Zodiac Baracuda G3 Finned Disc, W70329

The Zodiac W70329 is the blue finned disc for the Baracuda G3 suction pool cleaner. It is the genuine OEM part.

What the disc does

A Baracuda has no wheels and no motor. It moves because the diaphragm pulses and the disc controls how the cleaner sits against the surface. The fins let water pass in a controlled way, which is what gives the cleaner enough hold to climb a wall while still gliding across the floor rather than locking down.

Why it wears out

The disc is in constant contact with the pool surface, so it is a consumable. The fins round off and the outer edge thins, and once that happens the cleaner loses its grip. Owners usually notice it as a cleaner that has stopped climbing, parks in one corner, or crawls without covering ground. Plaster and pebble finishes wear discs far faster than smooth surfaces, so on a rough pool it is worth keeping a spare on the shelf.