Zodiac MX8-MX6 Wheel Pin Description The Zodiac Wheel Pin is a crucial replacement part specifically designed for the Zodiac MX8 and MX6 model pool cleaners. This part comes in a distinct blue color, matching the aesthetic of your Zodiac pool cleaner. Features Design: The pin is round with a stem-like tail, engineered for a secure fit. Function: It plays a key role in locking both wheel bearings and the central wheel in place, crucial for the cleaner’s mobility. Compatibility: Specifically designed for Zodiac MX8 and MX6 models. .