
Product Overview
This high-performance forged steel crankshaft is engineered for Isuzu diesel engines, delivering exceptional durability and reliability for demanding industrial applications. As a leading global supplier of heavy-duty engine components, we specialize in serving major markets worldwide, including North America, Europe, the Asia-Pacific region, and the Middle East. This genuine specification crankshaft is designed for excavators, trucks, and other heavy machinery requiring robust power transmission.
Key Features & Benefits
- Premium Forged Steel Construction: Manufactured from high-grade forged steel for superior tensile strength, fatigue resistance, and impact durability compared to cast alternatives.
- Precision Engineering: Machined to exact OEM specifications to ensure perfect fitment, balance, and seamless integration with your engine assembly.
- Extended Service Life: Designed for long-lasting performance under high-stress conditions, reducing downtime and total cost of ownership.
- Optimal Engine Performance: Ensures smooth rotation, minimizes vibration, and maintains efficient power output for critical industrial operations.
- Genuine Quality Replacement: Built to meet or exceed original equipment standards, providing a reliable solution for engine overhauls and repairs.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4HK1 |
| Primary Model | 4HK1 |
| Material | Forged Steel |
| Condition | Genuine / New |
| Application | Excavator, Truck |
| Place of Origin | Japan |
| Minimum Order Quantity (MOQ) | 1 Piece |
| Warranty | 6 Months |
| After Warranty Support | Video Technical Support |
| Selling Units | Single Item |
OEM Cross-Reference
This crankshaft is a direct replacement for the following OEM and alternative part numbers. Always verify compatibility with your specific engine serial number.
- Primary Part #: 4HK1
- Compatible Part #s: 3LB1, 4BA1, 4BB1, 4BC2, 4BD1
- Related Engine Series: J08E, J05E
Compatibility
This forged steel crankshaft is designed for Isuzu diesel engines commonly found in a range of heavy-duty equipment.
- Compatible Engine Models: 4HK1, 3LB1, 4BA1, 4BB1, 4BC2, 4BD1, J08E, J05E series.
- Vehicle & Equipment Application: Primarily used in Isuzu-powered excavators, dump trucks, construction machinery, and industrial power units.
Global Supply & Distribution
We are a trusted partner in the global heavy equipment aftermarket, ensuring timely delivery and expert support for our international B2B clients.
- Worldwide Shipping: We export to all major industrial regions, including North America (USA, Canada, Mexico), Europe (UK, Germany, Netherlands), Asia-Pacific (Australia, Singapore, Japan), and the Middle East (UAE, Saudi Arabia).
- Efficient Logistics: Fast and reliable shipping to major ports and inland logistics hubs. We work with established freight forwarders to ensure cost-effective and timely delivery.
- International Trade Expertise: Experienced in handling all export documentation, customs clearance, and compliance for seamless cross-border transactions.
Quality Assurance
Every component in our inventory meets stringent quality standards to guarantee performance and reliability.
- Manufacturing Standards: Produced to original Japanese engineering specifications, ensuring dimensional accuracy and material integrity.
- Warranty: Backed by a 6-month warranty against manufacturing defects, providing peace of mind for your investment.
- Support: Comprehensive after-sales support, including video technical assistance for installation guidance, is available.
- Inspection: Components undergo rigorous visual and dimensional checks prior to dispatch.
FAQ
Q1: How do I confirm this crankshaft is compatible with my specific Isuzu engine?
A1: The surest method is to cross-reference the part number stamped on your original crankshaft with the compatible numbers listed in the “OEM Cross-Reference” section (4HK1, 3LB1, 4BA1, etc.). Additionally, verify your engine’s model and serial number. If in doubt, contact our technical team with your engine details for confirmation before ordering.
Q2: What are the advantages of a forged steel crankshaft over a cast one for my excavator?
A2: Forged steel crankshafts offer significantly higher strength, fatigue resistance, and durability. For heavy-duty, high-torque applications like excavators that experience constant load variations and stress, a forged crankshaft is essential for long-term reliability, reduced risk of catastrophic failure, and extended overhaul intervals.
Q3: Do you provide any support for installation or troubleshooting?
A3> Yes. We offer dedicated video technical support to assist with installation procedures and basic troubleshooting. This service is available during and after the warranty period to ensure you can complete your engine rebuild successfully 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 .