These are simple little rubber rings, but they create a watertight seal. Specifically for the grille, they seal where the grille assembly meets the body of the car. It’s really about keeping moisture – water, snow, road spray – from getting behind the grille and potentially causing rust or damage to anything electrical back there. Think of it as a little gasket. It sits between the grille and the car’s bodywork. It doesn't do anything structural, it's purely about preventing water intrusion. They're usually found around mounting points or where sections of the grille join together. They’re often overlooked, but they do a vital job. It's easy to dismiss something so small, but water getting where it shouldn't is a big deal. Rust is the obvious concern, and of course, if there are any sensors or wiring harnesses back there, water can cause all sorts of electrical headaches. You’ll notice if you have a leak – usually as water inside the engine bay or maybe even inside the car if it's a bad enough leak. They deteriorate over time, get brittle, and lose their ability to seal effectively. We carry a bunch of these at Fixparts Online, and it's one of those parts that’s cheap enough to replace proactively to avoid bigger problems down the road. It acts like a shield, protecting more expensive components. BMW quality assured: O-Ring (MPN 07119906350) includes a 12-month warranty!

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