Pentair 170147 System:3 S8M150 Inner & Outer Cartridge Pack – 450 Sq Ft
Key Benefits +
How to Use +
Specifications +
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Full Product Description +
Complete S8M150 Replacement Media Set + 450 Sq Ft Filtration
- Genuine Pentair replacement cartridge pack for the Sta-Rite System:3 S8M150 modular media filter.
- Includes both the inner and outer replacement modules required for the S8M150.
- Provides 450 square feet of total filter area when the two modules are used together.
- Includes 191 sq. ft. inner module 25021-0202S and 259 sq. ft. outer module 25022-0203S.
- Exact Pentair part number 170147 helps avoid ordering the wrong System:3 cartridge set.
Quick Product Summary
The Pentair 170147 replacement cartridge pack is the complete inner-and-outer modular media set for the Sta-Rite System:3 S8M150 cartridge filter. Pentair identifies 170147 specifically as the S8M150 Inner & Outer Replacement Cartridge Pack, making it the correct complete media replacement when both filter modules in an S8M150 need to be replaced.
The set combines a 191 sq. ft. inner cartridge module, Pentair part 25021-0202S, with a 259 sq. ft. outer cartridge module, Pentair part 25022-0203S. Together they provide the S8M150 system’s full 450 sq. ft. filtration area. This is important because the System:3 design uses nested inner and outer media modules rather than a conventional single cartridge.
Best For
Owners and service professionals replacing both modular media cartridges in a Pentair / Sta-Rite System:3 S8M150 filter.
Why This Matters
- Part 170147 replaces both filtration modules at the same time, helping restore the complete 450 sq. ft. media set.
- Using the exact S8M150 cartridge pack avoids confusion with other System:3 models that use different cartridge sizes.
- The included inner and outer modules are the two specific Pentair media components listed for the S8M150.
- Replacing heavily worn, damaged, or difficult-to-clean media can help restore normal filtration performance when the filter itself is otherwise serviceable.
Common Signs / Use This When
- Your filter model is confirmed as Sta-Rite System:3 S8M150.
- Both the inner and outer cartridge modules are due for replacement.
- The existing media is damaged, deteriorated, or no longer cleaning effectively.
- You want the complete OEM-style replacement set rather than purchasing the inner and outer modules separately.
Product Specifications
| Specification | Details |
|---|---|
| Brand | Pentair |
| Product Line | Sta-Rite System:3 SM Series |
| Manufacturer Part Number | 170147 |
| UPC / Barcode | 788379886066 |
| Compatible Filter Model | S8M150 |
| Total Filter Area | 450 sq. ft. |
| Inner Module | 25021-0202S — 191 sq. ft. |
| Outer Module | 25022-0203S — 259 sq. ft. |
| Pack Contents | 1 inner cartridge module + 1 outer cartridge module |
| Application | Pool filtration replacement media |
Compatibility / Fitment Notes
Pentair 170147 is specifically listed for the Sta-Rite System:3 S8M150 modular media filter. Other System:3 models use different replacement packs: S7M120 uses 170145, S7M400 uses 170146, and S8M500 uses 170148. Verify the filter model on the equipment label before ordering rather than selecting by appearance alone.
Installation / Use Notes
Turn off the circulation pump and fully relieve all filter pressure before opening the filter tank. Follow Pentair’s current System:3 service instructions for removing the tank cover and existing media modules. Remove the old inner and outer cartridges, inspect the tank sealing surfaces and related service parts, then install the replacement modules in the correct positions. Reassemble the filter according to the manufacturer’s procedure and confirm there are no leaks before returning the system to normal operation.
Never attempt to open or service a pressurized pool filter. If the tank, clamp, pressure-relief components, or sealing surfaces show damage, have the filter inspected before startup.
Buy with Confidence
Benchmark Pool Supply helps customers match filter cartridges by exact filter model and manufacturer part number. For System:3 filters, confirming whether the filter is an S7M120, S7M400, S8M150, or S8M500 is especially important because each model uses a different inner-and-outer cartridge set.
Frequently Asked Questions
What does Pentair 170147 include?
It includes both replacement media modules for the System:3 S8M150: one 191 sq. ft. inner cartridge, part 25021-0202S, and one 259 sq. ft. outer cartridge, part 25022-0203S.
Is 170147 only the inner cartridge?
No. Pentair 170147 is the complete inner-and-outer replacement cartridge pack for the S8M150, totaling 450 sq. ft. of filter area.
Which filter does Pentair 170147 fit?
It is specifically listed for the Sta-Rite System:3 S8M150 modular media filter.
Will 170147 fit an S8M500 or S7M120?
No. Pentair lists different replacement packs for those models. Confirm the exact System:3 model number before ordering.
Should both cartridges be replaced together?
Part 170147 is sold as the complete inner-and-outer set. If both modules are worn or due for replacement, this pack replaces the full media set in one service.
