Zodiac MX8 Elite and Original Models Top Cover w/Swivel Assembly. The top cover w/swivel assembly is a replacement part made and manufactured by Zodiac for all Barracuda MX8 cleaner models. It is easy and quick to install for all consumers. This piece attaches itself to the head of the cleaner and the swivel assembly allows you to easily remove the hose from the pool cleaner. This makes it “struggle-free” and simple to add more hose to fit the size of your pool and or replace any that may be damaged.