Brand: Summit Racing Manufacturer's Part Number: SUM-239104 Part Type: Air Filter Assembly Spacers Product Line: Summit Racing? Air Cleaner Spacers Summit Racing Part Number: SUM-239104 UPC: 190861265202 Fits Carburetor Neck Diameter: 5 1/8 in. Air Cleaner Spacer Height (in.): 1.00 Air Cleaner Spacer Material: Billet aluminum Air Cleaner Spacer Color: Natural Quantity: Sold individually. Notes: If used as designed， with the rubber O-ring toward the air cleaner， this will provide 1.000 in. of rise. On some applications it can also be installed with the O-ring toward the carburetor， but choke linkage interference may occur. If installed in this manner， the air cleaner will seat into the spacer and yield 0.750 in. of rise. Summit Racing? Air Cleaner Spacers These Summit Racing? air cleaner spacers are designed to fit between your carburetor neck flange and the air filter assembly. They come in different heights to allow the amount of clearance you need for your application.