- Products
- New Coming
- Deals & New
- Markets
- Resources
- About Us
- Contact Us
 |
3-60 days
Shanghai, Ningbo, as your reqirements
Distributors, Wholesalers
Specific materials, packaging and branding
50-100
IATF 16949/ISO 9001/ISO 14001/CE
12 Months
Brand / Neutral / Customized Packaging
100% T/T in advance
Subject to Credit Vetting and Order Volume
Product Description
This is a premium OE-Quality replacement thermostat for the latest generation of light and medium-duty Cummins engines, crucial for high-efficiency commercial vehicle operation.
Key Part Numbers: Direct OE replacement for 5257076 and 4983736, also frequently cross-references with 5337967.
Target Engine Platforms: Specifically engineered for the modern Cummins ISF2.8 and ISF3.8 diesel engines, powering a large volume of commercial trucks, vans (like Foton), and light machinery globally.
Thermal Control: Calibrated to the factory thermal setting (commonly 180℉ or 82℃), ensuring precise engine temperature management for maximum fuel economy and emissions compliance.
Wholesale Offering: We provide attractive bulk pricing tiers and expert global shipping logistics, enabling importers and large-scale service centers to efficiently manage inventory and reduce maintenance costs for these high-demand applications.
| Product Name | Cummins Thermostat for ISF2.8 ISF3.8 |
| Items Included | 1 X Standard Thermostat |
| TEMP | 82℃（180℉） |
| Features | 100% Tested |
| Warranty | 12 Months |
| Applicaiton | Cummins ISF2.8L/ISF3.8L/QSF2.8L |
| Weight | 2kg |
| Dimension | 10*10*5cm |
| Packaging | Brand / Neutral / Customized Packaging |
| Associated Part Numbers | 4983736/5257076 |
| Component | Primary Part Number | Cross-Reference OE Numbers | Brand | Primary Engine Application | Notes |
| Engine Thermostat | 5257076 | 5337967 | Cummins / DCEC | Cummins ISF2.8 | A key cooling system component for the light-duty ISF series engines, often used in vehicles like the Foton and Gaz. |
| Cummins ISF3.8 | |||||
| Cummins F2.8 CM2620 | |||||
| Cummins QSF2.8 CM2880 |
Elecdura operates advanced production lines for automotive thermostats, ensuring every part meets OEM and aftermarket standards. From assembly to final testing, each step is handled with strict quality control to guarantee consistent performance and reliability.
Elecdura Thermostat Manufacturing Workshop Overview
Quality Control Inspection of Thermostat Manufacturing Process
Engine Thermostat Testing Station in Elecdura Factory
Skilled Workers Assembling Engine Thermostats at Elecdura
Thermostat Assembly Line in Automotive Cooling Parts Factory
Automotive Thermostat Production Equipment in Operation
Elecdura thermostats are produced using high-grade aluminum alloys and reinforced polymer materials, providing excellent resistance to heat and corrosion. Each unit is precisely calibrated to ensure stable temperature control and extended service life across various engine types.
Aluminum engine thermostat housing with polished finish
Close-up of Elecdura thermostat component materials
High-quality automotive thermostat construction details
Reinforced polymer thermostat body with matte surface
Equipped with a wide range of molds, Elecdura can develop new thermostat models quickly to meet diverse OEM and aftermarket demands. We support custom design and private labeling to help our partners expand their product lines efficiently.
Customized thermostat mold development for OEM projects
Thermostat molds and tooling equipment in Elecdura workshop
Every batch of Elecdura thermostats undergoes comprehensive inspection and functional testing. Our production capability supports stable bulk supply for global distributors, ensuring timely delivery and consistent product reliability.
Bulk thermostat products ready for packaging at Elecdura
Rows of finished automotive thermostats in inspection area
Thermostat units arranged for quality verification
ISO 14001
ISO 45001
CE
MSDS
Elecdura collaborates with leading distributors and brands worldwide — helping our partners dominate their local aftermarket. Through professional sourcing, customized product development, and close market research, we've supported clients in becoming the Top 1 aftermarket suppliers in South America. Our integrated marketing and supply capabilities make us more than a factory — we're your strategic growth partner.
Distributor partnership meeting for aftermarket product planning
Successful client collaboration showcased at trade fair booth
Elecdura with international buyer in Brazil Exhibition
Elecdura assisting South American client in aftermarket development
Elecdura team and partners at international auto parts exhibition
Warehouse of Elecdura global partner displaying stocked oil coolers
1. Requirement Discussion
Our sales team will carefully understand your market needs, target vehicle models, and whether the products must meet your country's import standards and certifications, ensuring compliance from the very beginning.
2. Solution & Design
Based on your requirements (such as OEM standards, private labeling, or packaging customization), our engineering team will provide a tailored technical solution and professional advice backed by market experience.
3. Sample Approval
We will provide product samples for your testing. If needed, we can support third-party testing and certification to guarantee legal compliance and suitability in your market.
4. Trial Production
Before mass production, we conduct small-batch production so you can verify stability, compatibility, and collect market feedback, minimizing the risks of large-scale orders.
5. Mass Production
Once approved, we move into bulk production under strict quality control and final inspections, ensuring product consistency across every batch.
6. On-time Delivery
We coordinate the most efficient logistics and customs clearance solutions based on your port or warehouse requirements, making sure the goods arrive safely and on time.
From Latin America to Europe, from Asia to the Middle East, our products are recognized by customers around the globe. By ensuring that every item complies with local regulations and quality standards, we help importers enter their markets with confidence. Let's work hand in hand to open new markets and create long-term success.
Thermostat 5257076 / 4983736 is compatible with Cummins ISF2.8 and ISF3.8 engines, commonly found in light-duty trucks, vans, buses, and industrial machinery. OEM compliance ensures precise coolant temperature regulation and stable engine operation.
High-precision wax element for accurate opening at specified temperature
Stainless steel and brass construction providing corrosion resistance
Compatible OEM housing and gasket interface for leak-free installation
Opening temperature: approx. 87°C – 90°C, optimized for ISF2.8 and ISF3.8 cooling systems
Durable design tolerates repeated thermal cycling and high-pressure coolant environments
These features guarantee stable engine temperature, enhanced cooling efficiency, and long service life.
Engine overheating under normal operation or load
Erratic coolant temperature readings on dashboard gauges
Reduced heater efficiency in passenger or cargo compartments
Coolant leaks near thermostat or housing connections
Timely replacement prevents engine damage, poor cooling performance, and accelerated wear of internal components.
Replace using new OEM gaskets and seals
Thoroughly clean thermostat housing and coolant passages
Apply Cummins torque specifications to prevent leaks or housing distortion
Bleed the cooling system to remove trapped air and verify correct temperature regulation
Proper installation ensures reliable coolant circulation and long-term engine performance.
Elecdura offers wholesale supply, OEM/ODM labeling, and custom packaging for Cummins thermostats, ideal for distributors, fleet maintenance providers, and industrial equipment service companies, providing scalable supply, consistent quality, and brand customization options.
