The AEM 22-688C Performance Air Intake System is a free-flowing, mandrel-bent aluminum tube air induction system designed to replace the restrictive factory air filter and air intake tubing while retaining the factory air box on some Lexus IS 250, IS 350 and RC 350 models. The air intake system comes with a replacement AEM high-flow air filter and a free-flowing aluminum intake tube that easily connects to your vehicle's factory air box and engine throttle body to dramatically increase air flow into your engine. With more air flowing through the custom-tuned intake tube, you experience more horsepower and acceleration throughout the engine's RPM range. The air intake tube accomodates a breather hose and is finished with an attractive and durable gunmetal gray powder-coating that provides a clean, high-performance look under the hood. The AEM Dryflow air filter is made from an oil-free, synthetic filter media that can be used for up to 100,000 miles before servicing is needed (depending on driving conditions). This air intake is designed for easy installation and simply requires one screwdriver and a ratchet set to do the job. The air intake system comes with 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 22-688C vehicle applications to determine the legal status for each vehicle.
An inexpensive and easy horsepower upgrade
Designed to improve throttle response and engine sound
Low restriction aluminum intake tube
Simplistic installation requires little mechanical experience
Lasts up to 100,000 miles before service is required (depending on driving conditions)
Replaces stock air filter and intake tube while retaining the factory air box
Washable and reusable lifetime air filter
AEM Lifetime Limited Warranty
Estimated Horsepower Gain
5 HP @ 6500 RPM
Air Filter Color
Air Filter Material
Air Filter Outlet Shape
AEM Cold Air Intake System
Air Filter Height
2.25 in (57 mm)
Intake Pipe Color / Finish
Intake Pipe Material
CARB EO Number
Street Legal In All US States
See Vehicle Applications
TUV Approved (Europe)
5.8 lb (2.6 kg)
Product Box Height
8.5 in (216 mm)
Product Box Length
18.25 in (464 mm)
Product Box Width
14.5 in (368 mm)
Mounting Hardware Included
No cross references found for this part
Wrench, Extension, Flat Blade Screwdriver, Allen Wrench
Custom-engineered tubes deliver better airflow than you get with a stock intake. More air means better performance.
Using cotton gauze instead of typical folded paper, our filters increase airflow while providing excellent engine protection.
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