The BMW 840i xDrive Rocker Arm is one of the important parts of BMW 840i xDrive series cars, which is highly appreciated for its durability and efficiency. This vital component of the automobile effectively transmits motion from the pushrod into the intake/exhaust valves for proper functioning of the car's engine. Made from some heavy duty materials like stamped steel or aluminum, the Rocker Arm is to apply the needed force in the downwards direction for the valves to open and thereby improving the efficiency of the BMW 840i xDrive. It actually has a rather high rocker ratio of between 1.5:1 and 1.8:1 which in essence enhances the lift of the camshaft with some spectacular effects on the performance of the engine. Roller rockers coupled with needle bearings decrease the issue of friction hence reducing the wear and tear of the Rocker Arm. BMW 840i xDrive can be paired with different variations of the 8 Series both as a coupe and convertible; the engine is a turbocharged 3.0-liter inline-six. This combination again ensures the impressive horsepower and torque while the safety features like forward collision warning and auto-emergency braking are also improved. In the context of automotive industry, the BMW 840i xdrive rocker arm is unique because of its engineering and application on achieving better performance and near optimal efficiency which give it the basic value in the 840i xdrive series.
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