


K&N Air Filter Vent Kit - White - 90 Degree Plastic 0.50in Flange 1.75in H 1.75in L
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
K&N Air Filter Vent Kit - White - 90 Degree Plastic 0.50in Flange 1.75in H 1.75in LUniversal adapters for smog tubes, crankcase and valve cover vents. Requires drilling hole in air filter base or valve cover. All come with mounting hardware and gasket.
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Your K&N Air Filter Vent Kit - White - 90 Degree Plastic 0.50in Flange 1.75in H 1.75in L orders ship within 1-2 business days.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.4 ★★★★★
Based on 407 reviews
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Product Reviews
★★★★★ 5
Works in 2019 Subaru Outback!
If you are looking for an engine air filter to fit in your 2019 Subaru Outback then look no further -this one will fit. I tried two others that would not allow me to close the compartment door with the latches. This one slipped in like a hand in a glove.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
★★★★★ 5
great filter at a great price!
Fit perfectly in the filter box, looks well built as far as gas improvement its to early to tell, car drove fine with is installed but it was just installed last night and I have only driven it 30 miles since the install!! I will update if it changes but the price sold me on this along with other reviews! I would buy again at this point!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 5, 2025
★★★★★ 5
Good value
Good filter and cheaper than the auto-shop.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 26, 2026
★★★★★ 5
Air filter
Fit perfect. Easy installation
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
★★★★★ 5
Car filter
Great.
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Reviewed in the United States on May 18, 2026
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