Think Diesel misfuel prevention alarm

It's far too easy to slip up at the petrol station and use the wrong fuel, which in turn can be a holiday ruiner (Don't worry, it happens to the best of us.) Never make this costly mistake again with the Think Diesel misfuel prevention alarm!

Designed to fit most diesel vehicles, this handy audible warning device will fit inside the filler flap, and offers a valuable reminder to use diesel instead of petrol.