Anyone use these? I like the idea, but wonder how they hold up to water crossings. Maybe if you did a lot of water crossings a year you would probably want to replace yearly 

Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
Thanks, good to knowI had them on my 74 for a while. Both my rear axle seals blew after a while.
I can't conclusively say it was because of the bellows breathers, but I replaced them with tubing and filters and never had the problem again.
Exact same thing happened to a friend's 74 around the same time - blew both rear axle seals. He also replaced his with tubing and filters and no repeat of the problem.