K&N’s lifetime 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 custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. Simply remove the disposable air filter and replace it with a K&N; there is NEVER any cutting or fitting required. 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.

Product Specifications

Product Style: Round Panel Air Filter
Base Outside Diameter: 11.5 in (292 mm)
Height: 1.37 in (35 mm)
Base Inside Diameter: 6.5 in (165 mm)
Filter Re-Oiling Amount: 0.63 oz (19 ml)
Inner Wire: No
Top Inside Diameter: 4.75 in (121 mm)
Top Material/Finish: None
Top Outside Diameter: 7.25 in (184 mm)
Top Style: Open

Applications: 

MAZDA 323 1.3L L4 - B3 Eng. 1989-91
MAZDA 323 SE 1.6L L4 - All 1990-91