1C0121087A Audi TPIECE

This hose essentially connects the radiator to the engine, specifically handling the coolant flow after it’s left the radiator and is heading back to the engine to be cooled again. That ‘T’ shape isn’t just for looks – it splits the coolant flow, often directing some to the heater core and the rest back into the engine itself. It’s a pretty simple part, but crucial for the cooling system to work as intended. Think of your engine like a really hard worker who gets really hot. The coolant is like the worker’s personal air conditioning system. This upper hose is a main highway for that coolant to travel. It takes the cooled fluid from the radiator and sends it back to the engine to absorb more heat. It's part of a closed loop, constantly circulating to keep everything at the right temperature. If this hose fails, you'll have coolant leaking, which is bad news – it can cause overheating really quickly and potentially serious engine damage. You’ll notice if it’s leaking, usually as a puddle under the front of your car or steam coming from the engine bay. But even before it bursts, the rubber degrades over time, getting soft and potentially collapsing inside, which restricts coolant flow and causes overheating issues. It acts like a shield, protecting the engine from heat, but it needs to be in good shape to do its job. You can find a replacement for a good price at places like Fixparts Online, and it's a relatively straightforward repair that can save you a lot of trouble down the road. Proven reliability: Radiator Upper Coolant T-Connector Hose (MPN 1C0121087A) is backed by a 12-month warranty!

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