These bearings are essentially the support system for the crankshaft inside the engine. The crankshaft is what turns and ultimately powers the car, and these bearings sit between the crankshaft and the engine block. They allow the crankshaft to spin smoothly with as little friction as possible. Each bearing is a split shell, meaning it comes in two halves that clamp around the crankshaft journal. They’re typically made of a layered metal – a strong steel backing with a softer alloy on the surface that actually does the work. As I said, these let the crankshaft spin. Without them, the crankshaft would be directly rubbing against metal, which would quickly destroy everything. They handle a lot of stress, especially during acceleration and when the engine is under load. They’re a critical part of the bottom end of the engine, so they’re directly responsible for transferring power from the pistons to the transmission and eventually to the wheels. Honestly, these are one of those parts you really don’t want to fail. If a main bearing starts to wear out, it creates extra clearance and the crankshaft will start to knock. You'll notice if that happens – a deep, rhythmic knocking sound coming from the bottom of the engine. That sound means things are grinding and you’re risking major engine damage. Replacing them prevents that. Over time, oil pressure and constant movement cause wear. If you're rebuilding an engine, these always get replaced. Even if you’re just doing some top – end work, it's a good idea to check these and replace them if they show any sign of wear. You can find a good set, like this one, over at Fixparts Online, or of course anywhere else that carries engine parts. It's a relatively small investment to protect a very expensive engine. Satisfaction guaranteed: Main Bearing Set VW EA827 4 Cylinder (MPN 77551610) comes with a 12-month warranty!

About Kolbenschmidt

Kolbenschmidt specializes in high-quality engine components, including pistons, cylinders, and bearings, for optimal engine performance.

Why Choose Kolbenschmidt?

• Kolbenschmidt parts are made to the same high standards as the original equipment in your vehicle, so you get reliable performance. • We have a huge range of parts available, covering many different makes and models – from older cars to the latest vehicles. • Our parts are tested rigorously to make sure they can handle tough conditions and last a long time. • Kolbenschmidt has been a trusted name in the auto parts industry for over 100 years – we know what it takes to keep your engine running smoothly. Kolbenschmidt delivers excellence, FixParts Online delivers to your door.