This gasket has a screen that prevents harmful debris from falling into your precious supercharger. Fits all Bug or Bird Catcher injectors as well as carb. adpt. with the standard 12.00" X 3.750"opening. Fits 6-71 thru 18-71 with 13.250" on center bolt pattern.
Gasket is .125" thick and is two gaskets sandwiched together instead of screen stapled to a single gasket like other gaskets.