
Product Overview
This genuine Isuzu 4HK1 engine oil pump is a critical component designed for reliable performance in demanding excavator applications. We supply this high-quality part globally, with extensive experience serving major industrial markets across North America, Europe, Asia-Pacific, and the Middle East. Our B2B-focused logistics ensure timely delivery to ports and distribution centers worldwide.
Key Features & Benefits
- Precision Engineered: Manufactured to exact OEM specifications for perfect fitment and optimal oil pressure delivery.
- Enhanced Durability: Constructed from high-grade materials to withstand the high-stress environment of heavy-duty engines, ensuring long service life.
- Reliable Performance: Maintains consistent lubrication to protect critical engine components like bearings, camshafts, and turbochargers from wear and failure.
- Direct Replacement: Designed as a direct bolt-on replacement, minimizing downtime during maintenance and repair operations.
Technical Specifications
| Specification | Detail |
|---|---|
| Primary Part Number | 1131003131 |
| Engine Model | Isuzu 4HK1 |
| Component Type | Engine Oil Pump |
| Application | Excavator & Heavy Machinery |
OEM Cross-Reference
This oil pump is compatible with the following OEM and alternative part numbers, ensuring you can source the correct component for your needs:
- 1131003131 (Primary Isuzu Number)
- 1-13100313-1
- 1131003132
- L210-0031b
Compatibility
This oil pump is specifically designed for the Isuzu 4HK1 diesel engine. This engine is commonly found in various models of excavators and other heavy construction machinery from multiple OEMs. Please verify your engine model and existing part number before ordering to ensure correct application.
Global Supply & Distribution
We are a trusted global supplier for heavy equipment parts distributors and repair workshops. Our streamlined export process handles all international trade compliance, ensuring smooth customs clearance. We offer reliable shipping via air and sea freight to major industrial hubs and ports in regions including:
- North America: USA, Canada, Mexico
- Europe: UK, Germany, Netherlands, Poland
- Asia-Pacific: Australia, Singapore, Japan, South Korea
- Middle East & Africa: UAE, Saudi Arabia, South Africa
Quality Assurance
Every oil pump is sourced from certified manufacturers and undergoes rigorous inspection to meet or exceed original performance standards. Our commitment to quality ensures you receive a reliable part that delivers OEM-level performance. All parts are backed by our standard warranty against manufacturing defects.
FAQ
Q: How do I confirm this oil pump fits my specific 4HK1 engine?
A: The most reliable method is to cross-reference the part number currently on your engine’s oil pump or from your equipment’s service manual with the numbers listed in our OEM Cross-Reference section above.
Q: What are the signs that my 4HK1 oil pump needs replacement?
A: Common indicators include low engine oil pressure warnings on the dashboard, unusual engine noise (ticking or knocking from insufficient lubrication), or visible metal particles in the oil filter, suggesting accelerated wear.
Q: Do you provide technical support for installation?
A> While we supply the genuine component, installation should be performed by a qualified technician familiar with Isuzu diesel engines. We recommend following the official service manual procedures, which include priming the pump with oil before installation to prevent dry start-up damage.
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 .