

Mercedes W126 M116 Thermostat O-Ring | FEBI 10258 Spare Part
Mercedes W126 Chassis M116 Thermostat O-Ring
FEBI 10258 | Original Equipment (OEM) | 100% German Quality
Vehicles with the Mercedes W126 chassis code are equipped with M116 engines, and these models were produced between 1979 and 1992. The function of the thermostat o-ring is to ensure the sealing of the engine cooling system and to help maintain the engine at its optimum operating temperature. This part enhances the vehicle's performance by preventing the engine from overheating and extending the engine's lifespan. The thermostat o-ring with the code FEBI 10258 is an essential component of the engine's cooling system and should be preferred as a high-quality product.
Product Features and Benefits
- OEM Compatibility: FEBI 10258 is manufactured according to original equipment standards, ensuring no compatibility issues during installation.
- Material Quality: Made from high-quality elastomer material, it is resistant to heat and chemicals.
- Durability and Lifespan: Offers long-lasting use, showing durability up to 100,000 km and is resistant to extreme temperatures.
- Performance: Helps improve fuel efficiency by increasing the efficiency of the engine's cooling system.
- Testing and Certification: Manufactured in compliance with ISO 9001 and TS 16949 standards, it has undergone quality control processes.
Technical Details
| Manufacturer Brand | FEBI |
| Product Code (OE/OEM) | 10258 |
| Part Type | Thermostat O-Ring |
| Production Standard | OE equivalent / OEM |
| Origin | Germany |
| System | Engine Cooling System |
Vehicle Compatibility
The thermostat o-ring with the code FEBI 10258 is compatible with vehicles having the Mercedes W126 chassis code. This part can be used in all models with the M116 engine code. The W126 series was produced between 1979 and 1992 and is designed to ensure the reliability of the engine cooling system during this period.
- Chassis code: W126
- Engine code: M116
- Production year range: 1979-1992
- Trim/Variant: All Variants
It is recommended to confirm with our contact line using your 17-digit VIN (chassis) number for the correct part selection.
Quality and Warranty
FEBI is a globally recognized brand in the automotive spare parts industry. Based in Germany, this company produces high-quality original equipment parts. FEBI's products are manufactured in compliance with international standards such as ISO 9001, TS 16949, and IATF 16949. Supplying OE parts to leading automotive manufacturers like Mercedes-Benz, FEBI stands out for its reliability in the industry.
Installation and Usage Notes
The most important point to consider during the installation of the thermostat o-ring is to completely remove the old o-ring and clean the mounting surface. Care should be taken to properly place the o-ring during installation. Generally, it is recommended to replace o-rings every 100,000 km. Additionally, it is important to regularly check the engine coolant and replace it when necessary. Since this part is directly related to the engine's cooling system, it enhances performance by preventing the vehicle from overheating.
Frequently Asked Questions
In which W126 models is this thermostat o-ring used?
The thermostat o-ring with the code FEBI 10258 is used in all M116 engine models with the Mercedes W126 chassis code. These models were produced between 1979 and 1992.
Is it original or aftermarket?
FEBI is recognized as an original equipment manufacturer. Therefore, the FEBI 10258 thermostat o-ring is a high-quality and reliable product. It is more durable and long-lasting compared to aftermarket products.
How many kilometers does this thermostat o-ring last / when should it be replaced?
The FEBI 10258 thermostat o-ring shows durability for an average of 100,000 km. The replacement time comes when the engine shows signs of overheating.
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 with basic tools. However, since it is related to the engine cooling system, it is recommended to have it done by a qualified technician to avoid possible errors.
How long does it take to arrive, do I have the right to return it?
Your orders are shipped the same day. You have a 14-day return right. Additionally, sales are made with e-archive invoices.
Advantages of German Parts Depot: Same day shipping, 14-day return policy, e-archive invoiced sales, 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 contact 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.
- 0019973345 — Mercedes-Benz
- 00A121119 — TecDoc (VW)
- 0159972348 — Mercedes-Benz
- 0A121119 — TecDoc (VW)
- A0019973345 — Mercedes-Benz
- A0159972348 — Mercedes-Benz
- N90560801 — TecDoc (VW)
Compatible vehicle information not yet added.
