K&N RU-2820: RU-2820 Round Straight Air Filter Flange Dia. (F): 3 in. (76 mm)
3'' (76 mm) Flange Dia. (F)
Round Straight Air Filter Flange Dia. (F): 3'' (76 mm) Outside Dia. (D): 5'' (127 mm) Length (L): 6.5'' (165 mm) Top Style: Rubber Flange Length (FL): 0.625'' (16 mm) Flange Angle (FA): 0º Flange Offset: 0''