


K&N Filter 4 inch Flange 6 3/4 inch OD Base 5 7/8 inch OD Top 9 1/2 inch Height
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
K&N Filter 4 inch Flange 6 3/4 inch OD Base 5 7/8 inch OD Top 9 1/2 inch HeightK&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio controlled cars, generators, snowmobiles, tractors, and other applications. Regardless of the angle or offset diameter of the air intake, there is probably a K&N Universal air filter for your equipment. All filters are constructed with ultra strong molded pliable rubber flanges which absorb vibration and allow for secure
Quick Dispatch:
Your K&N Filter 4 inch Flange 6 3/4 inch OD Base 5 7/8 inch OD Top 9 1/2 inch Height orders ship within 1-2 business days.
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- 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 Filter 4 inch Flange 6 3/4 inch OD Base 5 7/8 inch OD Top 9 1/2 inch 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.
- To process your return/exchange, please contact us at [email protected]
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4.3 ★★★★★
Based on 612 reviews
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Product Reviews
★★★★★ 5
Nice phone holder
This is a great product. I bought a car that had the base installed so I bought one to be able to use it. Holds great!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 2, 2025
★★★★★ 1
Use locktight red or blue
Product comes loose frequently and its extremely annoying to tighten it takes forever
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 4, 2025
★★★★★ 2
Metal tab blocks magnetic charging
The set screws are too small and they do not have an adapter that fits the magnet charging rings on the newer phones
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 4, 2025
★★★★★ 5
My favorite BMW car mount.
This is my favorite mount for BMWs. I have them on two cars (X4M and a 328), but I always modify the mount and install a metal ball (purchased here on Amazon) so I can mount an ESR Wireless charger.
This combo is the best charging mount and system I have ever tried
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 17, 2023
★★★★★ 5
sturdy mount nice fit
fit nicely and magnet is strong using the included metal disc to put inside phone case. was missing instructions but figured it out. you have to screw in the small set screws until it is snug. using a longer hex key made it easier.
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Reviewed in the United States on August 10, 2023
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