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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 complete, OE-quality replacement thermostat assembly essential for maintaining the cooling system integrity of several early BMW V8 models.
Key Part Number: Direct replacement for BMW OE 11531437526.2 (Supersedes 11531704324).
This kit typically includes the thermostat, housing, and necessary seals.
Engine & Model Coverage: This part is specific to the early, non-VANOS M62 V8 engine (before the technical updates in late 1998/early 1999).
Key applications include:
BMW E39 540i (up to 09/1998 production date)
BMW E38 740i / 740iL (up to 09/1998 production date)
Performance Standard: This is an electrically heated/map-controlled thermostat, designed to manage coolant flow and open at the original factory specification of 105℃（221℉）
Wholesale Offering: We provide highly competitive bulk pricing and reliable global shipping solutions, ensuring importers and distributors can consistently stock this high-wear item for the popular first-generation M62 V8 models.
| Product Name | BMW Thermostat Replacement |
| Items Included | 1 X Standard Thermostat |
| TEMP | 105℃（221℉） |
| Features | 100% Tested |
| Warranty | 12 Months |
| Applicaiton | BMW 540i/740i/740iL |
| Weight | 12.8 ounces |
| Dimension | 5 x 4 x 4 inches |
| Packaging | Brand / Neutral / Customized Packaging |
| Associated Part Numbers | 11531437526/11531704324 |
| Make | Model | Year Range | Engine Type | Body Type | Chassis Note |
| BMW | 540i | 1997 | 4.4L V8 (4398cc) | N/A | N/A |
| BMW | 540i | 1998 | 4.4L V8 (4398cc) | N/A | Thru 08/98 |
| BMW | 540i | 1999 | 4.4L V8 (4398cc) | Sedan | Thru 08/98 |
| BMW | 740i | 1997 | 4.4L V8 (4398cc) | N/A | N/A |
| BMW | 740i | 1998–1999 | 4.4L V8 (4398cc) | N/A | Thru 08/98 |
| BMW | 740iL | 1996–1997 | 4.4L V8 (4398cc) | N/A | N/A |
| BMW | 740iL | 1998–1999 | 4.4L V8 (4398cc) | N/A | Thru 08/98 |
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 Assembly 11531437526 and 11531704324 fit various BMW models, including E39, E46, E53, and 5/7 Series vehicles. The assemblies maintain accurate coolant temperature control and OEM-compliant coolant flow, supporting optimal engine efficiency and performance.
Precision wax element ensures accurate opening and closing at designed temperatures
Durable brass and stainless steel components resist corrosion over extended use
Integrated gasket system guarantees leak-free installation
Opening temperature: approx. 87°C (188.6°F), engineered for BMW cooling systems
Robust housing withstands thermal cycling and high-pressure coolant flow
These design features ensure stable engine temperature, reduced wear, and reliable heating performance.
Engine overheating or abnormal temperature fluctuations
Heater underperformance inside the cabin
Coolant leaks near the thermostat housing
Slow warm-up during cold start
Replacing the thermostat promptly prevents engine overheating, inefficient cooling, and accelerated component wear.
Use new OEM gaskets included with the assembly
Thoroughly clean thermostat housing and coolant passages
Apply BMW-specified torque values to prevent distortion or leakage
Bleed the cooling system to remove trapped air and verify proper operation
Correct installation ensures consistent coolant flow, engine reliability, and optimal performance.
Yes. Elecdura offers wholesale supply, OEM/ODM labeling, and custom packaging, ideal for auto parts distributors, repair workshops, and fleet maintenance providers, ensuring high-quality, scalable supply and brand customization options.
