Not sure which 2001 BMW 3-Series Air Filters - Custom Fit is right for you? We have over 14143 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"I recently purchased a K&N filter for my 2001 BMW 325i to replace the old stock filter. It truly makes a difference. The engine runs better with a slight increase in power, has a lower idle in first and second gear, and seems a little louder. This is a great product and I look forward to putting one in my new M3 next year." —Zach C from Blacksburg, VA bought a K&N Air Filters for a 2001 BMW 3-Series, 325i, 2.5L 6-cyl. engine.
"I always use k&n on all my cars so this one is
a no brainer. Quality is always good so I'm customer
for life." —Edsel A from Chandler, AZ bought a K&N Air Filters for a 2001 BMW 3-Series, 325i, 2.5L 6-cyl. engine.
"They are great. Over the past two years I've installed the K&N air filters in three cars and have not been disappointed. All three cars are German-made (Mercedes E430, BMW X5, BMW 330xi), and I'm getting between 7 and 10 percent better gas mileage on the highway on all three. They are well worth it." —Peter V from North Bethesda, MD bought a K&N Air Filters for a 2001 BMW 3-Series.
"I have used K&N filters in my motorcycles for 35 years. When it came time for a filter for my car I went with K&N in place of the standard paper filter.
The K&N filter came pre-oiled and fitting the filter and installing a sealing gasket was effortless.
I would recommend a K&N filter to anyone concerned about replacing their stock air filter." —Randy S from Brighton, MI bought a K&N Air Filters for a 2001 BMW 3-Series.