K&N RE-1040: RE-1040 Oval Tapered Universal Clamp-On Air Filter Flange Diameter: 4 in (102 mm)
Features
Developed to increase horsepower and torque through improved airflow and filtration
Flexible flange can be stretched up to 0.063 in (1.5 mm) to fit odd sizes
Cotton gauze construction
Washable filter
Centered flange
Universal application