 and 6HK1 diesel engines. As a leading global supplier of heavy-duty engine components, we ensure reliable performance for commercial vehicles and industrial machinery worldwide. Our products are shipped directly to major markets including North America, Europe, Asia-Pacific, and the Middle East, supporting the maintenance and overhaul needs of fleets, workshops, and distributors.

Key Features & Benefits

• Genuine Quality: Manufactured to original Isuzu specifications, ensuring perfect fit, optimal sealing, and reliable engine performance.
• Superior Durability: Constructed from high-grade, heat-resistant alloys to withstand extreme combustion chamber temperatures and pressures.
• Precision Engineering: Exact dimensional tolerances guarantee proper seating and alignment, preventing compression loss and valve train issues.
• Enhanced Performance: Maintains factory-engineered airflow for efficient combustion, supporting fuel economy and power output.
• Complete Set Solution: Includes all necessary valves for a full cylinder head service, streamlining procurement and ensuring component compatibility.

Technical Specifications

OEM Cross-Reference

This genuine valve set corresponds directly to the following Isuzu OEM part numbers:

• Primary Part Numbers: 551000125WT (Inlet), 551100126WT (Exhaust)
• These are the official factory numbers for the complete valve assembly set for the specified engines.

Compatibility

This valve set is designed for the following Isuzu engine families and their common applications:

• Engine Models: Isuzu 4HK1-TC, 4HK1-TCN, 6HK1-TC, 6HK1-TCN engines.
• Vehicle Applications: Fitted in various Isuzu trucks and buses, including models like Giga (C/E Series), Forward, and industrial power units.
• Typical Use: Essential for engine overhaul, major service, or repair following valve or seat damage.

Global Supply & Distribution

We specialize in the international export of heavy-duty engine parts with a proven supply chain.

• Worldwide Shipping: We ship to all major continents via air and sea freight.
• Key Markets Served: North America (USA, Canada, Mexico), European Union, United Kingdom, Australia, Southeast Asia, Middle East (UAE, Saudi Arabia), and Africa.
• Efficient Logistics: Fast container and pallet dispatch to major ports like Los Angeles, Rotterdam, Singapore, and Jebel Ali.
• Export Expertise: Full compliance with international shipping documentation, customs, and trade regulations for seamless B2B transactions.

Quality Assurance

• Manufacturing Standard: Produced under strict quality control systems meeting or exceeding ISO standards.
• Certification: Components are genuine, sourced from certified manufacturing channels.
• Testing: Each valve undergoes rigorous dimensional checks, material analysis, and surface finish inspection.
• Warranty: Backed by a standard warranty against manufacturing defects, ensuring peace of mind for our B2B clients.

FAQ

Q1: Is this a complete set for one engine?
A: This listing is for a valve set. Please confirm the quantity with our sales team. A full set for a 4HK1 (4-cylinder) or 6HK1 (6-cylinder) engine includes the corresponding number of inlet and exhaust valves.

Q2: Are these valves ready to install, or is machining required?
A: These are new, genuine valves. However, for any valve replacement, we strongly recommend professional inspection and machining of the cylinder head valve seats to ensure a perfect seal and correct valve clearance. Installing new valves into worn seats will lead to premature failure.

Q3: Do you provide compatibility confirmation for specific chassis/VIN numbers?
A: Yes. While this part is specified for 4HK1/6HK1 engines, we recommend providing your engine serial number or vehicle VIN to our technical support team for final verification before purchase, ensuring 100% fitment for your specific application.

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 .