Parts Catalog Accessories Catalog Tech Info Tech Forums
 
  Search our site:    
View Recent Cars  |   Cart  | Project List | Order Status | Help    
Click here to view Part Diagrams
Get FREE Ground Shipping with the purchase of $75 in qualifying parts!
 

Bookmark and Share

 


Pelican Technical Article:
Replacing Your Porsche Carrera Air Filter (996/997)
 
Time: 30 minutes
Tab: $40
Talent:  
Tools:
Phillips and flat head screw driver, 13mm socket, Torx set
Applicable Models:
Porsche 996 Carrera (1998-2005)
Porsche 997 Carrera (2005-2008)
Parts Required:
Air filter, cabin pollen filter
Hot Tip:
Replace both air filter and pollen filter together
Performance Gain:
Better airflow into your fuel injection system
Complementary Modification:
Install cone filter or cold air intake
 
   

   

Check out some other projects in this series: 

Need to buy parts for this project?
Click here to order parts for your Porsche 996 Carrera (1998-2004)
or parts for your Porsche 997 Carrera (2005-2008)
   
     You should change the air filter in your Carrera every 10,000 miles or so. The air filter protects the fuel injection system and the air intake system from dust and debris that can be sucked in under normal operation.

     On the Carreras, the filter is just inside the air cleaner sitting in the engine compartment.

     To access the 996 Carreras filter, simply release the 7 large Phillips head screws that hold the top of the cleaner to the bottom part of the housing, release the intake boot connection to the throttle body, unplug the MAF sensor and remove the oil filler tube from the housing. Take a look inside the filter housing—there are usually some leaves or dirt that found their way in there. Clean the housing out before installing the new filter.

     To access the 997 Carreras air filter you must remove the complete airbox housing from the car, as the Torx screws that hold the top of the housing on are secured from the bottom of the housing. Loosen the clamp holding the intake to the throttle body, remove the mass sensor and its harness, if you have a 3.8 you will need to disconnect the wire from the vacuum resonator, free the oil fill tube from its clip and gently lift the complete housing from the car. The oil fill tube can break, so be careful when removing the airbox. Once the housing is out of the car remove the retaining screws from the bottom. Make sure to clean the inside of the housing before installing a new filter.

     For the Carrera there are basically two different types of air filters—the stock paper or cloth air filters and aftermarket units. These aftermarket units utilize an oil-soaked fabric to achieve freer airflow. The bottleneck for airflow in the 911 Carrera engine is not necessarily the air filter. The primary advantage of the aftermarket units is that you usually only have to purchase one, and it will last the life of your car. No matter what your friends tell you, these aftermarket filters will not add any significant horsepower to your engine. Many tests on a dynamometer have revealed that the freer-flow air filters do not suddenly “create” horsepower out of thin air. If you install one of these filters into your car and “swear” there’s more horsepower, then have a friend do a blind test for you. Have him switch the filters in and out at random and see if you can tell the difference. This is what is commonly called the placebo effect—perceiving significant gains in performance just because you added a “performance part.”

     The downside to using these aftermarket filters is that they often do not filter as well as the factory units. In addition, the use of aftermarket filters may cause excess dirt to accumulate in the mass airflow sensor and lead to its premature failure. The bottom line is that you need to carefully research any aftermarket filter before you install it into your car and carefully clean and maintain it thereafter. I personally prefer to use the stock OEM cloth/paper filters to ensure maximum filtering and protection. Whichever one you choose, make sure that it filters as well as or better than the original Porsche specifications.
The air filter is quite easy to get to on the 996 Carrera.
Figure 1
The air filter is quite easy to get to on the 996 Carrera. From inside the engine compartment loosen the seven screws that hold the top of the air cleaner housing to the bottom (blue arrows). Then loosen the clamp that holds the intake boot to the throttle body (green arrow). Unplug the mass air flow sensor (yellow arrow) and the clips mounting it to the air box (purple arrows) unclip the oil filler tube from its home on the left side of the air cleaner housing. With everything disconnected, simply lift up on the housing to expose the air filter. The red arrow points to the bolt that holds the lower section of the air box to the chassis and does not need to be removed to change the air filter.
Large Image | Extra-Large Image
On the 997 Carreras, you will need to remove the complete airbox assembly to replace the air filter.
Figure 2
On the 997 Carreras, you will need to remove the complete airbox assembly to replace the air filter. The process is similar with the exception that there is a resonator switch installed in the air cleaner housing on the 3.8L engines. In order to remove the air cleaner housing, the cable plug must be disconnected from the electric switch over valve. This photo shows the airbox housing out of the car. The oil filler tube clip (red arrow) mass flow sensor (yellow arrow) and the throttle body clamp have all been removed or loosened. There are 8 Torx screws (blue arrows, three shown) that need to be removed to separate the airbox housings.
Large Image | Extra-Large Image
Shown here is the upper part of the air cleaner housing, with a new filter being inserted.
Figure 3
Shown here is the upper part of the air cleaner housing, with a new filter being inserted. Always wipe out the bottom of the air filter box before putting everything back together.
Large Image | Extra-Large Image
While you’re replacing the engine air filter, I recommend that you also swap out the cabin air filter as well.
Figure 4
While you’re replacing the engine air filter, I recommend that you also swap out the cabin air filter as well. Sometimes known as a “pollen filter,” the cabin filter is located in the front trunk on the right side of the car. Remove the plastic panel just in front of windshield on the right side (upper left) with a T-25 Torx driver. Then reach in and pull out the filter. Install the new filter in place (upper right) and replace the plastic panel.
Large Image | Extra-Large Image
Need to buy parts for this project?
Click here to order parts for your Porsche 996 Carrera (1998-2004)
or parts for your Porsche 997 Carrera (2005-2008)
Bookmark and Share
Comments and Suggestions:
Martin Comments: Replacing the cabin air filter / pollen filter should be easy. However, at first I could not find it. That is because when the steering wheel is on the right as in the UK, where I am, the filter is on the left of the car; not on the right as your article states. Once I had found it, the job was easy.
September 10, 2014
  Followup from the Pelican Staff: Thanks for the additional info and feedback. We appreciate it.
- Nick at Pelican Parts
 
AA717driver Comments: On my 996, when replacing the airbox, I noticed several of the grommets on the backside toward front of the car bottom of tye box were missing.

Do you have a part number for those rather large pieces about the diameter of a half-dollar?

I can get a pic if you need it.

TC
August 29, 2014
  Followup from the Pelican Staff: I don't have the number. Give our parts specialists a call at 1-888-280-7799. They can help you find the right part.
- Nick at Pelican Parts
 
Wally Comments: What're the recommended maintenance parts replacement for my 2007 Carrera Cab? Air filter, spark plugs, belts? Fuel filter? Anything else? Sensors?
June 28, 2014
  Followup from the Pelican Staff: I would add cabin filter and fluids to that list myself. It really depends on the mileage of the vehicle. Give our parts specialists a call at 1-888-280-7799 and they can help figure out which part or repair kit you need.
- Nick at Pelican Parts
 
Wally Comments: I have 2007 Carrera Cab, my air filer box is cracked at the bottom. Where can I get a replacement of this box. Any suggestions?
June 27, 2014
  Followup from the Pelican Staff: Yes, we can get it for you. Give our parts specialists a call at 1-888-280-7799. They can help you find the right part.
- Nick at Pelican Parts
 
Abdo Comments: Thanks Nick. I managed it. Its such a tight quarter. A lot of ties and screws.
Some people exaggerate the need to replace.
I took out the original air filter after about 16,000 miles since new and it was OK but I still changed it- it really did not need it.
I also took out a plug to see condition. It was like new so why do they tell you to change them at 10,000 miles?
all the best
February 7, 2014
  Followup from the Pelican Staff: Thanks for the follow up. We appreciate it.
- Nick at Pelican Parts
 
abdo Comments: about a month ago I tried to do this and gave up as that sensor connection would not unplug-do I need king kong fingers?
I will try again as the guys at the dealership will not be more refined than king kong.
February 2, 2014
  Followup from the Pelican Staff: NO, you should be able to unclip it with normal fingers :). Sometime I find it helps if I push the connector toward the sensor while I press the release tab, then pull the connector off. - Nick at Pelican Parts  
bigdog1967 Comments: thank you nick.accurate info
January 26, 2014
  Followup from the Pelican Staff: Thanks for the feedback. Glad we could help.
- Nick at Pelican Parts
 
stephen Comments: i am going to replace air filter and pollen filter on my 2007 Carrera.
What torx set or sizes should I buy?
December 20, 2013
  Followup from the Pelican Staff: This set will do what youn eed.

http://www.pelicanparts.com/catalog/shopcart/TOOL/POR_TOOL_WTD166_pg63.htm - Nick at Pelican Parts
 
Airman Comments: will i need to purchase a torx set to change the air filter?
December 5, 2013
  Followup from the Pelican Staff: Torx drivers and sockets are essential if you're going to be doing your own work on the vehicle. - Nick at Pelican Parts  
genesees4 Comments: To unplug maas air flow sensor:

I found there is a slot on the back side to insert a flat head screw driver. Of course this is out of sight. Insert the screw driver into the slot and pull handle towards you and it should release.
November 30, 2013
  Followup from the Pelican Staff: Thanks for the additional info. We appreciate it. - Nick at Pelican Parts  
Warren Comments: Thanks for the response, but I am still unable to get the plug to release - don't think it is a silicone problem - everything looks very clean and this car only has 8000 miles on it. Guess I will take it to the dealer unless you have any other suggestions.
November 17, 2013
  Followup from the Pelican Staff: If you cannot get it to release by pressing the locking tabs and pulling it off, I am all out of ideas. - Nick at Pelican Parts  
warren Comments: Still can seem to get the mass air flow sensor off
November 15, 2013
  Followup from the Pelican Staff: Really shouldn't be that difficult. maybe someone used silicone to glue the connector on. - Nick at Pelican Parts  
genesees4 Comments: How the f do you unplug the maas air flow sensor?
November 9, 2013
  Followup from the Pelican Staff: There are two tabs on the side of the connector. Squeeze them both at the same time and pull the electrical connector straight off. - Nick at Pelican Parts  

Check out some other sample projects from the book: 

 

Got more questions?  Join us in our Porsche 996 Carrera and Porsche 997 Carrera Technical Forum Message Board and ask a question to one of our many automotive experts.

Or, see what other questions readers have asked about this article...
  Applies to: Porsche 996 Carrera (1998-2005), Porsche 997 Carrera (2005-2008)
  Search our site:    

View Cart & CheckOut | Project List | Order Status |  Help    

 

[Home] [Customer Service] [Shopping Cart] [Project/Wish List]
  [Privacy Statement]  [Contact Us] [About Us] [Shipping]

Copyright © Pelican Parts Inc. -    DMCA Registered Agent Contact Page