K&N 57A-6038

Intake Kits > Performance Intake Kit
List Price: $520.82
Your Price: USD $286.99

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K&N Apollo Cold Air Induction Systems incorporate a washable/reusable K&N High-Flow Air Filter within a protective shell. They come with custom mounting hardware to fit specific vehicle applications. The Apollo's shell reduces heat build-up and feeds cool air into your engine, resulting in improved volumetric efficiency and increased power gains. Apollo Cold Air Induction Systems allow for updating your vehicle's intake system while retaining a closed environment.
  • Outer shell keeps engine heat out
  • Fresh air inlet
  • Washable reusable air filter
  • Outstanding air filtration

Product Specifications

Air Filter ColorRed
Air Filter Height4.875 in (124 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeNot Flanged
California RestrictedNot legal for sale or use in California
Clamp MaterialSteel
Clamp StyleRegular
Clamps Included5
Couplers Included2
Product Box Height10 in (254 mm)
Product Box Length10 in (254 mm)
Product Box Width10 in (254 mm)
Product Style57i Series International Kits
Replacement FilterRC-5052
Street Legal In All US States No
TUV Approved (Europe)No
TypeGen I
Weight3.4 lb (1.5 kg)

Customer Feedback

Be the first to review part 57A-6038
Great to read all the testimonials, and I'd have to say that having used K&N filters all my days - I would agree with all the praise!

Now a bit older and owner of a Lotus 1.8 Elise S, I needed something to make this already special car even more exiting. So fitted the Apollo kit and must say that this is the best induction kit I have used.

The extra sound from the Apollo is only apparent when the gas pedal is almost at the end of it's travel, so there is no kiddy boy-racer sound to be had here!
Extra flexibility is evident throughout the rev-range, and the car pulls much more cleanly to the red line - just what I wanted!

Other kits don't come close when it comes to vehicle application suitability, and it is obvious research and design time/energy has been put into making this great little filter work for my car.

Criticisms would be the slightly cheap plastic which broke from its thread used in the 1/4 breather attachment (goes into the new moulded intake pipe) I fixed this with trusty 'ISOPON P38 easy sand'
Elise owners - DO NOT tighten this to the end of the thread.
The instructions- although detailed, should include removal of the wheel and inner wheel arch lining to access the air-box clips and mounting bolts, and for easy instalment of the new flexi-pipe which sits at the car's side vent.

Thanks K&N and good job once again!

Scotland, United Kingdom
This is for a Lotus Elise and the air box is hard enough to get to. It was difficult to get the box closed once the filter was installed. I think I am going to buy your cold air intake for the car. I use your filters in all my vehicles.

Cole Zimmerman
Phoenix, Arizona
A little tedious to install as the engine bay is tight for space. Ended up buying a couple extra hose clamps for the flex hose,which was a little long. After trimming the hose the air intake was in a good spot. Took the Lotus for a drive.It started and ran fine.The sound is perfect. At part throttle, it is as quiet as stock.When you open the throttle it sounds fantastic! Exactly what I wanted. My sons drive the car and they wanted more noise.They were so excited and happy with it.They thought we should get an exhaust, but I knew that would have been a real hassle. Love your filters. I've used them in all my vehicles for years.This is my first intake and now I'm tempted to get one for our Honda Civic.

Cole Zimmerman
Phoenix, Arizona