Pentair CNCRP/PosiClear RP/Sep Tank Union Diamond Seal Kit (178746Z)

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Correct water movement through a Challenger pump depends on the diffuser guiding flow around the impeller. This 0.75 HP diffuser helps restore hydraulic performance when the origin al part has become worn, warped, or damaged. Use it during pump rebuilds where flow, priming, or internal pump efficiency has been affected by diffuser wear.Choose this replacement when you want a clean, part-specific repair rather than forcing a workaround that can create leaks, fit issues, or recurring service calls. Always match the part number, equipment series, horsepower, plumbing size, color, or application details before installation. Designed for targeted pump repair instead of full equipment replacement Helps restore fit, support, sealing, or internal water control Useful for service technicians and hands-on pool owners Built for compatible Pentair Pool Products equipment applications Show more