Replacement – Aqua UV – EZ Twist Cap Assembly w/O-Ring – Black Review AuntWrecker April 21, 2018 August 4, 2018 No Comments on Replacement – Aqua UV – EZ Twist Cap Assembly w/O-Ring – Black Review This fits your . Make sure this fits by entering your model number. Aqua Ultraviolet EZ Twist cap top assembly, black. › See more product details EZ Twist cap top assembly, black.