Nitrous Express 4AN Pure-Flo N2O Filter & 7 Stainless Hose (Lifetime Cleanable)

Nitrous Express 4AN Pure-Flo N2O Filter & 7 Stainless Hose (Lifetime Cleanable)

Marsoni

M251S

$92.63

Get it in 3 business days with 1 day shipping. Friday, May 29

Nitrous Express 4AN Pure-Flo N2O Filter & 7 Stainless Hose (Lifetime Cleanable)The Pure Flo N2O Filter features a stone element filter that can be reused season after season. The Pure Flow N2O Filter housing is crafted of Aluminum with both 4AN size inlet and outlet fittings. The patented Pure Flow N2O Filter also features the same internal diameter of a 4AN line ensuring maximum flow and reliability. 7 in. 4AN Stainless Steel hose is included. Certificate of Origin Warranty

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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.
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So a Toyota dealer will want $40+ to replace this filter, but for $10 and 2mins you can easily do this yourself. There’s a great 1:30 how-to vid on the YouTube, drop the glove box (one push) open the little door, remove old filter (note the arrow) and put in the new one, close door, close glove box, enjoy better flow and fresh air. This filter is a HEPA so it’s a performance upgrade over the OEM, fit is perfect, seems sturdier than the OEM, great value if you’ve got 2mins. Highly recommend. Thanks!

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Reviewed in the United States on June 23, 2025

Verified Purchase

Karen Michael-Pook

Natrona Heights, US

★★★★★ 5

Awesome Cabin Air Filter

Style: BE-151H 1-Pack

This product is not only cost efficient, it was also easy to install. The instructions in the package were helpful. I would definitely recommend using this filter for your 2017 Hyundai Sonata.

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Reviewed in the United States on May 13, 2026

Verified Purchase

milt loper

Charlottesville, US

★★★★★ 4

the "fit" is very precise

Style: BE-176H 1-Pack

Nice Fabrication, Good materials, perfect adhesive applications, "clean joints" etc. Appears to be a good UPGRADE from the stock Motorcraft product. CONs: The FIT was a "smidge TIGHT", and took very precise initial alignment and "pressure" to begin to slide into the rectangular hole. I measured the "Hole" at 7.375" wide, or (187.33 mm)... the FILTER is exactly the SAME. I would suggest maybe reducing the Width by 1 mm, to allow for an easier installation. The MOTORCRAFT uses an "open-cell" foam structure for the (2) Side pieces on their filter assembly, allowing some "compression to fit", of the Width, easing the difficulty of installation, yet still filling all voids. In summation, the "fit" is very precise. Not to be hurried or rushed, maybe a bit meticulous for the impatient or weak of heart.

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Reviewed in the United States on April 2, 2025