The misfuelling prevention device

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The Diesel Head

The original “fit and forget” misfuel prevention device.

Once the Diesel Head is easily and securely fitted to your fuel tank inlet, you will never accidentally misfuel and pump petrol into your diesel tank.

The unique diameter of the diesel pump nozzle is the key to accessing your fuel tank because only a diesel pump nozzle can open the Diesel Head, protecting your fuel integrity.

Diesel Head, Non-Locking Version

Before you proceed to the store to make your purchase please have a quick look at Diesel Head Fits … for information on your vehicle.

£49.98 inc VAT  Free Shipping


Diesel Head Misfuelling Prevention Device Money Back Guarantee

The Diesel Head Misfuelling Prevention Device has been designed to be robust and easy to fit. Our money-back guarantee is equally robust and straightforward. Should you find that your Diesel Head Misfuelling Prevention Device is not entirely in line with your expectations, please contact us by email to or +44 (0)1527 757 576. Then, return the Diesel Head Misfuelling Prevention Device in good, unmarked condition complete with the accessories and original packaging, to us and we shall refund your payment. Simple, straightforward and satisfactory.