M752603187004 Carburetor to manifold spacer block o-ring

If you are running a vintage Tillotson carburetor, you know that air leaks at the manifold can cause all sorts of tuning headaches. This Athena o-ring is designed specifically for the carburetor to manifold spacer block mount on Tillotson-equipped Harleys. It serves as a direct replacement for OEM reference 11107. These seals are vital for maintaining a proper vacuum and ensuring your fuel mixture stays consistent. This o-ring fits 1966 to early 1971 FL models and XL Sportsters that came factory-equipped with the Tillotson carburetor. Usually, two of these are used in the assembly. Replacing these during a carb rebuild is a smart move to keep your early Shovelhead or Ironhead Sportster idling smoothly and performing as it should.