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What is an engine push rod in a car?

The definition of an engine push rod in a car is a small piece of metal which connects a the cam shaft to the engine valves. Note that in an overhead/dual overhead camshaft (DOHC) engine design, which is now quite common in modern cars, no push rod is necessary. In many engine designs the push rod actually wastes momentum by moving back and forth, which decreases engine efficiency. Replacing a push rod can range from cheap to expensive, depending on how rare the part is, and whether a generic alternative is available on the market.

Engine push rod partsEngine push rod parts

by Margaret Walker on Thu, 12/31/2009 - 10:02

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