Hayward SX164DA Sand Filter Lateral Assembly With Center Pipe - For S164T

What This Part Is Used For
The Hayward SX164DA is a lateral assembly with center pipe used inside the Hayward S164T sand filter as listed. It forms the internal underdrain that collects filtered water while keeping sand media inside the tank. This assembly installs at the bottom of the filter and is accessed during internal service.

Why This Part Matters
Cracked laterals are a common cause of sand returning to the pool through the returns. When the underdrain fails, filtration efficiency drops and backwashing becomes less effective, which can keep the water hazy even with good chemistry. Replacing the correct assembly restores proper internal flow through the sand bed and keeps media where it belongs. This repair is typically done during a sand change when the filter is already opened.

Key Features and Specifications

• Manufacturer part number: SX164DA
• Sand filter lateral assembly with center pipe
• Specified for Hayward S164T sand filter
• Internal underdrain component that helps retain sand media
• Installs at the bottom of the filter tank

Installation and Fitment Guidance
Depressurize the filter completely and remove sand carefully to access the assembly. Verify the center pipe is seated properly and laterals are level before refilling media and reassembling the top. Confirm by manufacturer part number before ordering.

About the Hayward Brand
Hayward manufactures a complete lineup of pool equipment including pumps, filters, heaters, automation controls, cleaners, chlorination systems, and service parts. Their sand filters are widely used and supported with internal service components like laterals and center pipes to extend equipment life. This compatibility helps technicians restore performance without replacing complete equipment. Hayward replacement parts are widely supported across the pool industry.

Common Service Context
Techs typically replace this assembly when a pool starts returning sand or when internal parts are found cracked during a sand change. It is often identified by gritty debris at the returns after backwashing.