What This Part Is Used For The Hayward SPX5500A is a pump housing used on compatible Hayward pumps. It is the main wet end housing that forms the water chamber around the impeller and routes water through the pump. This part is located at the pump wet end on the equipment pad. Why This Part Matters A cracked housing can cause leaks that never stop, even after replacing seals and tightening fittings. Housing damage can also affect alignment and lead to repeat seal issues or air intrusion depending on where the crack is located. Replacing the correct housing restores a watertight wet end and stable circulation performance. It is a common repair after freeze damage or when fittings have been overtightened. Key Features and Specifications Manufacturer part number: SPX5500A Pump housing for compatible Hayward pumps Main wet end housing that routes water through the pump Replacement part for cracked, leaking, or damaged pump wet ends Used during pump rebuild and wet end repair service Installation and Fitment Guidance Disconnect power and relieve pressure before disassembling the pump wet end. Inspect mating surfaces and replace seals as needed so the rebuilt wet end holds tight under pressure. Confirm by manufacturer part number before ordering. About the Hayward Brand Hayward builds a full residential pool equipment ecosystem including pumps, filters, heaters, automation controls, cleaners, chlorination systems, and service parts. Their pumps are widely installed and supported with repairable wet end components that extend pump life. This compatibility helps service techs restore circulation and avoid full pump replacement when only the housing is damaged. Hayward replacement parts are widely supported across the pool industry. Common Service Context Techs typically replace pump housings when a pump leaks from the wet end body or when cracks are found around ports and mounting points. It is often identified during spring startup after freeze damage or when a leak persists after seal replacement.
