Basically, it creates a seal. It's a simple loop of rubber, designed to sit in a groove and stop fluids – usually oil or transmission fluid – from leaking out. They’re used everywhere in your vehicle where something needs to be sealed up tight, but specifically here, it's about sealing things within the transfer case. Think of your transfer case as the part that splits power between your front and rear wheels, especially important for four – wheel drive. The O – ring seals various components inside the transfer case, preventing leaks around shafts, housings, and covers. It’s part of a larger system that keeps everything lubricated and working smoothly. You'll notice if one fails – usually as a drip, or potentially a bigger leak, under the vehicle. It's often located where two metal parts come together. If this leaks, you lose fluid. Losing fluid means less lubrication. Less lubrication equals increased wear and tear on all those gears inside the transfer case, which can lead to pretty expensive repairs down the road. Plus, a leak can cause damage to other components, and potentially even affect how your vehicle drives. They’re cheap to replace, but the damage a failed one can cause certainly isn’t. You can find a good selection of these, and a lot of other drivetrain parts, over at Fixparts Online if you're looking. It’s definitely one of those little parts that acts like a shield, protecting much bigger, more expensive parts. Perfect fit for your vehicle: O-Ring (MPN 24311218570) comes with a 12-month warranty!

About BMW

The iconic three-pointed star represents Mercedes-Benz's vision of motorization on land, sea, and air.

Why Choose BMW?

• Get parts made specifically for your BMW, ensuring a perfect fit and optimal performance. • BMW parts are engineered to last, meaning fewer repairs and more time on the road. • Using genuine BMW parts helps maintain your vehicle’s value. • You’ll get the same quality and reliability that BMW is known for, giving you peace of mind. BMW – trusted quality, available at FixParts Online!