Specially designed screw directly on to the AdBlue® tank filler neck where the vehicle is fitted with an angled filler neck (on the outside of the vehicle alongside the fuel filler neck or in the boot inner wing, etc.) The funnel has a manually operated anti-spill valve which is operated by lifting the valve inside the funnel. * For safe transfer of AdBlue® from storage containers to the vehicle tank. Equipped with manually operated anti-spill valve. * 1100ml transparent funnel with scale. * Equipped with a lid to keep out dirt and debris when not in use. * Air breather pipe to allow air out of the tank and prevent splashing caused by bubbling. * For Straight AdBlue® filler necks, please check 3985-WW.