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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 38(1.5")mm which steps up to 51mm (2").
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!