Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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Description
K&N Round Air Filter 14in OD / 12in ID / 2.313in HeightExperience the ultimate in engine performance and air filtration with the K&N Round Air Filter, model E 3740. Designed to maximize airflow while providing excellent filtration, this drop in filter is a perfect upgrade for enthusiasts looking to enhance their vehicle's breathing capabilities. Crafted with precision, the filter measures 14 inches in outside diameter, 12 inches in inside diameter, and stands 2. 313 inches tall. Its round design is
Experience the ultimate in engine performance and air filtration with the K&N Round Air Filter, model E-3740. Designed to maximize airflow while providing excellent filtration, this drop-in filter is a perfect upgrade for enthusiasts looking to enhance their vehicle's breathing capabilities.Crafted with precision, the filter measures 14 inches in outside diameter, 12 inches in inside diameter, and stands 2.313 inches tall. Its round design is engineered to fit seamlessly into your existing setup, reducing installation hassle and boosting engine efficiency.
Constructed from high-quality materials, this air filter ensures durability and longevity, maintaining superior performance even under demanding conditions. Trusted by motorsport professionals and hobbyists alike, the K&N Drop In Air Filter offers reliable filtration with a fine mesh media that captures contaminants effectively while allowing ample airflow.
Upgrade your ride with K&N Engineering's commitment to quality, supported by Tuningsupply's expert service and lightning-fast European shipping. Whether you are tuning your hot rod, V8, or kit car, this air filter is an essential component for achieving optimal engine response and longevity.
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
4.6 ★★★★★
Based on 277 reviews
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Product Reviews
★★★★★ 5
Great house pants
Color: Black, Size: 42
these pants are very comfortable and fit well. Perfect for the summer in the desert
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Reviewed in the United States on April 11, 2026
★★★★★ 1
They run short
Color: Khaki, Size: 36
They run short and then when you wash them they get even shorter I wash them in cold water and I don't dry them all the way I pull them out and they still are short
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Reviewed in the United States on June 9, 2026
★★★★★ 3
Husband doesn't like!
Color: Navy Blue, Size: 34
My Husband does not like the way they look. The quality and the material.
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Reviewed in the United States on March 28, 2026
★★★★★ 5
Comfy pants!
Color: Camel, Size: 34
These elastic waist pants fit my son perfectly. He has difficulty with buttons and zippers so this is his best bet in order to look a little more fancy. The fit very well and are true to size. They are a little thin, but they look nice.
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Reviewed in the United States on February 18, 2026
★★★★★ 5
NICE AND STRETCHY
Color: Navy Blue, Size: 42
These pants are made of a material that seems durable and is definitely comfortable, and they have a stretch band at the waist that can comfortably accommodate many different belly girths-- from slim to portly. The waist also has a drawstring. I'd call these light weight pants, as the material is thin. They aren't baggy at all and fit the natural contours of an average male physique.
The pants have two fairly deep front pockets and one small rear pocket that can easily fit a regular-sized wallet. But, I would not recommend carrying a wallet in the rear pocket, as, due to the depth of the pocket being only as deep as the wallet is long, it might slip out as you move around, sitting and rising.
If nature calls, and you need to pee, you will have to pull your pants down and excite anyone in the immediate vicinity, as there is no opening, either buttoned or zippered, in the front of the pants. So, in that respect they are kind of like sweatpants. I'd call these pants good for inside the house or wearing on the street.
I like them despite the lack of a fly, so I give 5 stars. I see lots of Chinese, Korean, and Japanese guys around who like to wear this type of pant, but these fit nicely for generally larger and more robust Caucasians type physiques as well. You don't have to worry about a belt or a broken fly zipper with these.
Of course they are made in China, but due to their vast experience selling clothing to Americans, the manufacturers are well acquainted with big masculine American bodies and their needs.
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Reviewed in the United States on January 9, 2026