You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
Isn't the something that your service center can help you with? They can get you a replacement airbag and do the install for you along with any associated parts?
Also there is a Parts Catalog online that you can access with your My Tesla ID.