HKS Mitsubishi 4B11 Turbine Adapter

This is the HKS Turbine Adapter for the Mitsubishi 4B11 engine, commonly found in the Lancer Evolution X. If you're looking to upgrade or replace the turbocharger on your 4B11, this adapter is a key component that allows you to connect a different turbine housing to your existing exhaust manifold. It's designed to bridge the gap, ensuring a proper seal and alignment for your turbo setup.

HKS is well-known for its performance parts, and this adapter is built with that reputation in mind. It's made from solid cast iron, a material chosen for its ability to withstand the high temperatures and pressures associated with turbocharging. The casting is well-made, with smooth internal passages to help maintain good exhaust flow from the manifold to the turbine wheel. This is important because any restriction or turbulence here can impact how quickly the turbo spools up and how efficiently it performs. The flange surfaces are machined flat to ensure a leak-free seal when bolted to both the manifold and the turbine housing.

When installing this adapter, pay close attention to the torque specifications for both the manifold and the turbine housing bolts. Using the correct torque helps prevent leaks and ensures the adapter stays securely in place under the stress of engine operation. This part is essential if you're deviating from the stock turbo setup and need a reliable way to adapt your chosen turbine to the 4B11 engine. It's a solid option for builders looking for a dependable connection point for their custom turbo projects.