Part # 4654-85
Manufacturer Code 178578
Pentair® Clean & Clear Plus® Bottom Tank Assembly – 178578
✅ Genuine Pentair® OEM Replacement
⚠️ For Filters Manufactured After November 1998
➡️ Compatible with Clean & Clear Plus® 240, 320, 420, and 520 Models
Restore structural integrity and performance to your cartridge filter with the Pentair 178578 Bottom Tank Assembly. This high-quality OEM component is designed for use with Clean & Clear Plus® filters manufactured after November 1998.
Key Features:
✅ Precision-molded Pentair® OEM tank base
✅ UV- and chemical-resistant thermoplastic construction
✅ Designed to fit securely with matching top lid and clamp band
✅ Reinforced design ensures long-lasting durability and stability
✅ Integrated drain port for easy maintenance
Compatible With:
• Clean & Clear Plus® 240
• Clean & Clear Plus® 320
• Clean & Clear Plus® 420
• Clean & Clear Plus® 520
(Models manufactured after Nov. 1998)
Pentair Part Number: 178578
• Color: Almond
• Includes: Bottom tank only (lid, o-ring, and clamp sold separately)
Installation Tip:
Be sure to check your filter’s manufacturing date. This base is not compatible with filters produced before November 1998 due to size and connection differences.
Is the pentair filter bottom part #17857, catalog#4654-85 for the pentair d. e. quad 80 filter?
Reply
Yes that is correct. Please be advised that sometimes due to expanding and contracting the lids may not match up with a new base.
Reply
wil this fit replacement part number 17-8585
Reply
Hi J, The Tank Bottom Assy., (after 11/98) (178578) would be the correct bottom that can be use with the Clean & Clear Plus 520 (After 11/98) Cartridges p/n R178585.
Reply
I have a Pentair Pool Products Clean Clear Plus Tank and I need a new bottom tank for my pool fifter. I'm Med # CCP320 ? # Repl # 17-8580 Help Help - Thank you..
Reply
Hi Jon, This tank bottom assembly is the correct replacement for the CCP320 if it was manufactured after 11/98.
Reply
Hi Arron, I think you may be missing a digit in your part #, can you double check your part #?
Hi my name is Jon D. The Part/Mod # CCP320 on the lable, and Rep# 178580
Reply
Hi Jon, The manufacturer's part number is 178578 which is the replacement bottom assembly for the CCP320 filter manufactured after 11/98.
Reply
Less than 1 hr
Screwdriver, Mallet, lubricant
After loosening and removing the tanks center belt strap I used a screwdriver to aid in carefully separating the top and bottom half of the tanks
Idisassembled the split tank removing the filters and stand. I left the tanks top half off while I:
I reattached the new bottom half to the in and output lines (I used Teflon tape to ensure a good seal)
I felt the new interior filter stand wasn't as snug so I used the rinsed old one and installed 4 new filters
I placed the the cross filter (top of stand) slightly over each filter using pull through lubricant and then a rubber mallet to tap the top into each filters center hole being careful not to push or hit them so hard as to risk breaking the plastic stand.
I put a sprint and mesh screen over the middle portion of the interior filter stand and again using pull through lubricant greased "greased" the center rubber gasket then I put the tanks top half over/on the bottom and snugged the strap belt tight
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