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Supertech engineers high-performance parts specifically for the Mitsubishi 4B11 DOHC Turbo, giving builders the durability and headroom to chase serious power. Choose from engine valves, valve spring kits, retainers, block guards, head gaskets, connecting rods and high-compression pistons, all matched to this engine's specifications. These components are made for high-RPM street and track engines, including boosted and forced-induction setups that push well past stock limits. Select a component category above to see the parts that fit your Mitsubishi 4B11 DOHC Turbo build.