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K&N Cold Air Intake - High-flow, Roto-mold Tube - BMW 320I, 323I, 325i, E34, 170BH 1982-1993

Marsoni M251S
Sale price$137.50
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K&N Cold Air Intake - High-flow, Roto-mold Tube - BMW 320I, 323I, 325i, E34, 170BH 1982-1993Guaranteed to increase horsepower Designed to improve throttle response and engine sound Replaces entire factory air intake system Not legal for highway use in states adopting California emission regulations Washable and reusable lifetime air filter Lasts up to 100,000 miles before service is required (depending on driving conditions) Easy to install, usually in 90 minutes or less K&N No Hassle Lifetime Limited Warranty Replacement Filter RU 5128 Air
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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.
  • To process your return/exchange, please contact us at [email protected]
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4.2 ★★★★★
Based on 1745 reviews
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Verified Purchase
Josh D.
Chelsea, US
★★★★★ 1
Not durable, cheaply made for big guys 6’4 235lbs
Color: Gray Navy, Size: 13-16, Color: Gray Navy, Size: 13-16
Don’t recommend for men. Boys maybe but not men. I wore them twice for about 3 hrs before bed. Went to put in the 3rd time and they ripped. It’s literally a small sheet of Sherpa from the shoe and plastic wrap. I also got the bigger size and they still don’t fit right. I bought these right before my trip upstate during the holidays, because I live in Florida. I paid $20+ for these, hoping they would be good. 1/10 recommend
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 27, 2026
G
Verified Purchase
Guy Mangotree
Battle Creek, US
★★★★★ 4
Size 13 (not 13-16)
Color: Gray Navy, Size: 13-16
I have a size 13 foot and these Winter Socks/Slippers just barely cover the length of my foot, so if you are over size 13 these will be too small_ they are well made and insulated_ they look nice, just like the pic, and I can go from my house to the my car in the snow without the bottoms getting wet_ they are cozy without my feet getting hot_ just wish they were a half inch longer on the foot size to be a more perfect size 13_ they feel about 12-1/2
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Reviewed in the United States on January 10, 2026
G
Verified Purchase
Gary Gaston
West Palm Beach, US
★★★★★ 5
Good product
Color: Long Black, Size: 13-16
Nice
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 27, 2026
M
Verified Purchase
Melanie Chanèl-Rose Leach
Louisville, US
★★★★★ 3
Awesome but loses shape
Color: Long Black, Size: 10-13
This is comfy and keeps my feet warm but definitely doesn't hold shape good to wear indoors but don't think about walking long distances.
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Reviewed in the United States on November 3, 2025
M
Verified Purchase
Mark C.
Houston, US
★★★★★ 5
Comfy, thick, bottoms slick enough to wipe clean easily
Color: Long Black, Size: 10-13
Comfy, thick, bottoms easy to wipe clean . Would buy again. A little hot if anything.
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Reviewed in the United States on July 17, 2025

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