Perfect fit on my older (2004), stationary RV. It’s a good idea to replace the regulator at the same time if yours is more than 10 years old: it tends to become defective after that (not just on mine).
Replacing the pigtail connections is a 10 minute job for a dual propane tank setup. Add another 20 minutes if you change the regulator. Several videos are available on YouTube to show you how, it’s not a complicated job.