


Injen 99-00 Civic Si Polished Cold Air Intake
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Injen 99-00 Civic Si Polished Cold Air IntakeAdd some easy horsepower to your Ride with this RD Series Performance cold air intake (CAI) from Injen Technology! The engineers at Injen have spent considerable amounts of time designing, testing, and perfecting this CAI to produce some serious bolt on power while also providing amazing engine bay aesthetics. In addition to the impressive power increase, the Injen team has ensured that safe Air fuel (A F) ratios are maintained throughout the
Quick Dispatch:
Your Injen 99-00 Civic Si Polished Cold Air Intake orders ship within 1-2 business days.
Delivery Options:
- 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
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★★★★★ 5
Todo perfecto 10/10
Todo muy bien 10/10 exelente.
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Reviewed in the United States on March 21, 2026
★★★★★ 5
N54 engine — it fit absolutely perfectly.
N54 engine — it fit absolutely perfectly.
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Reviewed in the United States on March 17, 2026
★★★★★ 5
Works well
This works as a fancy oil cap remover. I wish my oil cap looked this nice.
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Reviewed in the United States on May 25, 2025
★★★★★ 3
Well built
Well made product. I have an volvo xc60 and it fits the oil filter housing perfectly but because of its thickness, there's some interference with the heat shield or it could be part of the skid plate assembly that is next to the filter housing.
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Reviewed in the United States on April 23, 2025
★★★★★ 5
Fast delivery and good quality part
Good quality snug fit. Works as should.
Only issue I had was whe tightening oil cap back on the 18 ft-lb torque made this part slip.
I used material to get a better grip and torqued slow but it still slip before the torque gauge read 18.5
No leaks! So it’s all good 😊
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Reviewed in the United States on April 15, 2026