
Product Overview
This is a genuine OEM crankshaft oil seal designed for Isuzu 4HK1 and 6HK1 series diesel engines. As a leading supplier of heavy-duty engine components, we provide this critical sealing part with global shipping capabilities, serving major markets across North America, Europe, Asia-Pacific, and the Middle East. This seal is essential for maintaining proper oil pressure and preventing leaks in commercial and industrial vehicle applications.
Key Features & Benefits
- OEM Quality: Manufactured to original Isuzu specifications for a perfect fit and reliable performance.
- Superior Sealing: Engineered to withstand high temperatures and pressures within the crankcase, preventing oil leaks and contamination.
- Extended Engine Life: Protects critical engine components by maintaining proper lubrication and preventing dirt ingress.
- Durable Construction: Made from high-grade materials resistant to synthetic and mineral oils, ensuring long service life.
- Optimal Performance: Helps maintain correct oil pressure, contributing to overall engine efficiency and fuel economy.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Type | Crankshaft Oil Seal (Rear/Front Application Specific) |
| Primary Part Number | 8983343390 |
| Alternative Part Number | 8983344820 |
| Compatible Engine Models | Isuzu 4HK1, 6HK1, 6HH1 |
| Material | High-Performance Rubber Compound with Steel Casing |
| Condition | New, Genuine OEM Part |
OEM Cross-Reference
This genuine Isuzu crankshaft oil seal is supplied under the following OEM part numbers:
- Isuzu: 8983343390
- Isuzu: 8983344820
Note: Always verify the specific seal location (front or rear crankshaft) against your engine’s service manual before ordering, as part numbers may correspond to different applications.
Compatibility
This oil seal is compatible with the following Isuzu diesel engine series and their common applications:
- Engine Models: Isuzu 4HK1, 6HK1, 6HH1.
- Vehicle Applications: Commonly found in Isuzu NPR, NQR, FSR trucks, and various industrial & generator set applications powered by these engine families.
- Year Ranges: Applicable for models spanning the 2000s to present, depending on the specific vehicle or equipment. Please confirm compatibility using your engine serial number.
Global Supply & Distribution
We specialize in the international export of genuine and high-quality automotive engine parts. Our logistics network ensures efficient delivery to key industrial hubs worldwide.
- Worldwide Shipping: We ship to all major continents via air and sea freight.
- Major Markets Served: North America (USA, Canada, Mexico), South America, the European Union, the United Kingdom, Australia, Southeast Asia, the Middle East, and Africa.
- Fast Delivery: Consolidated shipments to major ports like Los Angeles, Rotterdam, Singapore, Jebel Ali, and Sydney. Express air options available for urgent requirements.
- Export Expertise: All documentation (Commercial Invoice, Packing List, Certificate of Origin) is provided for smooth customs clearance. We are experienced in INCOTERMS and international trade compliance.
Quality Assurance
We stand behind the quality and authenticity of every part we supply.
- Manufacturing Standard: Produced to original Isuzu engineering specifications (JIS/DENSO standards).
- Certification: Parts are sourced from certified suppliers within the OEM supply chain.
- Testing: Each seal undergoes rigorous quality checks for dimensions, material integrity, and sealing performance.
- Warranty: Backed by a standard 12-month warranty against manufacturing defects from the date of purchase.
FAQ
Q1: How do I know if this seal fits my specific Isuzu 6HK1 engine?
A1: The most reliable method is to cross-reference the part number currently on your engine or listed in your official service manual with our listed OEM numbers (8983343390, 8983344820). Providing your engine’s full serial number can also help us confirm compatibility.
Q2: Is this the front or rear crankshaft seal?
A2: The part numbers 8983343390 and 8983344820 are used for crankshaft seals on the 4HK1/6HK1 engines. The exact position (front or rear) can vary. It is critical to identify the correct seal based on your engine’s breakdown diagram or by consulting a professional mechanic to avoid installation errors.
Q3: What is the recommended installation procedure for this oil seal?
A3: Professional installation is recommended. The procedure typically involves removing the transmission/flywheel (for rear seal) or crankshaft pulley (for front seal), carefully extracting the old seal without damaging the crankshaft sealing surface, cleaning the housing, lubricating the new seal lip with clean engine oil, and pressing it in squarely using the proper tool. Always replace any related gaskets or O-rings during the service.
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 .