11217637071 BMW Bearingshell

These shells, also called bearing inserts, sit inside the engine block and around the crankshaft journals – basically where the crankshaft spins. They’re what the crankshaft actually rides on. They provide a smooth, low – friction surface for that rotation. The yellow color usually indicates the material composition – often a tri – metal or polymer – coated material designed for higher load capacity and better embeddability, meaning they can handle some debris without immediate damage. They aren’t solid metal all the way through. Think of them as the crucial interface between the spinning crankshaft and the stationary engine block. Without them, you’d have metal on metal contact, which would quickly destroy everything. They allow the crankshaft to turn freely, transferring power from the pistons to the wheels. They’re part of the lower engine assembly, so their job is to keep things running smoothly down there. Well, if these shells wear out or get damaged, you’ll definitely notice. You’ll typically hear a knocking sound – often described as rod knock – because the crankshaft starts to rattle around. It's a really serious issue, because that knocking damages the crankshaft itself and other internal parts. They act like a shield protecting expensive components. Ignoring it usually leads to complete engine failure. They're not something you want to put off addressing. We carry a good range of these at Fixparts Online if you’re looking to get this sorted. It’s a relatively common wear item, especially with higher mileage or if oil changes have been neglected. Replacing them is a core part of any engine rebuild or lower engine repair. Highly recommended: Bearing Shell Yellow (MPN 11217637071) comes with a 12-month warranty!

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