K&N Round Tapered Universal Air Filter K&N's Universal Air Filters are designed and manufactured for a wide variety of applications. All filters are constructed with ultra-strong molded pliable rubber flanges which absorb vibration and allow for secure attachment and can also be stretched for up to 1/16 of an inch (1.5mm) to fit in-between sizes. K&N universal air filters are washable and reusable. Features: Clamp-on Washable and reusable Top Style: Metal Top Material/Finish: Chrome Filter Material: Cotton Gauze One-year manufacture's warranty Specs: K&N# Flange Inside Diameter Top Outside Diameter Height Flange Length Base Outside Diameter Rc-0790 1.375 in (35 mm) 2 in (51 mm) 2.25 in (57 mm) 0.625 in (16 mm) 2.5 in (64 mm) Rc-2290 1.563 in (40 mm) 2 in (51 mm) 3 in (76 mm) 0.625 in (16 mm) 2.625 in (67 mm) Rc-2310 1.563 in (40 mm) 2 in (51 mm) 3 in (76 mm) 0.625 in (16 mm) 3 in (76 mm) Rc-2490 1.688 in (43 mm) 2 in (51 mm) 2.375 in (60 mm) 0.625 in (16 mm) 3 in (76 mm) Rc-1070 1.688 in (43 mm) 2 in (51 mm) 2.75 in (70 mm) 0.625 in (16 mm) 3 in (76 mm) Rc-1090 1.875 in (48 mm) 2 in (51 mm) 3 in (76 mm) 0.625 in (16 mm) 3 in (76 mm) Rc-1290 1.875 in (48 mm) 2 in (51 mm) 3 11/16 (94 mm) 3 in (76 mm) Rc-2500 1.938 in (49 mm) 2 in (51 mm) 2.5 in (64 mm) 0.625 in (16 mm) 3 in (76 mm) Rc-1200 2.063 in (52 mm) 2 in (51 mm) 4 in (102 mm) 0.625 in (16 mm) 3.5 in (89 mm) Rc-2330 2.125 in (54 mm) 2 in (51 mm) 3 in (76 mm) 0.625 in (16 mm) 3 in (76 mm) Rc-2340 2.125 in (54 mm) 2 in (51 mm) 2.75 in (70 mm) 0.625 in (16 mm) 3 in (76 mm) Rc-1920 2.125 in (54 mm) 2 in (51 mm) 4 in (102 mm) 0.625 in (16 mm) 3.5 in (89 mm)