Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 15 - Jul 20
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Description
K&N BMW E90/91/93 335I N54 Engine Performance Air Intake SystemThe K&N Performance Airbox is designed to dramatically reduce air flow restriction as well as smooth and straighten air flow. Replacing the restrictive factory air filter and air box allows your engine to inhale more air than with the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. A fully enclosed injection molded air box connects to the factory air intake hose. The removable lid
The K&N Performance Airbox is designed to dramatically reduce air flow restriction as well as smooth and straighten air flow. Replacing the restrictive factory air filter and air box allows your engine to inhale more air than with the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. A fully enclosed injection molded air box connects to the factory air intake hose. The removable lid provides easy access to the filter when cleaning is required. This performance air box is relatively easy to install. The required tools are commonly available and it uses the previous air box space. These air box systems are built to last for the life of your vehicle and they're backed by K&N's No-Hassle Lifetime Limited Warranty. Some K&N 57S Series Performance Airboxes are compliant with the latest TUV emissions and sound regulations. Check the K&N catalog or website for vehicle applications and specific TUV status for each vehicle and air intake.Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.3 ★★★★★
Based on 2240 reviews
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Product Reviews
★★★★★ 5
This is a good work or travel bag.
Color: Black, Size: Large
This is a good size bag, light with lots of compartments on the inside and outside of the bag. Fit my laptop perfectly with room for much more inside.
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Reviewed in the United States on April 2, 2026
★★★★★ 5
Best diaper/traveling bag!!
Color: Desert, Size: Large
Absolutely LOVE this bag!! The fabric of the bag was better than I even expected. It’s super soft, comfortable, easy to wipe down, has plenty of storage, sturdy even without stuffing it full, and is the perfect bag! It feels nice and thick without it being heavy. The zipper is also very durable and isn’t cheap feeling compared to other brands. I will definitely be ordering more in the future even to use for just traveling. I switched from a book bag diaper bag style to this bag and I feel like it holds even more! Plus, I love that you can expand this bag!! You won’t regret buying this one!!
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Reviewed in the United States on April 6, 2026
★★★★★ 4
Durable, spacious and good quality
Color: Black, Size: Large
Wish it was more stylish but only thing I can say is WOW!
If you carry around you whole life in many bags this is all you need. Very durable!
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Reviewed in the United States on March 23, 2026
★★★★★ 5
My new travel bag!
Color: Chocolate, Size: Large
I love this bag. It will be my new travel bag, replacing my back pack. It has lots of pockets and looks fashionable. I love that it’s expandable. It will be helpful for those trips where I seems to bring back more than I originally packed. 🤭. The shoulder straps are long enough to give you adequate space to carry on your shoulder. I also live that it has a strap to put on that handle of your luggage. The size is perfect for fitting under the seat in front of you when flying. If it holds up during my next trip I will definitely return to purchase other colors. Great bag for the price!
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Reviewed in the United States on May 14, 2026
★★★★★ 5
10/10 favorite bag of all time.
Color: Chocolate, Size: Large
LOVE this bag so much!! I use it for work and it fits my change of clothes, lunch box, water bottle, headphones, book, and a little extra.
It fits everything you need with so many organizing pockets and tons of room, zipper is great, accessibility is great etc etc. It's nylon-ish feeling in terms of material, and washable which I love. Would recommend this as a dupe to baggu as well. I also love the chocolate color, my favorite!
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Reviewed in the United States on March 8, 2026
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