AEM Performance Cold Air Intake | 2009-2017 Nissan 370Z 3.7L (21-821DS)

AEM Induction Systems
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Performance Cold Air Intake by AEM Induction

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 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.


  • 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

This AEM intake system is legal for street use in most states. However, it is not legal for sale or street use in California or states that have adopted California Emissions Standards under Section 177 of the Federal Clean Air Act of 1970.


  • 2009 - 2017 Nissan 370Z 3.7L


  • Estimated HP Gain - 15 HP @ 7100 RPM
  • Replacement Filter - 21-202DOSK
  • Air Filter Material - Non-woven Synthetic
  • Air Filter Outlet Shape - Round
  • Clamp Material - Stainless Steel
  • Clamp Style - Regular
  • Intake Pipe Material - HD Polyethylene
  • Weight - 13.8 lb (6.3 kg)

What's In The Box?

  • 2 - AEM Air Intake Tubes
  • 2 - AEM Air Filters (21-202DOSK)
  • 2 - AEM Heat Shields
  • 6 - Stainless Steel Clamps
  • Mounting Hardware



  • AEM Lifetime Limited Warranty

Customer Reviews

Based on 4 reviews
Leonard Peck
AEM Cold Air Intake

MaxPerformance is an awesome company. They answered all my questions. Shipping arrived in three days.
I did not install the product myself. I I had it professionally installed. The throttle response is quicker, the engine sound is better at warm up and acceleration. What I like most, the AC seems to work faster.

Elias Roberts
Sounds good, installing is a pain.

Once it's installed, it's great but the installation process was a headache. The instructions aren't very detailed and making the hose connections is difficult. I had to cut one of the stock ones and ended up not even using the one they provided because it simply wouldn't have worked.

Jason Boyce
Aem cold air intake 370z

Pretty straight forward install,not much room to work with you just have to have patience. Super fast shipping I received my package in 2 days. They sound great and definitely noticed a better throttle response.

Brandon Bowenki
Fragile but workable

Fits very nice into my nissan 370z 2012, but instructions where not very detailed and the imagines where very blurry. I also had an issue with the pcv hose connector piece (90 degree 1/4×5/8) snapping due to it being make of plastic and having a lot of tension on it. Why isnt it made of metal? Customer service was very fast with replacing it for free though, so cudoes to them. Oh also forgot to say sounds amazing, car sounds way healthier. Hope this helps