Pentair Challenger 1.0 HP Diffuser (355077Z) magnacraft As a targeted replacement

As a targeted replacement

The 18 inch by 19-1/4 inch dimensions

The Darlly 70402 filter cartridge is designed for compatible filtration systems that use 40 square feet of media with a 1-1/2 inch MPT bottom connection

This replacement is especially useful in installations that already rely on pneumatic control and need the correct 3 inch FPT configuration instead of a slip-based or manual alternative

and a cleaner finished rebuild instead of a temporary patch

Pentair Challenger 1.0 HP Diffuser (355077Z) magnacraft As a targeted replacementFor a 1. 0 HP Challenger pump, the diffuser is part of the internal geometry that helps turn impeller movement into useful water flow. This Pentair replacement diffuser supports correct pump operation when the original part is worn, warped, or broken. It is a smart choice during performance troubleshooting, especially when low flow, vibration, or internal wear points to wet end component damage. Built for compatible 1. 0 HP Challenger pump assemblies