Skip to content

K&N 01-09 Audi A4/RS4/S4 Drop In Air Filter

Marsoni M251S
Sale price$68.99
Pay 4 payments of $17.25 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
K&N 01-09 Audi A4/RS4/S4 Drop In Air FilterSKU: 33 2209 UPC: 024844085580 K&N 33 2209 Replacement Air Filter: 2002 2009 Audi A4 RS4 S4 Drop In The K&N 33 2209 is a washable reusable high flow air filter with layered oiled cotton media for more airflow and better contaminant capture. It serves as a direct drop in replacement for factory air filters in 2002 2009 Audi A4 S4 RS4 models. Gain horsepower and acceleration while protecting your engine for the vehicle's life. Key Features 4 Layers of
Easy Shipping

Quick Dispatch:

Your K&N 01-09 Audi A4/RS4/S4 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 01-09 Audi A4/RS4/S4 Drop In Air Filter ships.

Need Help?
Questions about K&N 01-09 Audi A4/RS4/S4 Drop In Air Filter, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for K&N 01-09 Audi A4/RS4/S4 Drop In Air Filter in your area.

Get Shipping Estimates

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
4.2 ★★★★★
Based on 1248 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
L
Verified Purchase
LORI
New York, US
★★★★★ 5
LOVE THESE
Size: 3 Little Kid, Color: Hot Pink/Multi
Really nice. Pix don’t do them justice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
W
Verified Purchase
Working Momma
Phoenix, US
★★★★★ 5
Great for busy feet
Size: 13 Little Kid, Color: Hot Pink/Multi, Size: 13 Little Kid, Color: Hot Pink/Multi
My five-year-old daughter loves these Skechers slip-ins—and she is not easy on her shoes! You can see in the photo, she’s already put plenty of miles on them. They’ve been through the washing machine at least twice and still look great—the bright colors are a big hit with her and they hold up well in the wash. One of the elastic bands on top did come loose, but I was able to fix it quickly with a dab of superglue. She slips them on and off all by herself, which is perfect as we’re still learning to tie laces. All in all, a great purchase for the price—especially since kids grow so fast and put their shoes through a lot!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2025
K
Verified Purchase
KelQL
Dallas, US
★★★★★ 5
Cute slip-ons - so easy and quick!
Size: 13 Little Kid, Color: Hot Pink/Multi
These shoes are adorable, comfortable according to my kid, and super easy to pull on!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 17, 2026
R
Verified Purchase
Rick
Cuba, US
★★★★★ 5
Durable
Size: 6 Big Kid, Color: Aqua/Multi
Good shoes. True to size
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026
L
Verified Purchase
Linda Wilson
Pawtucket, US
★★★★★ 5
Her go to pair!
Size: 13 Little Kid, Color: Lavendar
Good quality shoes and she loves them! Slips her foot right in! Her go to pair !
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026

recommand products