Part of your car's security system, the fuel cap lock enables you to lock the fuel cap on your vehicle.
The fuel cap is a small cap that covers the hole where you put the fuel into a vehicle. The fuel cap protects and covers the top of the pipe that connects to the fuel tank. The fuel cap lock provides peace of mind when leaving your car parked unattended, restricting access to the fuel cap.
Usually made of plastic, fuel caps usually just clip or press into place over the opening. The fuel cap can be located on either side of the vehicle, towards the back, often on the quarter panel or rear wing. The fuel cap lock ensures that the fuel cap cannot be removed without the use of the designated key, helping to secure the fuel tank and therefore the fuel inside it. The fuel cap serves to prevent dirt, dust and other unwanted debris from entering the fuel pipe and potentially clogging up and damaging the fuel filters. It also functions to stop fuel from spilling, leaking and evaporating out of the vehicle. The fuel cap also prevents others from accessing your fuel supply and siphoning the fuel. Having a lock on your fuel cap ensures the fuel cap stays locked tight, enabling the fuel cap to do its job properly.
Usual reasons for replacing this part is damage, caused by rust, for example, or loss of the key which opens the lock on the fuel cap. Purchasing a fuel cap lock will ensure the part fits perfectly with the fuel cap and the make and model of your vehicle.