OPWMFPD DEF Mis-Filling Prevention Device for 21GU Nozzles

The media could not be loaded. Money well invested! That thing works perfect. I was able to purchase DEF at Highway DEF pump this morning where it’s over one dollar cheaper then in the city (in my area at least). And about twice cheaper than Home Depot. So in the long run I will save way more money than I spent buying this thing.

Since DEF is over 50% cheaper at the pump than in a box this thing will pay for itself in 4 boxes. Already added over 2.5 gallons. I also love that I can fill it up completely instead of adding in 2.5 gallon increments. No more partially full boxes waiting to be used.

This attachment is easy to keep in The truck and grab when needed to fill the DEF.

This is exactly what you need to fill a refillable DEF can. This will trick the bulk pump to actually open the nozzle so you aren't at the pump for 45 min filling a 5 gallon can.

For those that have figured out that DEF at the pump is way cheaper that buying it in a store, you need a magnet to get it to work properly if you're not driving an 18 wheeler. I tried other magnets and saying "they suck" is the family entertainment version of what I really think of them. This one works, is reliable, and is easy to store. Pro tip: keep it in a plastic bag so you don't get DEF inside of the truck.

Don't work, when diesel pump didn't work direct to the truck tank this device makes no difference, waste of money

Works great. Now more buying def in jugs. Just fill at the pump and go

Works great for being able to use any style def pump at truck stops with my Ram 3500