Intercooler Hose O-Ring (Upper) – A0219976645

Description

The OEM Intercooler Hose O-Ring (Upper) (Part Number: A0219976645) is a genuine Mercedes-Benz sealing component designed to ensure an airtight and leak-free connection between the upper intercooler hose and the charge-air piping. It plays a critical role in maintaining correct boost pressure and efficient engine performance.

Manufactured to Mercedes-Benz factory specifications using high-temperature and oil-resistant elastomer material, this O-ring provides precise fitment, excellent sealing capability, and long service life. A worn or damaged intercooler hose O-ring can lead to boost leaks, reduced engine power, poor fuel efficiency, and fault codes. Replacing it with an OEM upper intercooler hose O-ring restores proper charge-air sealing and engine performance.