Basically, it’s a coiled metal spring that stores mechanical energy when you push on it. It pushes back with an equal force. That’s the simple version. They're designed to absorb vibration and provide tension. Some will return something to a neutral position, like a lever or valve. In an exhaust system, you'll usually find these holding heat shields or exhaust components together. Sometimes they're part of the flex pipe, allowing some movement while still keeping everything connected. They can also be used in exhaust clamps to keep pressure tight. They’re small parts, but they're everywhere. You’ll notice if one is missing or broken because things will rattle or won't stay firmly in place. These might be little guys, but they prevent a lot of headaches. They keep components from banging against each other, which creates noise and eventually bigger problems. Think of it like a shield between metal parts. If the spring fails, you’re looking at potential exhaust leaks, increased vibration, and maybe even damage to other parts. They're inexpensive to replace, and doing it proactively can save you a lot of money down the road. You can find a good selection of these on sites like Fixparts Online, and honestly, it's better to have a few spares on hand for exhaust work anyway. Customer support you can rely on: Compression Spring (MPN 18112242656) has a 12-month warranty!

About BMW

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• Get parts made specifically for your BMW, so they fit and work perfectly. • BMW parts are known for their high quality and durability, meaning they last longer. • Using genuine BMW parts helps maintain your vehicle’s value. • You can trust BMW parts to keep your car running smoothly and safely. Performance you can rely on – BMW parts from FixParts Online.