


K&N Round Air Filter 14in OD / 12in ID / 2.313in Height
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
K&N Round Air Filter 14in OD / 12in ID / 2.313in HeightThe K&N E 3740 replacement air filter is designed to increase horsepower and acceleration by reducing restriction and increasing air flow to your engine. The E 3740 is made with oiled layers of woven cotton that offer superior filtration and can be washed and reused repeatedly. K&N replacement air filters can go up to 50,000 miles before cleaning is required, depending on driving conditions. One K&N replacement air filter costs less than replacing
Quick Dispatch:
Your K&N Round Air Filter 14in OD / 12in ID / 2.313in Height orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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You'll receive a tracking link by email once your K&N Round Air Filter 14in OD / 12in ID / 2.313in Height ships.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.3 ★★★★★
Based on 137 reviews
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Product Reviews
★★★★★ 5
Nice and durable
Color: Black (Trifold)
The trifold is a bit thick, but fits right where my old leather wallet sat. Lots of room for cards and cash.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
★★★★★ 5
Awesomeness 👌🏽
Color: Black (Bifold)
Love it perfect fit
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Reviewed in the United States on April 22, 2026
★★★★★ 4
8/10 Front Pocket Wallet
Color: Black (Front Pocket)
It's a pleasing solution for me. The slim, pocketed design fits well in my front pocket. It probably fits other pockets well too.
It's not perfect. But, it's solving for an imperfect solution that Apple is takling with their phones. Tap to pay with phones and digital ID will change the market for wallets.
The physical size of cards limits how readily you can access any one card. It takes a bit of extra dexterity to pinch or slide some of the cards out. Ideally you'd have 4 on the outside, with remaining cards tucked in the center pocket. I just need more than 1/4 inch of card face to slide one out readily.
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Reviewed in the United States on April 12, 2026
★★★★★ 5
Very nice wallet.
Color: Carhartt Brown (Trifold)
Very nice.
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Reviewed in the United States on April 22, 2026
★★★★★ 5
Size
Color: Black (Bifold)
It’s not a thick wallet, which is what my husband likes. Makes sitting or driving for long periods with it in his back pocket better. Has everything larger wallets have. Will purchase it again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026