Hayward SPX1600Z4 Housing Cap Screw

What This Part Is Used For
The Hayward SPX1600Z4 is a housing cap screw used to secure the pump housing components together. It holds the wet end assembly tightly against the seal plate and motor. This fastener is critical to maintaining a sealed pump body.

Why This Part Matters
Missing or damaged cap screws can cause housing separation and water leaks. Uneven clamping pressure may also lead to gasket failure. Replacing worn fasteners helps maintain proper sealing and pump integrity.

Key Features and Specifications

• Manufacturer part number SPX1600Z4
• Pump housing cap screw
• Used on compatible Hayward pump models
• Secures wet end assembly
• Structural fastener component

Installation and Fitment Guidance
Tighten screws in an even pattern to ensure proper gasket compression. Inspect threads and replace damaged hardware as needed. Confirm by manufacturer part number before ordering.

About the Hayward Brand
Hayward builds a full line of pool pumps, filters, heaters, automation, cleaners, and chlorination systems. Their pump assemblies are engineered for serviceability and component replacement. Proper hardware installation protects against leaks and misalignment. Genuine Hayward screws ensure proper fit with compatible housings.

Common Service Context
Housing screws are often replaced during wet end rebuilds or after corrosion from outdoor exposure. Techs commonly inspect these when tracking down small housing leaks.