Hayward SPX5500D Strainer Cover With Lock Ring

What This Part Is Used For
The Hayward SPX5500D is a strainer cover with lock ring used on compatible Hayward pumps. It closes the pump strainer basket so the pump can hold suction and maintain prime while circulating water. This assembly installs on top of the pump strainer housing at the equipment pad.

Why This Part Matters
A cracked lid or worn locking ring can let air into the pump, causing prime loss, low flow, and noisy operation. Suction side air leaks also reduce filtration performance and can trigger flow related issues on heaters, cleaners, and chlorination systems. Replacing the correct cover and lock ring restores a tight, stable seal without overtightening. It is a common fix when lids warp from heat, age, or repeated removals for basket cleaning.

Key Features and Specifications

• Manufacturer part number: SPX5500D
• Strainer cover assembly with lock ring for compatible Hayward pumps
• Closes the pump strainer basket and supports suction sealing
• Installs on the pump strainer housing at the equipment pad
• Replacement part for cracked lids or damaged locking rings

Installation and Fitment Guidance
Shut off power to the pump before opening the strainer cover. Inspect the sealing surface and replace the correct O-ring if needed so the cover seats evenly. Confirm by manufacturer part number before ordering.

About the Hayward Brand
Hayward manufactures a full residential pool equipment ecosystem including pumps, filters, heaters, automation, cleaners, chlorination systems, and service parts. Their pumps are commonly paired with Hayward filters and heaters, so reliable suction sealing is critical for the whole system. Serviceable pump components help keep circulation stable and reduce downtime. Hayward replacement parts are widely supported across the pool industry.

Common Service Context
Techs typically replace strainer covers when a pump won’t hold prime, the lid shows air bubbles, or the locking ring won’t tighten evenly. It is often identified during basket cleanings when the cover is removed and the lid is found cracked or warped.