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CSTuned Flex-Fuel Custom E-Tune (COBB)

Marsoni M251S
Sale price$274.50
Pay 4 payments of $68.62 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
CSTuned Flex-Fuel Custom E-Tune (COBB)A powerful and reliable flex fuel (two octane boundaries) custom remote tune (e tune) from a certified COBB ProTuner! Increased Horsepower and Torque Customizable and Engaging Drivability Greater Reliability and Peace of Mind Superior Fuel Economy Unmatched Customer Support For questions regarding flex fuel calibrations, custom features, the tuning process, recommended maintenance, or anything else, please submit a ticket directly to CSTuned using the
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Your CSTuned Flex-Fuel Custom E-Tune (COBB) 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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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]
  • Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 148 reviews
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Verified Purchase
Lane
San Leandro, US
★★★★★ 5
Perfectly Fine and Inexpensive
This off-brand filter was $10 cheaper than the local auto store, nearly $20 cheaper than the dealership, and meets the original OEM requirements. My husband is an ASE certified master technician and does all of our car maintenance and repair work himself and purchasing this filter rather than getting the filter from the dealership or the local auto store saved us a good bit of money and it is the same quality. Just make sure that the OEM number is correct for your vehicle and you have nothing to worry about.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 14, 2025
C
Verified Purchase
C
Belleville, US
★★★★★ 5
Easy to install
Very easy to install this engine filter and checking the compatibility with my car was super easy too. I took me about 5 minutes to look up, learn, and install this. Loved that I saved money by installing it myself instead of getting overcharged but the shop. Works for a 2017 Honda Fit.
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Reviewed in the United States on September 12, 2025
E
Verified Purchase
Evan Michael Roth
Carnegie, US
★★★★★ 5
Fit in a 2019 Honda Fit
It's indeed an air filter and it fit in my 2019 Honda Fit. Saved me some money compared to the ones offered at oild change places. Seems good build quality and I don't forsee any issues.
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Reviewed in the United States on August 12, 2024
A
Verified Purchase
Amazon Customer
Port Orchard, US
★★★★★ 5
Fit my car perfect
Great value and easy to replace
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Reviewed in the United States on July 19, 2025
B
Verified Purchase
BLTFresh
Draper, US
★★★★★ 5
Perfect fit for my 2015 Fit
Excellent, easy to replace and a great value, thank you!
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Reviewed in the United States on June 24, 2024

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