Pentair Algae Brush 18 in. Aluminum Back, Stainless Steel for Plaster, Concrete, Gunite | R111646 22 Internals The axle block kit (front

The axle block kit (front and rear) are replacement parts made by Polaris

Capacitor Housing Cover for PB4SQ

Cartridge replacement

This frame is grey and has one opening in which the vac tube (vac tube posts) rests which is the unit that gives the cleaner the power to suck and pull up dirt

but it also can help improve overall cleaning compared to many of the original models

Pentair Algae Brush 18 in. Aluminum Back, Stainless Steel for Plaster, Concrete, Gunite | R111646 22 Internals The axle block kit (frontPentair Algae Brush 18 in. Aluminum Back, Stainless Steel for Plaster, Concrete, Gunite R111646 Algae brush with stainless steel bristles Perfect for removing tough algae on plaster surfaces Snap adapt handle fits most poles Includes 1 brush per pack Measures 29 50 inch length by 1 33 50 inch height by 1 33 50 inch width