This 14 inch diameter, 17 inch tall funnel is D-shaped to combat swirling, while a lip at the top helps to reduce spilling. A 45-degree bend in the funnel neck makes it easier to use in fillers mounted in a vertical panel. The funnel outlet is small enough to fit the "unleaded gasoline only" fillers on late-model production vehicles. The outlet points towards the flat side (the flat side will be closest to the filler panel).
We recommend adding a 115 Micron Funnel Filter Screen (Part No. 2575, sold separately) to your funnel to keep contaminants our of your fuel.