Mitsubishi 4G63 Performance Parts

Get more out of your Mitsubishi 4G63 with Supertech components engineered for strength, consistency and high-RPM reliability. The catalog for this engine covers titanium and stainless engine valves, dual and beehive valve springs, retainers, valve guides, seals and spring seat locators - everything the cylinder head needs to stay stable under load. These components are made for high-RPM street and track engines, including boosted and forced-induction setups that push well past stock limits. Pick a category above to shop valvetrain and piston upgrades for the Mitsubishi 4G63.