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Part:   21-821DS

AEM 21-821DS Cold Air Intake

AEM Cold Air Intake System
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   5.0
  • Increase Horsepower
  • Tuned and dyno-tested to improve acceleration and engine sound
  • Rotomolded Plastic Air Intake 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

The AEM 21-821DS fits some Nissan 370Z models. See vehicle applications for details.
The 21-821DS Performance Cold Air Intake System produces horsepower and torque gains by replacing the restrictive air filter and air intake housing. This air intake system was designed, tuned and dyno-tested to fit specific Nissan 370Z models. This system replaces both the left and right side intakes. The AEM Dryflow synthetic washable air filter does not require oiling and can be used up to 100,000 miles before servicing is needed (depending on driving conditions). The heatshield is a two piece design and also utilizes the factory air ducting. The intake tube is constructed from mandrel bent aluminum and has a durable gray powder coat finish. This air intake system was developed to accommodate the mass air flow sensor and PCV hose. 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 21-821DS vehicle applications to determine the legal status for each vehicle.

[More Information on AEM Cold Air Intake Systems]
Specifications AEM 21-821DS Product Specifications
Estimated Horsepower Gain15 HP @ 7100 RPM
Replacement Filter21-202DOSK
Air Filter ColorRed
Air Filter MaterialNon-woven Synthetic
Air Filter Outlet ShapeRound
Clamps Included6
Clamp MaterialStainless Steel
Clamp StyleRegular
Couplers IncludedNone
Product StyleAEM Cold Air Intake System
Intake Pipe Color / FinishBlack
Intake Pipe MaterialHigh-Density Polyethylene
Street Legal In All US States No
TUV Approved (Europe)No
Weight13.8 lb (6.3 kg)
Product Box Height15 in (381 mm)
Product Box Length22.2 in (564 mm)
Product Box Width14.5 in (368 mm)
California RestrictedNot legal for sale or use in California
Mounting Hardware IncludedYes

Horsepower gains based on similar vehicle dynamometer test. Results will vary.
Reviews Product Reviews

Wayne St Pierre from Duncanville, Texas
August 31, 2017 - Part 21-821DS
Great product. Sounds good and looks great. I havent dyno'd yet but plan too when I get a tune. This is the only performance mod I have made and there is noticeable power gains. Thanks AEM.