K&N 2017-2020 Honda Civic Si 1.5L Typhoon Performance Air Intake System

If you're looking to give your Honda Civic Si a little extra oomph, the K&N cold air intake system is a solid choice. This isn't just another aftermarket part—it's designed to boost your horsepower and torque in a way that you can actually feel. With a mandrel-bent aluminum intake tube, this setup is built to maximize airflow and performance.

The heart of the system is the washable, reusable High-Flow Air Filter. Made from oiled cotton filter media, this oversized, conical filter lets you go up to 100,000 miles between cleanings under normal highway driving. That means less time messing around with maintenance and more time enjoying the drive. Just know that if you're in California, you'll want to check the CARB status since some intakes aren’t street legal there.

Installation? It's a breeze. You can typically get this bad boy bolted on in under an hour, which is great if you’re eager to hit the road. And it comes with everything you need—five clamps, two couplers, and even the oil for the filter. Seriously, it's all there.

Here's what you can expect: an estimated horsepower gain of about 11.15 HP at 4371 RPM. That’s a noticeable bump for your Civic Si, especially if you like to push it a bit. Plus, the candy red powder-coated intake pipe adds a nice touch under the hood.

Now, let's talk specifics:

• Air Filter Color: Red
• Air Filter Material: Cotton Gauze
• Estimated Horsepower Gain: 11.15 HP @ 4371 RPM
• Weight: 8.6 lb (3.9 kg)
• System Type: Complete Cold-Air Intake System
• Fitment: This system is designed for the Honda Civic Si 2020, and it fits the 1.5L 4-Cyl. models from 2017 to 2020.

Technical Drawing
Installation Instructions


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