Specialty Air Filters - Designed to Increase Horsepower and Acceleration

These replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. The filters are washable and reusable and are custom designed to fit all Pontiac Tri-powers systems with a 5.50" OD base. Please note there is NO OIL required for these air filters. Sold as a set of 3 filters. Performance of an oiled style filter with the look of a stock paper filter. Increased air flow due to reduced thickness of filter element with excellent filtration. Specific Fitment : Outside diameter 5-1/2'". Inside diameter 4-1/2'". Thickness of filter element is 1/2". Height of filter 1-7/8". Standard stock paper filter : Outside diameter 5-1/2" Inside diameter 4" Thickness of filter element 3/4". Height of filter 2-1/4" Made in USA