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  • AEM COLD AIR INTAKE SYSTEM For 06-11 Honda Civic Si 2.0L - 21-685C
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AEM 06-09 Civic Si Chrome Cold Air Intake - eliteracefab.com
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AEM COLD AIR INTAKE SYSTEM For 06-11 Honda Civic Si 2.0L - 21-685C

2 sold in last 8 hours
AEM Induction
AEM21-685C
In stock
Cold Air Intakes
$833.53 $502.98
OVERVIEW The AEM 21-685C Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle's restrictive factory air filter and air intake housing. This air intake system...

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AEM COLD AIR INTAKE SYSTEM For 06-11 Honda Civic Si 2.0L - 21-685C
Description
The AEM 21-685C Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle's restrictive factory air filter and air intake housing. This air intake system was designed, tuned and dyno-tested to fit specific Honda Civic SI and Acura ILX models. Air enters the system through an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration and performance. The air filter is relocated to the driver-side wheel well which is designed to reduce intake air temperature and increase horsepower. The intake tubing is constructed from mandrel-bent aluminum featuring a durable gunmetal gray powder coated finish. This air intake system was developed to accommodate the engine's factory emissions control devices including the mass air flow sensor, a couple replacement silicone breather hoses as well as a replacement radiator hose. The tapered cylinder shaped AEM Dryflow air filter is made from an oil-free, synthetic filter media that can be used for up to 100,000 miles before cleaning is needed (depending on driving conditions). The air intake system is backed by AEM's Lifetime Limited Warranty. Some AEM air intakes are not legal for sale or use in California and other states adopting California emission standards, while others are 50 state legal. View the 21-685C vehicle applications to determine the legal status for each vehicle.

  • Increased horsepower
  • Tuned and dyno-tested to improve acceleration and engine sound
  • Low restriction aluminum tubing
  • Air filter lasts up to 100,000 miles before cleaning is required (depending on driving conditions)
  • Washable and reusable oil-free filter media
  • AEM Lifetime Limited Warranty

Installation PDF

Installation Instruction Sheet

Dyno Chart - 2007 HONDA Civic Si 2.0L - 6.27HP Increase


Estimated Horsepower Gain 6.27 HP @ 5100 RPM
Replacement Filter 21-203DK
Air Filter Color Red
Air Filter Material Non-woven Synthetic
Air Filter Outlet Shape Round
Clamps Included 11
Clamp Material Stainless Steel
Clamp Style Mini
Couplers Included None
Product Style AEM Cold Air Intake System
Intake Pipe Color / Finish Gunmetal Gray
Intake Pipe Material Aluminum
CARB EO Number D-670-21
Street Legal In All US States Yes
TUV Approved (Europe) No
Weight 8.2 lb (3.7 kg)
Product Box Height 12.25 in (311 mm)
Product Box Length 20.25 in (514 mm)
Product Box Width 12.25 in (311 mm)
Mounting Hardware Included Yes
Warranty Limited Lifetime

 

Supported Vehicles

2011 Honda Civic Si 2.0L L4 Gas

All Models

Street Legal in All US States: Yes

CARB EO Number:

D-670-21

2010 Honda Civic Si 2.0L L4 Gas

All Models

Street Legal in All US States: Yes

CARB EO Number:

D-670-21

2009 Honda Civic Si 2.0L L4 Gas

All Models

Street Legal in All US States: Yes

CARB EO Number:

D-670-21

2008 Honda Civic Si 2.0L L4 Gas

All Models

Street Legal in All US States: Yes

CARB EO Number:

D-670-21

2007 Honda Civic Si 2.0L L4 Gas

All Models

Street Legal in All US States: Yes

CARB EO Number:

D-670-21

2006 Honda Civic Si 2.0L L4 Gas

All Models

Street Legal in All US States: Yes

CARB EO Number:

D-670-21
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Testimonials

Looks like I get to be the first review for these guys. Let me start out by saying that I have had 3 other cars of a similar caliber to my GTR serviced/worked on and upgrades installed at other shops and none took the pride and level of detail that these guys did. I wish I could see all the welds on the downpipes and exhaust because it looked like artwork. Their fabricator made sure to send me daily updates and pictures which was also a big deal to me. For being an out of state experience it made it seem more like they were local to me and that I had known them for longer.

James Lowe

Took the leap of faith on buying a set of their R35 intakes and downpipes because the price was half of anyone elses plus their car hauls a** at the track. Install went smooth and the power seems to be even better than advertised. Cant wait to get tuned in a few weeks. Their shelf tune honestly has to be 600+ hp as I pulled on a Hellcat last night. I see these guys and gals going a long ways if they can get out there and advertise. Customer service is on point paired with BIGGG savings for the winning combo.

Luca Harris

Bought a Motec and had these guys build the harness and set it up fully. Track car that received the level of attention and detail of a show car while here. Made me feel at home every time I popped in for a visit and always offered to buy me lunch/dinner. I don’t see me shopping anywhere else as they make you feel like your family.

Richard Westbrook

Took the leap of faith on buying a set of their R35 intakes and downpipes because the price was half of anyone elses plus their car hauls a** at the track. Install went smooth and the power seems to be even better than advertised. Cant wait to get tuned in a few weeks. Their shelf tune honestly has to be 600+ hp as I pulled on a Hellcat last night. I see these guys and gals going a long ways if they can get out there and advertise. Customer service is on point paired with BIGGG savings for the winning combo.

Luca Harris

FAQs

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We are open Monday-Friday from 8am-6pm EST

Yes, customers located in and around the the Piedmont area are welcome to pick up their items from our retail location during normal business hours. Our address is:
1514 Holebrook
St Suites D-F
Greensboro, NC 27403

Elite Race Fab offers free ground shipping & handling to our retail customers within the lower 48 contiguous United States on most orders totaling $159.99 and higher! Orders under $159.99 will be subject to a nominal $5 Flat shipping charge. Some exceptions and/or exclusions apply, in those scenarios you will be advised of any additional charges in your shopping cart.
In regards to expedited and international shipping each order will need to be quoted on a case by case basis. You can obtain a quote two ways:
- From your shopping cart select "Request a Quote" prior to placing your order. We will review your proposed order and promptly respond with shipping estimates.
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-Give us a call and we can ensure your item is shipped right then, to ensure you have it in time for your deadline.

We have been committed to offering all of our customers the lowest pricing throughout our website day in and day out. We value your business so much that we go a step further than our competitors. We use a third party software that proactively monitors all our competitor's websites/pricing so that we can make adjustments accordingly if needed to have the lowest prices. Thats right, no need to spend hours searching for the lowest prices, as ours will be the lowest.

As far as price matching, we dont want to write a check we cant cash, but we certainly want to earn your business. With that said, we will go above and beyond to match our competitor's pricing when it is needed. Simply email us, click the live contact button, or give us a call and be sure to have a link to our competitor's site and please factor in any shipping and handling their website will be charging. We will then ensure you get the lowest price, and either match or beat their pricing.

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