K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for virtually every vehicle on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace it with a K&N. See applicable instruction sheet for details. Our stock replacement air filters for street vehicles are covered by our famous K&N Million-Mile Limited Warranty and will be THE LAST AIR FILTER YOUR VEHICLE WILL EVER NEED.

Part KN33-2004 Product Specifications
Product Style: Panel Air Filter
Height: 1.688 in (43 mm)
Outside Length: 15.75 in (400 mm)
Outside Width: 7 in (178 mm)
Filter Material: Cotton Gauze
Filter Re-Oiling Amount: 2.12 oz (63 ml)
Inner Wire: No
Top Style: Open

Filter Cross Reference
PORSCHE 91111018502

1983 PORSCHE 911 3.0L H6 F/I - All
1982 PORSCHE 911 3.0L H6 F/I - All
1981 PORSCHE 911 3.0L H6 F/I - All
1980 PORSCHE 911 3.0L H6 F/I - Non-US, Exc., 180BHP
1980 PORSCHE 911 3.0L H6 F/I - All
1979 PORSCHE 911 3.0L H6 F/I - US
1979 PORSCHE 911 3.0L H6 F/I - Non-US, Exc., 180BHP
1978 PORSCHE 911 3.0L H6 F/I - US
1978 PORSCHE 911 3.0L H6 F/I - Non-US, Exc., 180BHP
1977 PORSCHE 911 3.0L H6 F/I - US
1977 PORSCHE 911 3.0L H6 F/I - Non-US, Exc., 180BHP
1977 PORSCHE 911 2.7L H6 F/I - All
1976 PORSCHE 911 3.0L H6 F/I - All
1976 PORSCHE 911 2.7L H6 F/I - All
1975 PORSCHE 911 3.0L H6 F/I - All
1975 PORSCHE 911 2.7L H6 F/I - All
1974 PORSCHE 911 3.0L H6 F/I - All
1974 PORSCHE 911 2.7L H6 F/I - All