Product details:

Allows fast and clean filling of DEF (AD BLUE Diesel Exhaust Fluid), an Aqueous Urea Solution that must be handled very carefully due to its corrosive nature. Regular DEF filling is required by many diesel powered vehicles, including both cars & pickups, vans, etc Special connector fits all standard DEF systems & elbow adapter creates angled where required (Mercedes, VW) Shut-off valve prevents spillage Air-bleed line for fast flow. Built in screen prevents contaminants entering system Funnel body features wide-mouthed opening & built in handle. Allows easy, one-man, filling with large (10L) containers, saving time & money.