By Pentair Pool Products



Part # R173576

Dimensions 7" x 26"

Alternate Part #'s 178584, 17-102-2125, PENR173576

Product Description

Pool Filter Replacement Cartridges

Pentair Pool Filter Cartridges - Purchase a Replacement Cartridge for you Swimming Pool Filter or purchase a spare Cartridge.

Click here for more Pentair Pool Filter Cartridge

Product Specifications

Filter Model:
Pentair Clean & Clear Plus 420 After 11/98
Filtration Area:
105 sq. ft.
26 - 1/16 in.
7 in.
Top Inside Diameter:
Bottom Inside Diameter:

?     Asked on 7/2/2018by Inyo Visitor

anything cheaper than $101 each

A  Answered on 7/2/2018 by InyoPools Product Specialist Lennox H.

Hi. You can use the Pureline Clean & Clear Plus 105 Replacement Cartridge - PL0120 as an alternate replacement. 

?     Asked on 6/19/2014by Guest

Is this an actual Pentair replacement cartridge or a generic?

A  Answered on 6/19/2014 by InyoPools Product Specialist Patrick P.

This is the Pentair original cartridge.

?     Asked on 7/29/2007by Guest

Can you please give me the dimensions of this filter.

A  Answered on 7/29/2007 by InyoPools Product Specialist Patrick P.

The dimensions of this cartridge are as follows: Outside Diameter = 7"; Length = 26 1/16"; Inside Diameter = 3"

?     Asked on 7/29/2007by Guest

Is this price per cartridge or for 4 cartridges

A  Answered on 7/29/2007 by InyoPools Product Specialist Patrick P.

This is the price for 1 cartridge, this is the original OEM cartridge, however we do carry the generic which we feel is every bit as good as the OEM. The price on the generic cartridge is considerably less and can be viewed or purchased through this link http://www.inyopools.com/Products/06400001004171.htm Thanks! 


Est. Repair Time

Less than 1 hr

Tools Needed

Socket Set, Adjustable Wrench

1     0

Just needed to change cartridge for the first time.

Written on 11/8/2020 by Guest

Turn off breaker. Twist the gauge up top to relieved the pressure. Waited for decompression.Took the special sized wrench unscrewed the nut that relieved the tension from the tank. Once totally unscrewed pulled clamp off the seam of the tank. Slowly lifted up top and put it to the side. Removed old filters rinsed out sand from the bottom of the tank after unscrewing drainage nut underneath tank. Replaced drainage nut and replaced old filters. Reassemble tank with clamp. Screwed nut onto screw that tightens belt. Turned on the breaker. Waited until pressure build up at the gauge which is revealed when water comes out of the opening of the gauge valve. Turned the gauge to keep pressure in.

Were these instructions helpful? 


Review Summary

 (Average 5  out of 5 stars)
2 Rating
5 star:
4 star:
3 star:
2 star:
1 star:

The Most Helpful Review

The Most Recent Reviews