• Cold Air Intake for Honda Civic Si (2006-2011) 2.0L L4 Engine
  • Cold Air Intake for Honda Civic Si (2006-2011) 2.0L L4 Engine
  • Cold Air Intake for Honda Civic Si (2006-2011) 2.0L L4 Engine
  • Cold Air Intake for Honda Civic Si (2006-2011) 2.0L L4 Engine
  • Cold Air Intake for Honda Civic Si (2006-2011) 2.0L L4 Engine Default Title

Cold Air Intake for Honda Civic Si (2006-2011) 2.0L Engine

$94.99
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Maximize VTEC Induction for your 2006-2011 Honda Civic Si K20Z3

Who It’s For: Designed specifically for 8th Generation Honda Civic Si owners running the legendary K20Z3 engine. Whether you’re daily driving a FA5 sedan or carving corners in an FG2 coupe, this is for the driver who wants to hear the VTEC crossover and feel the engine breathe better at the top of the tachometer.

The Problem: The stock airbox on the K20Z3 is a maze of plastic resonators and restrictive baffles designed by the factory to prioritize silence over performance. This creates unnecessary turbulence and traps heat, which can lead to heat soak during spirited driving or summer commutes, ultimately stifling the 197-horsepower potential of your high-revving four-cylinder.

The Solution: This intake replaces that bulky factory assembly with a streamlined, mandrel-bent T304 aluminum pipe and a high-flow cone filter. By smoothing out the intake path, we’ve allowed the K-Series to draw in air more efficiently, resulting in sharper throttle response and that signature aggressive induction roar that every Honda enthusiast craves.

Why This is the Ultimate Upgrade

  • Optimized Airflow: High-flow T304 lightweight aluminum piping reduces intake restriction, allowing for power gains of up to 10% in horsepower and torque across the powerband.
  • Superior Filtration: The included washable, reusable performance filter provides exceptional protection against debris while maintaining high CFM levels; it only needs servicing every 50,000 miles.
  • Bolt-On Simplicity: This is a true "Saturday Morning" project. It fits both manual and automatic models and installs in under 60 minutes using basic hand tools with no permanent modifications required.

Technical Specifications

Fitment 2006-2011 Honda Civic Si
Engine Family K20Z3 (K-Series)
Factory Ratings 197 HP & 139 lb-ft Torque
Part Numbers Performance Intake System 2.0L L4

Compatibility & OEM Reference

Fits the Following Vehicles:

  • 2006 Honda Civic Si (2.0L L4 Engine)
  • 2007 Honda Civic Si (2.0L L4 Engine)
  • 2008 Honda Civic Si (2.0L L4 Engine)
  • 2009 Honda Civic Si (2.0L L4 Engine)
  • 2010 Honda Civic Si (2.0L L4 Engine)
  • 2011 Honda Civic Si (2.0L L4 Engine)

Interchange Part Numbers:

2006, 2007, 2008, 2009, 2010, 2011, HONDA-CIVIC-SI-20L-INTAKE

The Performance Promise

Buy with confidence. As tuners, we know that the K-Series loves to breathe. This kit is designed to survive the heat of the engine bay while giving you the performance and sound your Si deserved from the factory. Backed by real automotive experts and fast shipping.

Engine Safety Rating
Difficulty 

Fitment

Make

Honda

Engine Size
  • 2.0L

Year
  • 2006
  • 2007
  • 2008
  • 2009
  • 2010
  • 2011

Installation & Tools

The Wrench Time

  • Estimated Time: 90-120 Minutes
  • Difficulty: 4/10 - Requires front bumper removal for optimal fender well routing and delicate sensor handling.

Tools You Will Need

  • 10mm deep socket and ratchet with a 6-inch extension
  • 8mm socket or flathead screwdriver (for hose clamps)
  • Panel popper tool (essential for the brittle factory bumper and cowl clips)
  • #2 Phillips screwdriver (for the MAF sensor)
  • Needle-nose pliers (for factory spring clamps on breather hoses)
Mechanic’s Pro Tip (The "Gotcha"):
The forum consensus for the 8th Gen FA5/FG2 chassis is clear: do not fight the factory wheel well liner blind. To correctly route a true cold air intake into the driver-side fender well of the K20Z3 without risking vacuum leaks or hydro-lock clearance issues, take the extra 10 minutes to pull the front bumper cover. Also, the factory MAF sensor screws are made of notoriously soft metal—do not use a power drill to remove them or you will strip the heads instantly.

Phase 1: Removing the Factory Part (2006-2011 Honda Civic 2.0L)

  1. Disconnect the Battery: Always start by disconnecting the negative battery terminal using a 10mm wrench to prevent check engine lights and allow the ECU to reset.
  2. Unplug the MAF Sensor: Locate the Mass Air Flow sensor on the factory airbox. Carefully depress the plastic tab and pull the harness connector straight back. Do not yank the wires.
  3. Remove the Factory Intake Hose: Use an 8mm socket to loosen the hose clamp at the throttle body. Next, use needle-nose pliers to squeeze the spring clamps and disconnect the PCV breather lines attached to the factory rubber intake tube.
  4. Unbolt the Upper Airbox: Grab your 10mm deep socket and 6-inch extension to remove the bolts holding the bulky K20Z3 upper airbox assembly to the chassis. Lift the box out of the engine bay.
  5. Drop the Front Bumper and Lower Resonator: Use a panel popper tool to remove the upper radiator cover push-clips, and a Phillips screwdriver/10mm socket for the lower and wheel arch bolts. Pull the bumper cover off. With the bumper out of the way, use a 10mm socket to unbolt and extract the factory lower intake resonator hidden behind the driver-side fog light area.

Phase 2: Installing the Cold Air Intake for Honda Civic Si (2006-2011) 2.0L Engine

  1. Transfer the MAF Sensor: Using a #2 Phillips screwdriver, very carefully remove the two screws holding the MAF sensor in the factory housing. Gently extract the sensor without touching the delicate element inside. Seat the sensor into the new intake pipe and secure it using the supplied hardware.
  2. Mount the Silicone Coupler: Slide the provided silicone coupler onto the throttle body. Slide the hose clamps over the coupler and loosely tighten them with an 8mm socket so you still have room for adjustment.
  3. Route the Cold Air Intake Pipe: Guide the new aluminum intake pipe down through the hole in the chassis into the driver-side fender well area. Push the upper end into the throttle body coupler.
  4. Secure the Bracket and Filter: Locate the welded bracket on the new intake pipe. Line it up with the factory lower resonator mounting hole and secure it using a 10mm socket and the supplied vibration mount. Attach the high-flow air filter to the bottom of the pipe in the fender well and lock it down with an 8mm socket.
  5. Reconnect and Relearn: Plug the factory MAF harness back into the sensor until it clicks. Attach the PCV breather lines to the new pipe ports. Reinstall the front bumper and reconnect the negative battery terminal. On the first startup, the vehicle gas pedal should not be touched for a 20 seconds until the ECU adjusts to the new airflow volume.

Disclaimer: This is a general guide provided for the 2006-2011 Honda Civic 2.0L. 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 (2006-2011) 2.0L Engine

$94.99