 The BMW valve cover is built to enclose and protect the delicate parts that make up the engine valve train. The valve train is made up of a number of vital engine parts, such as the rocker arms, lifters, valve springs and push rods. In engines that use an overhead cam system, there is a cam located under the BMW valve cover as well. These parts are quite delicate, and must operate with precision to keep the engine performance at its most efficient. The valve train system needs a constant flow of engine oil passing through the BMW valve cover to operate without producing friction, which can cause extreme wear on its moving parts.
 The BMW valve cover must keep this flow of engine oil contained to ensure that the supply remains sufficient to keep the valve train well lubricated. This can be made difficult by the position of the BMW valve cover, as it is mounted on the top of the engine, with a gasket to seal it at the bottom where it bolts to the engine. Engine oil circulates through the BMW valve cover under pressure in a constant circuit that pumps the oil up through the push rods to coat the rocker arms, and then drains the excess away through a number of small drain holes to the oil pan. If there is any opening in the seal of the BMW valve cover, gravity can easily draw the oil out to leak away, leaving the vital valve train parts unprotected and subject to friction damage or failure. We carry a selection of BMW valve cover replacements at great prices in our online catalog. Our secure site will make ordering your BMW valve cover fast and easy or our toll-free phone line can take your order just as conveniently.
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