No hassle
returns
Live in-stock
inventory
Save over
60% retail
You have no items in your shopping cart.
October Sale: $375.99
Free Shipping
Part number: 21-688P
Call For Availability: 800-299-1028
Product Details
AEM 21-688P Cold Air Intake System
Products specifications
Color Polished
Filter Color Red
Filter End Cap Finish Black
Notes Includes windshield washer reservoir.
Quantity Sold as a kit.
Sleeve Color Black
Tube Color Polished
Tube Material Aluminum
California Restricted Not legal for sale or use in California
Clamp Material Steel
Clamp Style Regular
HP Increase 13 HP
Intake Pipe Color / Finish Polished
RPM 5800
Clamps Included 7
Estimated HorsePower Gain 13 HP @ 5800 RPM
Product Style AEM Cold Air Intake System
Replacement Filter 21-2057DK
Air Filter Color Red
Air Filter Height 7 in (178 mm)
Air Filter Large End Diameter 5.75 in (146 mm)
Air Filter Material Non-woven Synthetic
Air Filter Outlet Shape Round
Couplers Included 0
Intake Pipe Ports All intake tube ports needed for the specified applications are included
Mass Air Flow Sensor Adapter Included Mass Air Flow Sensor Adapter Included When Required
Vacuum Tubing Included No
Weight 8.1 lb (3.7 kg)
Case Length 22.2000
Case Height 14.93
Case Weight 8.1000
Case Width 14.5000

AEM Cold Air Antake system relocates the filter outside of the engine compartment to deliver cool air inlet temperatures. Cooler air carries more oxygen, which translates into a more intense explosion in the combustion chamber to create more horsepower and torque. But that's only part of the power equation. Tuning the inlet pipe in length and diameter to match the engine's resonance helps move more air to the cylinders, and this tuning allows to deliver large power gains.

  • delivers large power gains
  • provides more air to cylinders
  • creates more horsepower and torque
  • more oxygen for better combustion
  • delivers cool air inlet temperatures

AEM Cold Air Intake System
C.A.S. HYUN GENESIS COUPE 3.8L-V6, 10-12
Reviews
Add your review
J
Out of all the websites I've used to find my item, this was the lowest cost, and I'm so happy that I found them!  Keep up the great work guys!
D
good price
H
Ordered on a Thursday evening and received my parts on Tuesday. Very quick but the website couldn't provide proper tracking info.
P
Had the product I wanted and at the lowest price. Thank you for the outstanding service!

-M
Show All Reviews
Fitment
Hyundai Genesis Coupe
2012 Hyundai Genesis Coupe 3.8 R-Spec / ALL
2011 Hyundai Genesis Coupe 3.8 R-Spec / ALL
2010 Hyundai Genesis Coupe 3.8 / 3.8 Grand Touring / 3.8 GT / 3.8 Track / ALL
Return Policy
Returns are easy at THMotorsports
Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy