Description
Pentair Challenger 355545Z Diffuser Assembly (3HP) Replacement
Intro
Upgrade your Pentair Challenger high-pressure inground pump with the 355545Z diffuser assembly. This durable black polymer diffuser is designed for 3HP Challenger systems and Waterfall AF-75/AFP-75 pumps, delivering smooth, efficient flow across the impeller. When paired with the matching impeller 355604, it restores performance and extends pump life.
List of Features
- Broad compatibility: Fits Pentair Challenger HP inground pumps and Waterfall AF-75/AFP-75, including older 2F and 2-1/2A units built before Oct 1992.
- Complete pairing: Designed to be used with impeller 355604 for proper seal and optimal clearance.
- Precise dimensions: 14-1/2" L x 15-1/2" H x 8" W ensure a direct factory-fit replacement.
- Flow-diffusing design: Internal vanes reduce turbulence, boosting efficiency and lowering noise.
- Durable construction: Black polymer housing resists chemical exposure and outdoor elements for long service life.
- Easy installation: Quick swap with common tools; minimizes downtime.
Final Thoughts
From Duckies Pool Supply, this diffuser assembly provides dependable performance, easier maintenance, and restored pump efficiency. Used with the compatible 355604 impeller, it revives flow, pressure, and overall pool-system reliability. Ready for a hassle-free replacement? Add to cart and get your Challenger pump running like new today.












