The Diesel Key replaces the existing filler cap and, once fitted, prevents you from accidently putting the wrong fuel into a diesel filler neck.

This device is a physical barrier that only the diesel pump will fit into. The Diesel Key is the only misfuelling device on the market today that offers protection from fuel theft.

All vehicles listed have had the Diesel Key installed by our engineers to ensure the exact fitment.

Price £36.95