This tape mount, stainless steel cover is made for filter doors that are about 10″ long at the longest point. Generally, those doors are found on Peterbilt 379, 386, 388, and 389 trucks 2006 through 2009. Some newer filter doors are longer than that. This cover will still fit, but there may be a portion of the door that isn’t covered up. This is not a full replacement door.