Product Specifications
Cold Air Intake for the 2006-2011 Honda Civic 1.8L R18
Replacing the factory airbox on a 2006-2011 Honda Civic 1.8L is one of the simplest ways to change how the car breathes, and this Flashark cold air intake does it with a bolt-on aluminum pipe, a washable cone filter, and a heat shield that separates the filter from engine-bay heat. Owners who want a more noticeable induction tone under acceleration and a filter they clean and reuse rather than replace usually start here.
Specifications
| Specification | Detail |
|---|---|
| Brand | Flashark |
| SKU | FLIS25100 |
| Type | Cold air intake kit |
| Style | Heat-shield cold air intake |
| Intake pipe material | Aluminum piping |
| Finish and color | Polished pipe with a red cone filter |
| Air filter | Cone filter, washable and reusable |
| Installation | Bolt-on with common hand tools, typically under 60 minutes |
| Package weight | 3.3 kg (7.3 lb) |
Key Features
- Heat-shielded intake: A heat shield surrounds the cone filter and separates it from engine-bay heat, so the filter sits in a more protected area than an exposed open-element filter.
- Aluminum intake pipe: The intake tube is built from T-304 aluminum for strength and durability, replacing the factory airbox and intake tube on the Civic 1.8L.
- Washable, reusable cone filter: The cone filter cleans up and goes back in service instead of being thrown away like a disposable paper element.
- Improved airflow: Air reaches the engine through a high-flow cone filter and an aluminum intake pipe rather than the factory airbox, which supports sharper throttle response.
- Bolt-on installation: The kit installs in under 60 minutes with common hand tools, using your Civic's factory mounting points and connections.
- Expected output range: Typical intake-only gains for this application are approximately 5-10 horsepower and 6-8 percent of torque. Actual results depend on engine condition, intake-air temperature, exhaust flow, fuel quality, ECU behavior, and how the car is tested.
- Deeper intake tone: Replacing the sound-dampening factory airbox with an aluminum pipe and cone filter makes the induction sound more noticeable under acceleration, while the heat shield keeps engine-bay air away from the filter.
Who this is for
This Flashark cold air intake replaces the factory airbox and intake tube on the 2006-2011 Honda Civic 1.8L (R18 SOHC i-VTEC) with an aluminum pipe, a heat shield, and a washable cone filter. It is aimed at owners who want a first bolt-on intake upgrade, a reusable filter, and a more noticeable induction tone at wide-open throttle.
✓ For you if...
- You drive a 2006, 2007, 2008, 2009, 2010, or 2011 Honda Civic with the 1.8L four-cylinder engine.
- You want one of the most affordable bolt-on breathing upgrades that keeps the factory sensor and mounting points.
- You would rather clean and re-oil a cone filter than buy disposable air filters.
- You want a deeper intake tone under acceleration without changing the exhaust.
✗ Not for you if...
- You own a Civic Si with the 2.0L engine or a Civic Hybrid, which use different intake layouts.
- You need a factory-style replacement air filter or intake hose rather than a performance intake kit.
- You expect a guaranteed MPG gain from an intake alone.
- You regularly ford deep water and are unwilling to check the filter position and splash protection.
Looking at other Hondas? Browse the full range of Flashark cold air intake kits.
Check Before Ordering
- Confirm your engine: this kit fits the 2006-2011 Honda Civic with the naturally aspirated 1.8L four-cylinder. The 2.0L Civic Si, the Civic Hybrid, and cars with an engine swap use a different intake layout, so message us with your VIN if your Civic is not covered here.
- Confirm the intake type: this is a heat-shielded cold air intake with an open cone filter mounted inside the engine bay. It replaces the factory airbox and intake tube and supplies its own pipe, couplers, hose, and hardware.
- Plan your filter service: the cone filter is washable and reusable. Inspect it when the pleats begin to load with dirt, service it more often on dusty roads or around construction sites, and let it dry completely before it goes back on.
- Sensor and connections: the kit is built around your Civic's factory air-intake sensor and factory connections, and it does not include a replacement sensor, adapter, or spacer.
- Check your emissions rules: this intake carries no CARB Executive Order number, so it is not legal for sale or use in California and other CARB-adopting states. Read the Compliance Notice below before you order.
- Plan the install and water exposure: expect to spend under 60 minutes with common hand tools, keep the heat shield and factory splash protection fitted, and avoid deep water crossings because water drawn into the engine can cause hydrolock.
Comparing intake styles before you buy? Read the guide to a cold air intake vs short ram intake for the Honda Civic.
What's in the Box
Everything in the box is shown below, and nothing else is needed to mount the kit to your Civic.
- 1 x intake pipe kit (aluminum intake pipe)
- 1 x set of couplers, clamps, hose, and mounting hardware
- 1 x cone air filter (washable and reusable)
Prefer a different Honda? See Honda Cold Air Intake Kits and Honda Civic Cold Air Intake Kits.
Shipping & Returns
Free U.S. Shipping: Orders are typically processed within 1-2 business days and delivered within 7-9 business days. Additional charges may apply to remote areas.
30-Day Returns: Unopened and unused items in their original packaging may be returned within 30 days of receipt. Return shipping is covered for verified quality issues.
Worry-Free Delivery: Optional protection against eligible loss, theft, delay, or transit damage is available at checkout.
