Mercedes GL Series W166 M278 Valve Shaft Seal | ELRING 403.730

Mercedes GL Series W166 M278 Valve Shaft Seal

ELRING 403.730 | Original Equipment (OEM) | 100% German Quality

The Mercedes GL Series W166 is equipped with the M278 engine and was produced between 2012 and 2019. The valve shaft seal is located at the top of the engine and prevents oil from leaking out of the engine. This part is critical for the healthy operation of the engine. Over time, wear can lead to oil leaks and negatively affect engine performance. Therefore, the ELRING 403.730 valve shaft seal is essential for ensuring the engine's oil tightness and should be regularly checked to maintain engine performance.

Product Features and Benefits

• OEM Compatibility: ELRING is manufactured to high standards as an original equipment manufacturer. This part is approved by Mercedes authorized services and ensures perfect fit in the engine layout.
• Material Quality: Made from high-quality elastomer material, ensuring durability and longevity.
• Durability and Lifespan: This valve shaft seal can last up to 100,000 km under normal usage conditions. It is resistant to extreme temperatures and engine conditions.
• Performance: By ensuring the engine's oil tightness, it maintains oil pressure and enhances engine efficiency.
• Testing and Certification: ELRING meets high quality standards with ISO 9001 and TS 16949 certifications.

Technical Details

Vehicle Compatibility

This valve shaft seal is compatible with Mercedes GL Series W166 chassis code vehicles equipped with the M278 engine. These vehicles were produced between 2012 and 2019 and belong to the luxury SUV segment. Proper use of this part is important to enhance engine performance and efficiency.

• Chassis code: W166
• Engine code: M278
• Production year range: 2012-2019
• Trim/Variant: GL 450, GL 550

It is recommended to confirm with our contact line using your 17-digit VIN (chassis) number for the correct part selection.

Quality and Warranty

ELRING has been operating as an OE supplier in the automotive industry for many years. It manufactures original equipment for prestigious brands like Mercedes-Benz. With ISO 9001, TS 16949, and IATF 16949 certifications, it continuously raises quality standards. It offers high-quality spare parts with production facilities located in Germany.

Installation and Usage Notes

This valve shaft seal must be carefully positioned during installation. To prevent oil leakage, the old seal must be completely cleaned, and the new seal must be properly placed. Torque values should be considered during installation, and appropriate lubrication should be applied if necessary. Additionally, it is recommended to check this part in accordance with the general maintenance period of the engine.

Frequently Asked Questions