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Black Knight 4" Dia x 9" Long Filter Brushes - 6 Pack

Marsoni M251S
Sale price$14.95
Pay 4 payments of $3.74 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Black Knight 4" Dia x 9" Long Filter Brushes - 6 PackWhat are Black Knight Filter Brushes: Black Knight filter brushes are made from the very highest quality Hydrotek polypropylene twisted into two stainless steel wires to form a cylindrical brush with a loop at one end for hanging. The other end is capped with a plastic knob for safety. They last indefinitely and are the easiest to use, most efficient and most cost effective pond filter medium you can buy. Our brushes are used in filtration systems in
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 663 reviews
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Product Reviews
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Verified Purchase
Kimmy
Whiting, US
★★★★★ 5
Effective
Size: 8" x 10" x 2"
Works great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 19, 2025
J
Verified Purchase
Joseph Bod
Battle Creek, US
★★★★★ 5
Fits 2021 Acura TLX
Size: 8" x 10" x 2"
Amazon garage and mfg website hadn't caught up, yet: this does fit the 2021 Acura TLX SH-AWD. No problems. New way of getting access -- pinch sides of glove box and drop off of hinge. Old way required removing an access panel.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 14, 2021
J
Verified Purchase
J
Cuba, US
★★★★★ 5
Worth it.
Size: 8" x 10" x 2"
Super easy to install. The increased airflow is definitely noticeable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 1, 2024
J
Verified Purchase
Jim Russell
Los Angeles, US
★★★★★ 5
Starter
Why did you pick this product vs others?: Good replacement. 
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 20, 2025
W
Verified Purchase
william
Los Angeles, US
★★★★★ 5
Starter works great
Fits and works great 2005 Mercury mariner 3.0
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 29, 2025

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