31607544433 BMW Rubber boot

This little rubber sleeve basically protects your CV joint. The CV joint itself is what allows your wheels to turn and move up and down with the suspension, and it’s packed with grease. The boot keeps that grease in and dirt and water out. It’s pretty simple, really. It flexes and stretches as the suspension works, so it needs to be durable but also very flexible. It sits right where the driveshaft connects to the wheel. Think of it like a seal around that connection. It’s part of your drivetrain – everything that makes the wheels turn. Without it, the joint is exposed to the elements, and that causes problems fast. You'll find them on both ends of every CV joint, protecting both the inner and outer connections. If this boot cracks or tears, grease will fling out and dirt and water will get in. That dirt grinds away at the joint, causing wear and tear. Eventually, the joint will fail – meaning a costly repair. You’ll notice if one goes bad because you’ll likely hear clicking sounds when you turn, or you might even fail inspection. Replacing the boot is a lot cheaper than replacing the whole CV axle. We carry a good selection of these at Fixparts Online, and they're a pretty straightforward DIY job if you’re comfortable working on cars. If not, any good mechanic can swap it out for you quickly. Stand out from the crowd: Rubber Boot (MPN 31607544433) has a 12-month warranty!

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