Best in 7 days
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Description
525 450 043 R21/SC Single Lip Nitrile Rotary Shaft Oil Seal with Garter Spring 4.1/2x5.1/4x7/16 InchSeals are ideal for excluding dirt, dust, water or any other contaminant whilst retaining lubricant in rotary shaft equipment. They are generally used as a means of protecting the bearings of rotating shafts. The term nitrile rubber is used for acrylonitrile butadiene rubber (NBR). This material has very good engineering properties and is a general purpose sealing lip material. It is a copolymer manufactured from acrylonitrile and butadiene that
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.1 ★★★★★
Based on 263 reviews
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Product Reviews
★★★★★ 5
Quality filter at a great price.
Style: CA9401
Great filter, very similar to K&N at a way cheaper price.
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Reviewed in the United States on January 14, 2026
★★★★★ 3
Fit perfectly, but questionably thin.
Style: CA11053A
This was an exact fit for my 2017 Kia Forte S. My only convern is that it is half the width of the stock filters. Hopefully the different material will make the difference over time. Didn't notice a loss or gain of torque or acceleration after swapping for my old dirty filter.
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Reviewed in the United States on June 15, 2025
★★★★★ 5
Increased MPG!
Style: 33-3131
I don't know if it increases power, but it for sure has an increase of 1-2 MPG. About the same MPG increase as a K&N, but half the price.
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Reviewed in the United States on May 4, 2026
★★★★★ 4
Time will tell
Style: CA11053A
As another reviewer pointed out, the OEM paper filter is almost 3 times thicker than this one. All things equal, thicker would mean for filtering surface area. So with less filter media surface area, the filter would clog up quicker. However, since this is washable, maybe that's a moot point. I also noticed on my Hyundai Tucson, the rim of this filter must be slighter thicker because I had a tougher time clipping the filter box closed with this one installed. I am keeping my OEM for now, just in case.
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Reviewed in the United States on December 6, 2025
★★★★★ 5
PhilTop engine filter 1/2 the price of K&N filter No difference
Not much difference than K&N filter But 1/2 the price 100% identical
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Reviewed in the United States on April 17, 2026
