BMW Thermostat O-Ring - Wahler 101216

Product Information

A thermostat gasket is a sealing gasket located between the thermostat housing and the engine block. Its primary role is to create a tight seal that prevents coolant from leaking out of the thermostat housing, ensuring that coolant circulates properly between the engine and the radiator. The gasket is usually made from rubber, silicone, or paper-like materials and is designed to withstand the heat and pressure of the engine's cooling system.

• Coolant Leaks: The most common symptom of a failing thermostat gasket is a coolant leak. If the gasket becomes worn, cracked, or damaged, coolant may start to leak from around the thermostat housing, leading to visible coolant puddles under the vehicle or around the engine.
• Engine Overheating: A faulty thermostat gasket can cause coolant loss, leading to reduced coolant levels and overheating of the engine. The engine temperature may rise above normal operating levels, and if the leak is severe enough, the vehicle may overheat, potentially causing serious engine damage.
• Erratic Temperature Readings: A leaking thermostat gasket may cause the engine’s temperature to fluctuate. In some cases, the coolant may escape too quickly for the system to regulate engine temperature efficiently, leading to sudden changes in the temperature gauge reading.

About Wahler

Wahler is the leading OEM manufacturer of thermal solutions for BMW, Mercedes-Benz, Audi, Porsche ,VW as well as Volvo, Saab, Jaguar, Land-Range Rover as well as various US domestic and Asian applications.

Since 1902, Wahler has built its reputation with technically complex thermostats and thermos-solutions for automotive and industrial applications. For a short time, Borg Warner managed Wahler products. In 2020, Borg Warner sold all of the thermostat production facilities back to Wahler. Today, Wahler is back as an independent brand supplying worldwide OEMs with thermostats, electronic thermostats, thermoswitches and electric valves.

With Wahler, the original and replacement parts are identical. This means that Wahler-made parts are the same quality as the original issue used by automakers. The Wahler brand stands for premium quality. Wahler aftermarket parts come with the same assurances with respect to service life and operational reliability.