Mishimoto Performance Air intake | 17-20 Civic Si

Fits:

• 2017 - 2020 Honda Civic Si

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The factory airbox on the Civic Si is designed for quiet operation, not performance. The Mishimoto Performance Air Intake replaces it entirely with a free-flowing system that adds horsepower, improves throttle response, and delivers an aggressive intake tone that makes the engine feel as lively as it sounds.

A CNC-machined MAF housing ensures accurate, consistent sensor readings for a smooth power band, while a powder-coated heat shield between the filter and exhaust manifold significantly reduces heat soak. The included oiled air filter offers 85% greater surface area than stock and is fully serviceable for a lifetime of use. Installs in under an hour with no tune required. Designed in Delaware, USA.

Features

• Replaces restrictive factory airbox for improved airflow and power
• CNC-machined MAF housing — accurate, consistent sensor readings
• Powder-coated heat shield — significantly reduces heat soak
• Oiled air filter with 85% greater surface area than stock
• Fully serviceable filter — clean and reuse for lifetime of the car
• Aggressive intake tone — major improvement over stock
• Includes silicone coupler, clamps, and all hardware
• Installs in under one hour — works with stock tune
• Mishimoto Lifetime Warranty