Recognizing the need for improvement in the EA888.3 engine and enhancing the cylinder head with four intake ports through advanced flow dynamics, we deemed it necessary to provide a solution for all of you planning this upgrade. We designed and manufactured a stainless steel adapter plate using our CNC machines, featuring larger exhaust ports that transition from a square shape on the head side to an oval shape. This design facilitates the construction of an exhaust manifold while maximizing the internal diameter to achieve the highest possible performance gain from the head’s flow optimization. At the same time, this adapter can also be used with a factory cylinder head without flow modifications. The kit includes a stainless steel triple-layer gasket with internal preload for optimal and long-lasting sealing, preventing exhaust gas leaks. Additionally, it comes with angled spacers and heat-resistant nuts to ensure proper alignment and secure fastening without failures.