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. Proven track record: Main Bearing Set VW EA827 4 Cylinder (MPN 77537600) is backed by 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 last, using high-quality materials and careful manufacturing. You’ll get reliable performance for the long haul. • We cover a wide range of vehicles – from everyday cars to heavy-duty trucks. Finding the right part for your job is easy. • Kolbenschmidt has been a trusted name in the automotive industry for over 100 years. We have a history of innovation and excellence. • Our parts are tested to meet or exceed original equipment standards, so you can be confident in their quality and fit. Drive with confidence – choose Kolbenschmidt parts at FixParts Online.