• Cold Air Intake for Honda Civic Si (2012-2015) 2.4L Engine - Red
  • Cold Air Intake for Honda Civic Si (2012-2015) 2.4L Engine - Red
  • Cold Air Intake for Honda Civic Si (2012-2015) 2.4L Engine - Red Default Title

Cold Air Intake for Honda Civic Si (2012-2015) 2.4L Engine - Red

$129.99
$129.99
Free Shipping within USA.
  • Guaranteed Fitment
  • Performance Tested
  • Lifetime Warranty

Want it soon? Order within

I18n Error: Missing interpolation value "end_date" for "Ends on {{ end_date }}"

Feel the instant surge of power you’ve been missing in your Honda Civic Si. Replace the factory’s restrictive design and experience an immediate transformation in throttle response and engine sound.

Performance Cold Air Intake for Honda Civic Si (2012-2015) 2.4L K24Z7

The stock Honda Civic Si (2.4L K24Z7) intake system is designed for quiet operation and cost-effectiveness, featuring a convoluted air box and restrictive pleated paper filter that chokes the engine’s ability to breathe. This bottleneck starves your high-revving K24Z7, limiting its true potential and creating a "laggy" throttle feel, especially when you crave immediate power.

This high-flow cold air intake replaces the entire restrictive factory setup, providing a direct, smooth path for cooler, denser air directly to your engine. By optimizing airflow and reducing intake air temperatures, it allows the 2.4L engine to draw in a significantly larger volume of oxygen, unlocking latent horsepower and torque across the entire RPM range and delivering crisper, more energetic acceleration.

Why You Need This Upgrade

  • Maximized Horsepower & Torque: Unleashes hidden power, delivering a noticeable gain across the entire powerband of your Civic Si’s K24Z7 engine.
  • Instant Throttle Response: Eliminates the notorious "throttle lag" associated with the OEM intake, providing immediate and sharper acceleration feedback.
  • Enhanced Engine Acoustics: Transforms the muted factory intake sound into an aggressive, sporty growl under acceleration, letting you hear your K24Z7 come alive.
  • Improved Fuel Efficiency: Optimizes the air-to-fuel ratio for a more complete combustion cycle, potentially leading to better fuel economy under normal driving conditions.
  • Superior Filtration & Durability: Features a high-flow, washable, and reusable performance air filter combined with robust, heat-resistant piping for long-lasting reliability and engine protection.

Technical Specifications

Fitment 2012-2015 Honda Civic Si (2.4L 4-Cylinder K24Z7 Engine)
Factory Stats Stock: 201 HP / 170 lb-ft
Installation Moderate / 1-2 Hours

Replaces These OEM Applications

Compatible Vehicles:

  • 2012 Honda Civic Si 2.4L
  • 2013 Honda Civic Si 2.4L
  • 2014 Honda Civic Si 2.4L
  • 2015 Honda Civic Si 2.4L

OEM Part Numbers / Cross Reference:

N/A

Upgrade Your Honda Civic Si (K24Z7) Today!

Don’t let a restrictive factory air box hold back your Honda Civic Si (K24Z7). Shop with confidence knowing that we deliver the best Cold Air Intake parts with fast shipping and expert support.

Engine Safety Rating
Difficulty 

Fitment

Make

Honda

Engine Size
  • 2.4L

Year
  • 2012
  • 2013
  • 2014
  • 2015

Installation & Tools

The Wrench Time

  • Estimated Time: 60-90 Minutes
  • Difficulty: 4/10 - Dropping the factory lower resonator takes patience, but the rest is pure bolt-on.

Tools You Will Need

  • 10mm deep socket and ratchet (with extension)
  • 8mm nut driver or socket (for hose clamps)
  • Panel popper tool (for fender liner clips)
  • #2 Phillips screwdriver (or JIS, for MAF sensor screws)
  • Pliers (for factory spring clamps)
Mechanic’s Pro Tip (The "Gotcha"):
The 9th Gen K24Z7 community universally hates the massive factory lower intake resonator. To pull it out without breaking brittle plastics, use a panel popper to carefully remove the push-clips on the driver’s side fender liner. Bend the liner back gently—don’t force it. Also, the factory MAF sensor screws strip instantly if you use a worn screwdriver. Apply firm downward pressure when removing them, and NEVER touch the exposed wire element on the sensor!

Phase 1: Removing the Factory Part for the 2012-2015 Honda Civic 2.4L

  1. Disconnect the Battery: Always start by disconnecting the negative battery terminal using a 10mm wrench to prevent check engine lights and protect the ECU.
  2. Remove the MAF Sensor: Unplug the wiring harness. Use a #2 Phillips screwdriver to carefully extract the two screws securing the Mass Airflow (MAF) sensor to the factory upper airbox. Pull it straight out, place it in a clean plastic baggie, and set it safely aside.
  3. Disconnect Breather Hoses: Use pliers to pinch and slide back the spring clamp on the factory rubber PCV breather hose. Gently twist to break the seal and pull the hose off the intake tube. These tear easily on older K24 engines, so take your time.
  4. Remove the Upper Airbox and Tube: Loosen the throttle body hose clamp using an 8mm nut driver. Unbolt the upper airbox housing using your 10mm socket and extension, then pull the entire upper assembly out of the engine bay.
  5. Extract the Lower Resonator (The Forum Headache): Use your panel popper tool to remove the clips securing the driver’s side front fender liner. Peel the liner back to expose the hidden lower resonator box. Remove the mounting bolts with a 10mm socket and wrestle the plastic box down and out of the bumper cavity.

Phase 2: Installing the Cold Air Intake for Honda Civic Si (2012-2015) 2.4L Engine - Red

  1. Install the Silicone Coupler: Slide the provided silicone reducer onto the throttle body. Secure the throttle body side with a hose clamp and tighten it down snugly using an 8mm nut driver. Leave the clamp for the intake pipe side loose for now.
  2. Mount the New Intake Pipe: Carefully snake the red aluminum intake pipe down into the engine bay where the old resonator used to live. Slide the upper end into the silicone coupler on the throttle body. Bolt the pipe’s welded mounting bracket to the chassis using the supplied hardware and a 10mm socket.
  3. Transfer the MAF Sensor: Carefully insert your factory MAF sensor into the CNC-machined flange on the new intake pipe. Secure it using the newly provided Allen bolts (do NOT reuse the factory Phillips screws). Plug the factory wiring harness back in until it clicks.
  4. Attach Breather Hose and Filter: Connect the supplied PCV breather hose to the nipple on the intake pipe. Down in the fender well, slide the red conical air filter onto the bottom of the intake pipe and tighten the clamp with an 8mm nut driver. Double-check all clamps and bracket bolts to ensure they are fully seated.
  5. Perform the ECU Idle Relearn: Reconnect the negative battery terminal with your 10mm wrench. Start the vehicle. Do not touch the gas pedal for 20 seconds. Let the vehicle idle uninterrupted so the ECU can calibrate to the increased airflow without throwing a lean code.

Disclaimer: This is a general guide provided for the 2012-2015 Honda Civic 2.4L. Always refer to your factory service manual for exact torque specifications and safety procedures.

Warranty

All products are backed by our Limited Lifetime Warranty. We stand by our quality. [See terms]
Cold Air Intake for Honda Civic Si (2012-2015) 2.4L Engine - Red

$129.99