Audi A4 Air Filter

K&N HIGH FLOW DIRECT FIT AIR FILTER, RED, SOLD INDIVIDUALLY -- 50-state legal; Provides 1 to 4 h.p. power gain; 96 to 99 percent filtration efficiency; 0.75 in. height, 9.875 in. outside length, 8.25 in. outside width; Oiled element; Panel style; Made of ...

K&N HIGH FLOW DIRECT FIT AIR FILTER, RED, SOLD INDIVIDUALLY -- 50-state legal; Provides 1 to 4 h.p. power gain; 96 to 99 percent filtration efficiency; 1.125 in. height, 10.313 in. outside length, 8.25 in. outside width; Oiled element; Panel style; Made o...

K&N HIGH FLOW AIR FILTER, ROUND TAPERED -- OD 4.688', Flange ID 2.75', Flange Length 0.813', A High Performance Washable And Reusable Filter That Lasts Longer, Made With Ultra-Strong Molded Pliable Rubber Flanges Which Absorbs Vibration, Allows Secure Att...

K&N AIR FILTER -- 50-state legal; Provides 1 to 4 h.p. power gain; 96 to 99 percent filtration efficiency; 6.063 in. height, 6 in. base outside diameter, 3.625 in. flange inside diameter, 0.625 in. flange length; Multiple interwoven layers of surgical cot...

K&N HIGH FLOW DIRECT FIT AIR FILTER -- 50-state legal; Provides 1 to 4 h.p. power gain; 96 to 99 percent filtration efficiency; 1.563 in. height, 12.625 in. outside length, 5 in. outside width; Multiple interwoven layers of surgical cotton gauze; Oiled el...

CABIN AIR FILTER -- A High Quality, Direct Fit OE Replacement For Cabin Air Filter...

CABIN AIR FILTER -- A high quality, direct fit OE replacement cabin air filter....

Activated Charcoal...

Particulate Filter...

Particulate Filter...

FRAM EXTRA LIFE AIR FILTER, FLEXIBLE PANEL -- 2.19" Height, 8.39" Width, 9.88" Length, Protects The Engine And Provides More Airflow For Improved Performance, Helps Prevent Damaging Particles From Entering The Engine And Causing Increased Engine Wear, Las...

FRAM EXTRA LIFE AIR FILTER, FLEXIBLE PANEL -- 2.77" Height, 8.36" Width, 10.48" Length, Protects The Engine And Provides More Airflow For Improved Performance, Helps Prevent Damaging Particles From Entering The Engine And Causing Increased Engine Wear, La...

FRAM EXTRA LIFE AIR FILTER, FLEXIBLE PANEL -- 2.19" Height, 8.39" Width, 9.88" Length, Protects The Engine And Provides More Airflow For Improved Performance, Helps Prevent Damaging Particles From Entering The Engine And Causing Increased Engine Wear, Las...

FRAM EXTRA LIFE AIR FILTER, FLEXIBLE PANEL -- 2.77" Height, 8.36" Width, 10.48" Length, Protects The Engine And Provides More Airflow For Improved Performance, Helps Prevent Damaging Particles From Entering The Engine And Causing Increased Engine Wear, La...