

Mercedes CLK Serisi W209 M271 Termostat Oringi | FEBI 100078
Mercedes CLK Series W209 M271 Thermostat O-Ring | FEBI 100078
FEBI 100078 | Original Equipment (OEM) | 100% German Quality
This thermostat O-ring, designed for Mercedes CLK Series W209 vehicles with the M271 engine code, helps maintain engine temperature, enhancing vehicle performance. Proper functioning of the thermostat O-ring prevents engine overheating, thereby extending engine life. This part, recognized by the code FEBI 100078, serves as a critical component of the cooling system.
Product Features and Benefits
- OEM Compatibility: This thermostat O-ring is designed to meet Mercedes' original equipment standards, ensuring perfect fitment in your vehicle's cooling system.
- Material Quality: Manufactured using high-quality elastomer material, making it durable and long-lasting.
- Durability and Lifespan: Can withstand up to 100,000 km under normal usage conditions. Resistant to extreme temperatures and pressure.
- Performance: Ensures the engine operates at optimal temperature, thus improving fuel efficiency and reducing emissions.
- Testing and Certification: Manufactured in accordance with ISO 9001 and TS 16949 standards, ensuring high quality and reliability.
Technical Details
| Manufacturer Brand | FEBI |
| Product Code (OE/OEM) | 100078 |
| Part Type | Thermostat O-Ring |
| Production Standard | OE equivalent / OEM |
| Origin | Germany |
| System | Engine Cooling |
Vehicle Compatibility
This thermostat O-ring is compatible with Mercedes CLK Series vehicles with the W209 chassis code. Models with the M271 engine code were produced between 2002-2009. This O-ring is a critical component for ensuring the efficient operation of the vehicle's cooling system.
- Chassis code: W209
- Engine code: M271
- Production year range: 2002-2009
- Trim/Variant: CLK 200/230/280/320
For accurate part selection, it is recommended to confirm with our support line using your 17-digit VIN (chassis) number.
Quality and Warranty
FEBI has been recognized as a leading brand in the automotive spare part industry for years. Based in Germany, this company supplies original equipment to many automotive manufacturers worldwide. With ISO 9001 and TS 16949 certifications, FEBI offers high quality and reliability. Their products are also preferred for prestigious brands like Mercedes.
Installation and Usage Notes
The most important point to consider during the installation of the thermostat O-ring is to completely clean the old O-ring. During the installation of the new O-ring, attention should be paid to the appropriate torque value. Generally, it is recommended to change the coolant during the installation of such parts. Additionally, it is important to check for leaks in the system after installation.
Frequently Asked Questions
In which W209 models is this thermostat O-ring used?
This thermostat O-ring is used in the Mercedes CLK Series W209 models produced between 2002-2009 with engine codes CLK 200, 230, 280, and 320.
Is it original or aftermarket?
FEBI is one of the original equipment suppliers for Mercedes. Therefore, the FEBI 100078 thermostat O-ring is of original part quality and offers higher durability compared to aftermarket parts.
How many kilometers does this thermostat O-ring last / when should it be replaced?
The thermostat O-ring is expected to last up to 100,000 km under normal usage conditions. However, it is recommended to replace it immediately if there are signs of wear or leakage.
Can I install it myself, or do I need to take it to a mechanic?
The installation of the thermostat O-ring can be done by individuals with basic automotive knowledge. However, it is important to use the necessary tools during the repair and to be careful. If you are unsure, it is recommended to consult a professional.
How long will it take to arrive, do I have the right to return it?
Your order is shipped on the same day. You have a 14-day return right. The product must meet the return conditions. For detailed information, you can contact our support line.
Advantages of German Parts Warehouse: Same day shipping, 14-day return right, e-archive invoicing, WhatsApp expert support line (wa.me/905382927219). Our stock information is updated in real-time; your order is confirmed only for items physically available. If you write to our support line with your vehicle's chassis number, we will quickly provide you with the correct OE/equivalent part as a quote.
This product is equivalent to the following OEM/original part numbers. You can search by your vehicle's original part number.
- 0299973248 — Mercedes-Benz
- A0299973248 — Mercedes-Benz
Compatible vehicle information not yet added.
