
Product Overview
This high-performance thermostat is engineered for the Cummins N14 diesel engine, a cornerstone of heavy-duty industrial and commercial applications worldwide. As a trusted supplier in the global aftermarket, we ensure this critical cooling system component meets the rigorous demands of construction, agriculture, power generation, and marine operations. We specialize in direct shipping to key industrial hubs across North America, Europe, the Middle East, and Asia-Pacific, supporting the maintenance and uptime of fleets and machinery globally.
Key Features & Benefits
- Precision Engineered: Manufactured to exact OEM specifications and dimensions (OEM Size) for a perfect fit and reliable operation within the N14 cooling system.
- Optimal Engine Temperature: Ensures the Cummins N14 engine reaches and maintains its ideal operating temperature quickly, improving fuel efficiency and reducing wear.
- Enhanced Durability: Constructed from robust materials to withstand high temperatures and pressures, ensuring long service life even in demanding environments.
- Reliable Performance: Helps prevent engine overheating and related damage, protecting your valuable equipment from costly downtime and repairs.
- Global Compliance Ready: Packaged and documented for smooth international logistics and customs clearance.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4973373 |
| Engine Model | Cummins N14 |
| Engine Type | Diesel |
| Type | Thermostat |
| Size | OEM Size |
| Weight | 1 kg |
| Warranty | 6 Months |
| Packing | Plastic bag, Box, Carton |
| Place of Origin | Guangdong, China |
OEM Cross-Reference
This part is a direct replacement for the following OEM part number:
- Cummins: 4973373
Note: Always verify part number compatibility with your specific engine serial number before purchase.
Compatibility
This thermostat is designed specifically for the Cummins N14 diesel engine platform. This engine is commonly found in a wide range of heavy-duty applications, including:
- Construction Machinery: Excavators, bulldozers, loaders, and cranes.
- Agricultural Equipment: Tractors, combines, and irrigation systems.
- Power Generation: Industrial and standby generator sets (Gensets).
- Marine: Auxiliary and propulsion engines for workboats and vessels.
- Material Handling: Large forklifts and port equipment.
Global Supply & Distribution
We are a professional exporter of heavy-duty engine components with a established supply chain to major markets worldwide. Our logistics network ensures efficient delivery to key ports and industrial centers.
- Primary Markets Served: North America (USA, Canada, Mexico), European Union, United Kingdom, Australia, Southeast Asia, Middle East (UAE, Saudi Arabia), and South America.
- Fast Delivery: We offer consolidated sea freight and expedited air freight options to minimize lead times for businesses and distributors.
- Export Expertise: All shipments include complete commercial invoices, packing lists, and necessary certificates for hassle-free customs clearance in your country.
Quality Assurance
We are committed to supplying reliable parts that meet the performance expectations of the global B2B market.
- Manufacturing Standards: Produced in ISO-certified facilities using quality-controlled processes.
- Testing & Inspection: Each batch undergoes machinery testing. Video outgoing-inspection reports are available upon request to verify product condition before shipment.
- Warranty Backed: This part is covered by a 6-month warranty against manufacturing defects, providing peace of mind for your operations.
FAQ
Q1: Is this thermostat a direct fit for my Cummins N14 engine, or will modifications be required?
A1: This is a direct OEM-size replacement part designed for a precise fit. It should install directly into the thermostat housing of the Cummins N14 engine without requiring any modifications, assuming the housing and connecting hoses are in good condition.
Q2: What is the typical operating temperature range for this N14 thermostat?
A2: While the exact opening temperature is a calibrated specification of the OEM design, thermostats for heavy-duty diesel engines like the N14 typically begin to open between 180°F and 195°F (82°C – 91°C) to maintain optimal engine efficiency. For the precise specification, please consult your Cummins engine service manual.
Q3: Do you provide documentation for international import and customs?
A3: Yes. As standard practice for all international B2B orders, we provide full commercial documentation including a detailed proforma/commercial invoice, packing list, and certificate of origin. This ensures smooth processing through your local customs authorities.
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 .