CPT Check Point Tuning CPT-WG-L-G Water Guard Cold Air Ram Intake Cone Pre Filter Cover Silverado HD Large Green Fits: 01-07 Chevrolet Silverado 1500 HD, 01-13 Chevrolet Silverado 2500 HD, 07-13 Chevrolet Silverado 3500 HD, Most affordable cold air and short ram pre-filter on the market Pre-filter mesh works in conjunction with your filters mesh to keep out even more water and debris from getting in, while still allowing for the passage of cold air Prolongs the life of your engine; Easy to install and clean Universal, fits most cone and cylinder shaped filters from 5" to 5.5" wide x 5.75" to 6.25" High