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2001 Audi S4 Air Filters

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Latest Customer Reviews

K&N Air Filters Reviews


K&N vs OEM/stock

Reviewed By Scott W (Indianapolis, IN) Reviewed for a 2001 Audi S4 —8/25/2006 4:50 AM

I purchased a K&N air filter for my 2001 Audi S4 recently, and there's a slightly noticeable increase in horsepower. Quick shipping from the distributor. Highly recommended.

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aFe Pro-Dry S Air Filters Reviews


Good Product

Reviewed By Anthony D (SAN LEANDRO, CA) Reviewed for a 2013 Audi S4 —6/3/2014 8:52 AM

Just installed this air filter and it looks great. Slight increase in power. Still waiting to crunch the numbers on fuel economy. I definitely prefer this filter to one you have to re-oil. Overall I'm happy with my purchase.

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K&N Cold Air Intake Replacement Filters Reviews


K&N Filter Purchase

Reviewed By Marc I (TUCSON, AZ) Reviewed for a 2009 Dodge Ram —3/24/2020 7:09 PM

Can't give 5 stars for all of the categories, because the filter that was provided has a hole in the metal end, intended to use the stock air filter minder. However, my vehicle already had a K&N cold air intake on it and I bought this filter to have one to immediately replace the dirty one, clean, oil it and put it a way for the next time. The filter is supposed to come with a rubber plug so that a person wouldn't have to use the stock filter minder. I'm disappointed, that it was not provided.

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