Guides & cross-reference notes

How these parts actually fail, and what replaces them.

Fitment guides, cross-reference charts and repair notes for Hayward, Pentair, Jandy, Sta-Rite and Zodiac equipment — written by the people who mould the parts, not by a copywriter.

Worn lid O-ring
Cause: Dry run
Result: Leak
Cracked lid
Cause: Over-tightening
Result: Cracks / leaks
Impeller wear
Cause: Cavitation
Result: Low flow

Latest · July 26, 2026

How the Hayward Super Pump shaft seal fails — and what actually replaces it

The SPX1600Z2 is the single most-replaced part on a Super Pump. Here is how to tell it has gone, which numbers supersede which, and what to check before you order a case.

Read the guide →