For Heavy Duty Vehicles only

The Air1 DEF Mobile Locator App - only for use by Heavy Duty Vehicle operators

Heavy Duty Vehicle DEF location finder - updated monthly by the Yara team

We only list Yara accredited DEF stations. These stations are not suitable for car drivers or small tank refills (visit for more information on Passenger cars). The DEF Mobile Locator is the official app of Air1®.

Travelling with Air1’s DEF Locator enables you to quickly locate your closest Air1 DEF filling station to fast fill your Heavy Duty vehicle:
* Search by city, state or post code
* Picks up your current location via GPS
* Calculate distance to Air1’s nearest filling station
* View filling station address details
* Easy access and fast fill pump stations for Heavy Duty vehicles (Please note that we only list Yara bulk retailers, we do not list generic DEF sellers)
* Route Planner shows you the way
* Updated monthly

Yara sites are not suitable for small vehicles e.g. Passenger cars and other small tank vehicles. These retail units have been serving bulk DEF to the Heavy Duty Vehicle operators and drivers since 2004 and deliver DEF in large quantities at a fast pace. Do not use this App for any other purpose than Heavy Duty Vehicle refills.

Diesel Exhaust Fluid (DEF), the operating fluid for SCR vehicles, is a non-toxic solution that transforms harmful Nitrogen Oxide (NOx) emissions from diesel-powered vehicles into harmless water vapor and nitrogen. DEF reduces NOx emissions in the exhaust gas system of your SCR equipped diesel vehicle, whether it be a truck, bus, automobile or an off road vehicle. Air1 complies with the highest industry standards in DEF. You can be sure your SCR vehicle will function flawlessly by using Air1's DEF. We reliably supply the highest quality DEF via a network of distributors across the USA and Canada, so you are never far away from an Air1 distributor or retail outlet.

Air1® is a registered trademark of Yara International ASA.

What’s New

Version 2.2.2

This app has been updated by Apple to use the latest Apple signing certificate.

DEF Support
What's New in Version 2.2.2
Bug fixes and improvements.

Ratings and Reviews

K-E-W ,

No results!

I don't see any locations on the map!

bkg24 ,

Owner Operator

Great App! Just what I needed to find DEF. Keep up the good work!

Poldo123 ,

Does it work?

Does this work? I don't see any stations.

App Privacy

The developer, Yara International, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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