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K&N Filter Universal Rubber Filter Round Tapered 4.5in Flange 5.875in Base 4.5 inch Top 6in Height

Marsoni M251S
Sale price$55.19
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K&N Filter Universal Rubber Filter Round Tapered 4.5in Flange 5.875in Base 4.5 inch Top 6in HeightSKU: RU 4740 UPC: 024844102119 K&N RU 4740 Universal Clamp On Air Filter Round Tapered 4. 5in Flange 5. 875in Base 4. 5in Top 6in Height The K&N RU 4740 universal clamp on air filter fits a wide range of equipment including racing vehicles radio controlled cars generators snowmobiles and tractors. Its round tapered design features a 4. 5 inch centered rubber flange 5. 875 inch base inside diameter 4. 5 inch top inside diameter 6 inch top outside
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4.5 ★★★★★
Based on 286 reviews
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A
Verified Purchase
Adrián
Pawtucket, US
★★★★★ 5
Great coffee grinder!
Color: Silver
Amazing product. Easy to use and has different grades of grinding. Zero noise compared with an electric grinder and more control of the results (consistent). His size and weight make it portable and easy to carry.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
B
Verified Purchase
Basil Walls
Phoenix, US
★★★★★ 4
Quite good as a start grinder
Color: Silver
Very good burr grinder with very functional adjustments. Holds the perfect amount in 1 go for my pour over setup. My only critique is that is has 3 unconnected hopper sections that are quite small and hard to hit. I have to be very careful to not spill and one can fill before the other 2 causing some difficulties closing the crank, but it just takes some self adjustments to get around. Overall I'm very pleased with it for the price.
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Reviewed in the United States on June 1, 2026
D
Verified Purchase
DarthVaderVan
Fort Morgan, US
★★★★★ 5
Great Quality, Great Price.
Color: Black
I have used this for a few days now and it works great. It is very well made and has a large range of adjustability. It is quite small and easy to store. Definitely worth the money.
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Reviewed in the United States on May 6, 2026
C
Verified Purchase
Claude Figueroa
Waukegan, US
★★★★★ 5
Nice Grinder at a Great Price
Color: Black
I bought this to use primarily as a travel grinder and found that it is great for every day use. It is not meant for large amounts but it is perfect for single, smaller brewing situations. The grind selection worked well and I "dialed" the proper ground size for my single sized pour over coffee maker.
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Reviewed in the United States on May 19, 2026
K
Verified Purchase
Karin Conover-Lewis
Dallas, US
★★★★★ 1
Ceramic burr destroyed itself
Color: Silver
For the first two-plus months it worked fine -- the perfect grind and the perfect amount with a full barrel for my oversized coffee mug. I've been using it once daily, more or less, on a medium grind setting of 25, and this morning the ceramic burr started to eat itself. This is not acceptable. Follow up: Circle Joy contacted me and offered to give a full refund on this purchase, which was gratefully accepted. This is outstanding customer service.
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Reviewed in the United States on April 28, 2026

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