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K&N Universal Clamp-On Air Filter 4-1/2in FLG / 5-7/8in B / 4-1/2in T / 8-3/8in H

Marsoni M251S
Sale price$63.19
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K&N Universal Clamp-On Air Filter 4-1/2in FLG / 5-7/8in B / 4-1/2in T / 8-3/8in HSKU: RU 1008 UPC: 024844373595 K&N Universal Clamp On Air Filter 4 1 2in FLG 5 7 8in B 4 1 2in T 8 3 8in H K&N RU 1008 is a round tapered universal clamp on air filter built for racing vehicles, radio controlled cars, generators, snowmobiles, tractors, and custom intakes. Its pliable rubber flange stretches up to 1 16 inch for secure fit on 4 1 2 inch diameters regardless of angle or offset. Pre oiled cotton gauze media traps dirt while increasing
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Exchange/Return Notes
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4.4 ★★★★★
Based on 1232 reviews
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T
Verified Purchase
Timothy Dettman
Lake Worth, US
★★★★★ 5
Works great
Works great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026
F
Verified Purchase
Fivestarr
Whiting, US
★★★★★ 5
exact fit
working good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
J
Verified Purchase
Joe Cruz
Massapequa, US
★★★★★ 5
Fast delivery.
Great product. OEM spark plugs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 5, 2026
A
Verified Purchase
Aspen Valdez
Lake Worth, US
★★★★★ 5
Fits 2011 335xi n55 prefect
Fits my 2011 335xi n55 engine perfectly. Comes on and off easily and gets the filter loose quickly. Amazing quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
C
Verified Purchase
Clint
Carnegie, US
★★★★★ 5
Works perfect for BMW S63 engine.
I used this to change the oil on my BMW M8 with the S63 engine. It was a perfect fit. It extended far enough onto the filter housing to be quite secure with no risk of slipping off and stripping the housing. It was snug on the housing and did not bind up due to having a loose fit. The tool feels well-built and I suspect it will outlive me given my occasional personal use. It would still probably hold up well even for daily shop use as long as it was not abused (repeatedly dropped, slammed around, etc).
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Reviewed in the United States on September 8, 2025

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