Product Overview
The Pentair 25″ Lid Kit for System3® Filter – Upper Tank Shell Kit (24851-9001) is a genuine replacement lid assembly designed for 25-inch Pentair System3 pool filters. This durable upper tank shell kit restores proper sealing and structural support to the filter’s top section, ensuring efficient water flow and filtration performance. Engineered to meet original equipment specifications, this lid kit delivers reliable operation and a secure fit for routine maintenance or shell repair.
Ideal For
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Pool owners maintaining Pentair System3® filtration systems
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Replacement of damaged, worn, or cracked filter lids
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Service professionals performing filter maintenance or shell rebuilds
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Ensuring proper filter sealing and performance during backwash cycles
Key Features
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Genuine Pentair Replacement Part – Engineered to match original equipment fit and function
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25″ Upper Tank Shell Kit – Designed specifically for 25-inch System3® filters
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Durable Construction – Built to withstand routine pool filtration conditions
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Improved Seal Integrity – Helps prevent bypass and ensures effective filtration
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Easy Maintenance Upgrade – Simplifies filter lid replacement during scheduled service
Customer-Facing Q&A
Q: What is this lid kit used for?
A: This kit replaces the upper tank lid/shell on 25″ Pentair System3® pool filters to maintain proper seal and structural integrity.
Q: Will this fit my System3® filter?
A: Yes — it’s designed specifically for 25″ diameter Pentair System3® filter tanks. Confirm your filter size before ordering.
Q: Is this an original Pentair part?
A: Yes — this is a genuine replacement part manufactured to Pentair standards.
Q: Does replacing the lid improve performance?
A: Proper sealing and structural integrity from a new lid help ensure optimal filtration performance and reduce the risk of bypass issues.
Q: Should a professional install this?
A: Professional installation is recommended to ensure proper alignment, sealing, and safety.