Chimera Engineering silicone couplers! Perfect and durable replacement over the rubber couplers, which usually cracks and causes an air leak. The Chimera coupler inside diameter is 30mm which steps up to 38mm (1.5"), which will fit over anything that has a 29-34mm O.D. up to 38-40mm (1.5")OD; such as aluminum GY6 intake manifolds, Honda GET 49cc engines with aftermarket carbs, custom water plumbing systems, and much more! Will also work other applications as well!

Chimera Engineering silicone intake couplers is the perfect upgrade and replacement over the OEM rubber couplers. Over time, the rubber will harden, get brittle, and it'll eventually crack. The Chimera silicone intake coupler also fits a lot better than the OEM rubber coupler with aftermarket carburetors, which better secure the carburetor to the manifold!

Specs:

• Inside Diameter: 30mm (1-3/16") Stepped to 38mm (1-1/2")
• Will work with anything with OD between 29-34mm and 37-40mm.
• Hose clamps are not included, (Recommend 21mm - 44mm, see related items below)