– With zinc plated steel front & back plate – Dimensions approx. 187mm x 152mm x 43mm high – OEM replacement reference 29259-91A; 29259-92 and 29330-96 filter element. K&N is the world-wide standard in high-end quality performance air filtering systems. They are washable and can be used as stock replacement. The filter elements are designed with a ribbed surface that will give you up to 5 times more filter area than a regular replacement filter; dramatically increasing airflow. The K&N filter elements have a steel body with cotton between the screens. K&N filters decrease service intervals; are better flame resistant and will last much longer than comparable foam or paper type filters.