Fits models with OEM round air cleaner housing. Economically priced but high-end quality and offering superior flow; longer service intervals; better flame resistance and will last much longer than comparable foam or paper type filters. Filter elements are constructed with 4 layers of ribbed cotton filtering media. This will maximize air flow but still provide adequate filtering capacity; equalling the best performance filters on the market. Very durable through the use of coated wiring mesh. Washable and ready to give years of trouble-free use.Note: All air cleaners mentioned here are for HDI (HDI=H-D International models; or simply ''outside the USA'' models) unless noted otherwise. OEM replacement reference 29400248