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Air Filter..stock vs Z71 vs K&N

opsbear7

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opsbear7 Enthusiast

opsbear7

Posted
Posted

I have a 2003 Silverado 5.3L V8....Its also got the Z71. I know the Z71 comes with a "high occupancy air filter" that is supposivly better than the other stock one. Heres my qestion how much different is it going from

 

Stock Air Filter vs. Z71 Air Filter vs. K&N Air filter....

 

Thanks guys!!

asilverblazer Senior Enthusiast

asilverblazer

Posted
Posted

I want to go back to the factory air filter. (high capacity Z-71 style) Currently I am using an open element similar to K&N and have not seen any increases in performance or mileage. Thus I want to use a better filtering air filter :cheers: such as the original AC Delco filter, which are a very good filter.

Jeff1 Enthusiast

Jeff1

Posted
Posted

I'm with asilver, completely. I had the fipk on my prev. truck and as far as I can tell the ony thing added was the noise. If it added mileage or power, I could'nt tell it. I too question the filtering ability. I did'nt realize the z71 filter was any different from the others. It appears to be in the same sized enclosure. Is the filter thicker or something?

opsbear7 Enthusiast

opsbear7

Posted
  • Author
Posted
I'm with asilver, completely.  I had the fipk on my prev. truck and as far as I can tell the ony thing added was the noise.  If it added mileage or power, I could'nt tell it.  I too question the filtering ability.  I did'nt realize the z71 filter was any different from the others.  It appears to be in the same sized enclosure.  Is the filter thicker or something?

 

 

 

 

 

Heres what i was told by my dealership....Included in the Z71 Package is a "special" high occupancy Air Filter that was different than the stock (without Z71) Thats my knowledge

Tucson_02Silverado Senior Enthusiast

Tucson_02Silverado

Posted
Posted

Two types of air filter boxes/filters.

 

1. Standard

2. High Capacity (Filter is about 4" thick)

 

High Capacity is an option. The option is usually mandatory with the Z82 trailing package. I do not recall it being a mandatory with Z71.

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