Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
K&N Custom Round Air Filter 14in OD 12in ID 4in HeightExperience superior engine performance and protection with the K&N Custom Round Air Filter, model E 3730. Designed for enthusiasts seeking high quality filtration, this air filter features a 14 inch outer diameter, 12 inch inner diameter, and a 4 inch height, making it an excellent fit for a variety of applications. Crafted by K&N Engineering, a trusted name in automotive performance, this drop in air filter is engineered to deliver enhanced airflow
Experience superior engine performance and protection with the K&N Custom Round Air Filter, model E-3730. Designed for enthusiasts seeking high-quality filtration, this air filter features a 14-inch outer diameter, 12-inch inner diameter, and a 4-inch height, making it an excellent fit for a variety of applications.Crafted by K&N Engineering, a trusted name in automotive performance, this drop-in air filter is engineered to deliver enhanced airflow while trapping harmful contaminants. The durable construction ensures long-lasting use and reliable performance under demanding conditions.
Upgrade your vehicle’s air intake system with this custom round air filter and enjoy improved throttle response, increased horsepower, and extended engine life. Its easy installation design helps you get back on the road or track faster with peace of mind.
The E-3730 air filter combines efficiency and convenience, backed by K&N’s legacy of expert automotive engineering. Whether you’re tuning your car for street use or motorsport, this product is a dependable choice to keep your engine breathing clean and running strong.
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 1329 reviews
Sort
Product Reviews
★★★★★ 5
Perfect!
Number of Items: 3, Color: Pink Quartz Assorted (3-pairs), Size: Medium
My new favorite socks! True to size, fit perfectly, and the best part is they do not slide off your foot! 10/10 recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 10, 2025
★★★★★ 5
The perfect sock!
Size: 6-10, Color: Halo Gray/Assorted
The only socks that I can wear with my hey dudes. They stay on my ankles and never slid down into the shoe. I will forever order these as long as they are available. They are comfy too!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 21, 2025
★★★★★ 5
Good option, especially in warmer weather
Size: 6-10, Color: Black
High quality socks and very durable. Nice touch adding the grip on the back of the ankle so the sock stays up. Size is a true fit to the size of your foot as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 17, 2025
★★★★★ 5
Love these socks!
Size: 6-10, Color: White
Comfortable, no show, and most importantly The Do No Slip!!!! I keep coming back to add to my supply because they have become the only sock I wear. I’ve been using them for a couple years now and they hold to great to washing, bleaching and the dryer. Highly recommended.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 24, 2024
★★★★★ 5
The only socks I will buy
Size: 6-10, Color: Halo Gray/Assorted
These are hands down my favorite socks to wear with tennis shoes. Bought my original 6 pack in the store, liked them so much I went buy more and they were gone. These don't slip on your heel like most socks do. Come up high enough on the top of your foot to protect from tongue rubbing (I giggled when I wrote that) and they come in fun colors. Love they are ultra no show and provide padding but people can't see them with shoes on. Five stars!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2023