Polaris PB4-50 Booster Pump Replacement Volute - Part WR0520500

Polaris PB4-50 Booster Pump Replacement Volute (Part WR0520500)

This is the genuine Polaris replacement volute for the new style PB4-50 booster pump. Volutes commonly develop pin hole leaks over time and require replacement to restore full pump performance. A straightforward DIY fix to get your Polaris pressure-side pool cleaner running like new.

Please note: Drain plug is not included — retain the drain plug from your old volute when replacing. A replacement o-ring for the bracket adaptor is available separately.

Key Details

• Genuine Polaris part — Part Number WR0520500
• Suits new style PB4-50 Polaris booster pumps
• Commonly required due to pin hole leaks in the volute
• Drain plug not included — reuse from existing volute
• Item #1 in the PB4-50 exploded parts diagram

Also Available

• Replacement O-Ring for Bracket Adaptor — available separately