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Pentair Quad DE Filter Bottom Bulkhead — Part 178575

Marsoni M251S
Sale price$32.99
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Pentair Quad DE Filter Bottom Bulkhead — Part 178575The Pentair 178575 Bottom Bulkhead is a factory original replacement fitting engineered for Pentair Quad DE, Clean & Clear Plus, and FNS Plus filter systems. As a key structural connection point, this bulkhead preserves the integrity of the filter housing and ensures water passes through the system without leakage. Manufactured to Pentair's original design specifications, it sustains steady water flow and promotes efficient filtration under normal
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  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.2 ★★★★★
Based on 1859 reviews
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C
Verified Purchase
Carole R. NAPOLI
Houston, US
★★★★★ 5
Great filter
Size: AF741
Fit out Toyota Prius V 2014 perfect. Well made too.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
D
Verified Purchase
Dustin B
Waukegan, US
★★★★★ 5
Fits 2010 Subaru Forester with 2.5 non-turbo
Definitely looks and feels like a better than OEM air filter. Not sure of any other benefits.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
A
Verified Purchase
Amazon Customer
Birmingham, US
★★★★★ 5
Fits
Fits a 15 Subaru Forester, working great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
B
Verified Purchase
Bob
Lake Worth, US
★★★★★ 5
Good Quality, Good Price for a Subaru Replacement Air Filter
Look like a great name brand filter. Not a bad price for a Subaru (2013) replacement. I will buy again if available.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
L
Verified Purchase
Lance Low
Dallas, US
★★★★★ 5
It works!
Fitment was great on my 2014 Subaru Crosstrek. Construction was solid and great that I don’t have to worry about changing it for 18,000 miles. Would purchase again.
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Reviewed in the United States on March 26, 2026

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