06B109417C Volkswagen roller roc

These guys basically take the spinning motion of your camshaft and turn it into the up and down motion that opens and closes your engine's valves. They’re a crucial link in that whole process. The “roller” part is important too; it’s a little wheel that reduces friction where the rocker arm contacts the valve stem. Standard rocker arms just slide, and that creates wear. They’re inside the engine, obviously, up top where the valves are. They work with the pushrods and the camshaft to control when air and fuel get into the cylinders and when the exhaust gets out. It's all about timing, and they’re a key component in keeping everything timed correctly. You won't see them directly, but the engine absolutely won't run without them. They're important because they contribute to how efficiently your engine runs and how much power it makes. The roller design, like I said, minimizes friction, which means less energy is wasted just overcoming that friction. That translates into a little more horsepower and better fuel economy. They also last a lot longer than standard rocker arms, reducing wear on other engine components. You'll notice if you have a problem with one – usually a ticking sound, or a loss of power. They can handle higher engine speeds too, which is why people upgrading for performance often swap these out. You can find a good selection of them over at Fixparts Online if you’re looking to get started. They’re a pretty straightforward part to replace, but definitely something you want to get right for engine health. Smart choice: Roller Rocker Arm (MPN 06B109417C) is backed by a 12-month warranty!

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