★★★★★ 5
Oil filter.
Size: One Size, Style: Select
Filter and included o-ring fit perfectly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
K&N Audi A4 1.8L Drop In Air Filter
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
K&N Audi A4 1.8L Drop In Air FilterSKU: 33 2945 UPC: 024844239914 K&N 33 2945 Replacement Air Filter for 2009 2017 Audi A4 A5 Q5 Allroad 1. 8L 2. 0L K&N 33 2945 is a direct drop in replacement high flow air filter designed for 2009 2017 Audi A4 A5 Q5 and allroad models with 1. 8L and 2. 0L engines. This washable reusable filter uses layered oiled cotton media to increase airflow horsepower and acceleration while trapping contaminants for engine protection. Backed by K&N No Hassle
Quick Dispatch:
Your K&N Audi A4 1.8L Drop In Air Filter orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your K&N Audi A4 1.8L Drop In Air Filter ships.
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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
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4.3 ★★★★★
Based on 1110 reviews
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Product Reviews
★★★★★ 5
Can’t go wrong with k&n
Size: One Size, Style: Select
Easy to install, works as it should.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 8, 2025
★★★★★ 5
Fits a 3.6 v6 Ram 1500 classic
Size: One Size, Style: Select
Good for my truck
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 16, 2026
★★★★★ 4
Excellent filter. I recommend it
Size: One Size, Style: Select
Arrived on time as promised. I was able to install it easily on my Jeep Cherokee with 3.2L engine. Good instructions and the part seems to be of good quality. Four Stars only as I have just installed it. Filters are passive components, usually can't tell of their long term quality or reliability unless they leak or cause immediate problems. I recommend this part.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Perfect fit
Size: One Size, Style: Select
Been using these for years and always hold up well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 9, 2026
