BMW Alpina B7 xDrive's Valve Stem Oil Seal would prevent engine oil from leaking into the combustion chambers in order to protect compression and maintain throttle response. The Valve Stem Oil Seal meters a thin, even coat on each valve guide, letting every Alpina B7 xDrive breathe clean while excess lubricant stays out of the cylinders. The BMW Valve Stem Oil Seal is manufactured from heat resistant elastomer for flexibility through punishing boost runs. Since it doesn't crack or shrink, it is guaranteed to deliver a proper seal. The Valve Stem Oil Seal stops stray oil, emissions stay low, and catalytic parts don't get fouled. Throughout the course of its life, a Valve Stem Oil Seal remains tight, meaning owners see smoother starts and less exhaust smoke with increasing valvetrain clearance. The Valve Stem Oil Seal is all you need when refreshing the top end, as fitment remains consistent across all Alpina B7 xDrive model years. The xDrive controllers depend on the reliable sealing of data because regularly consistent cylinder pressure allows for better torque split, which further boosts the poised nature of the Alpina B7 xDrive. Low-friction lips in the component trim drag on the stem recover a little fuel economy for long BMW highway legs. With a firm control of oil, safety is also enhanced. This decreases the chances of detonating a piston in a high output BMW. The Valve Stem Oil Seal limits carbon hot spots on exhaust valves, preventing damage to parts of the Alpina B7 xDrive as it races rapidly to triple digit speeds. Through rigorous factory testing, this part from BMW has proven to be more resistant to tearing and chemical attack than generic seals. Essentially, the Valve Stem Oil Seal allows all Alpina B7 xDrive to deliver full power, refined manners, longer service intervals, and the confidence that comes with a premium BMW.
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