UFO Stack 4412XP (base not included )

Our most extraterrestrial velocity stack version to date. The UFO stack allows you to have all the benefits of our original stack, without the use of a top filter! And no more rivet holes! Simply run a thin bead of silicone around the bottom side of the stack and press it into your air cleaner base. Once it sets, you’re ready to go! The centers of the stack are also removable, so if you have multiple cars, you will be able to interchange center sections to fit each carburetor type. From 4 to 2 barrel and back again with ease! 

Sizes: there are 2 different UFO sizes. Please measure the ID of your air filter to determine which stack you will need. For example: 

Walker Filter (WLK3000204) - 12 1/8 

Wix Paper (WIX46944R)- 11 7/16 

Recommended Air Cleaner Base- Hammond Base 

Important: please allow 1-3 business days for shipping on this item.