The Fuel Cap Is An Important Part Of A Cars Emission Control System

The fuel cap on your car is something that you probably have never given much thought to. To most people it is little more than a plug that is taken off to fill the tank and then replaced until it is time to fill up again. All caps, both locking fuel caps, and non-locking versions are quite complex actually as they are required to meet specifications that a few years ago were never even thought of.

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