
Product Overview
This genuine Standard piston ring set is engineered for the Isuzu 6HH1 diesel engine, a cornerstone of commercial vehicle fleets worldwide. We specialize in the global supply of high-quality engine components, serving major markets across North America, Europe, Asia-Pacific, and the Middle East. This part is essential for engine overhauls and rebuilds, ensuring optimal compression and oil control for demanding applications.
Key Features & Benefits
- Genuine Quality: Manufactured to exact OEM specifications, ensuring perfect fitment and reliable performance in the 6HH1 engine block.
- Enhanced Durability: Constructed from premium materials designed to withstand high cylinder pressures and temperatures, extending engine life between overhauls.
- Optimal Sealing: Precision-engineered rings provide superior compression sealing and controlled oil scraping, maximizing engine efficiency and power output.
- Reduced Blow-by: Minimizes combustion gas leakage into the crankcase, helping to maintain oil cleanliness and overall engine health.
- Complete Set: Includes all necessary rings (compression and oil control) for a full piston overhaul, simplifying the procurement process for workshops and fleet managers.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 8-94390799-0 |
| OEM Part Number | 8943907990 |
| Alternative Part Number | 8-94390-799-0 |
| Part Type | Piston Ring Set |
| Engine Model | Isuzu 6HH1 |
| Brand | Standard (Genuine) |
| Application | Engine Rebuild / Overhaul |
OEM Cross-Reference
This genuine Standard piston ring set directly replaces the following OEM part numbers:
- 8943907990 (Isuzu)
- 8-94390-799-0 (Alternate Format)
Ensure compatibility by verifying your engine’s model and existing part number prior to ordering.
Compatibility
This piston ring set is specifically designed for the Isuzu 6HH1 diesel engine. This engine is commonly found in a range of Isuzu commercial vehicles, including the FRR series trucks. It is a critical component for engine rebuilds on vehicles used in freight, construction, and industrial sectors globally.
Global Supply & Distribution
We are a leading B2B supplier of automotive engine parts with extensive export experience. Our logistics network ensures efficient worldwide shipping to key industrial hubs and major ports.
- Primary Markets: North America (USA, Canada, Mexico), European Union, United Kingdom, Australia, Southeast Asia, Middle East, and Africa.
- Fast Delivery: Consolidated shipments to major logistics centers ensure timely delivery for your maintenance schedules and inventory needs.
- Trade Compliance: All documentation is prepared in accordance with international trade regulations for smooth customs clearance.
Quality Assurance
Every piston ring set is sourced to meet stringent quality standards.
- Manufacturing Standards: Produced to original equipment (OE) specifications for dimensional accuracy and material integrity.
- Rigorous Testing: Components undergo quality checks to ensure they meet performance criteria for hardness, tension, and finish.
- Warranty: Backed by a standard warranty against manufacturing defects. Please contact us for specific warranty terms applicable to your region.
FAQ
Q1: How do I confirm this piston ring set is compatible with my specific Isuzu 6HH1 engine?
A1: The most reliable method is to cross-reference the part number stamped on your original rings or listed in your engine’s service manual with our listed OEM numbers: 8943907990 or 8-94390-799-0. Verify your engine model is the 6HH1.
Q2: What is included in this “set,” and is it sufficient for a full engine rebuild?
A2: This is a complete piston ring set for one cylinder. It includes all compression rings and oil control rings required for a single piston. For a full 6-cylinder 6HH1 engine rebuild, you will need six (6) identical sets, one for each cylinder.
Q3: What are the critical installation steps to ensure proper performance of these rings?
A3: Proper installation is key. Always ensure the cylinder liner is within specified bore tolerances and properly honed. Follow the manufacturer’s ring gap specification and stagger the ring end gaps during installation. Use appropriate tools to avoid scratching or twisting the rings. Consulting a certified service manual for the 6HH1 is highly recommended.
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 .