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The Turbosmart Gen4 IWG and WG38/40/45/50L spring replacement kit provides OEM-fit replacement springs for compatible internal and external wastegates. Use it to restore accurate boost calibration and consistent valve response after wear or modification, keeping boost control predictable and simplifying maintenance of Gen4 and WG-series wastegate assemblies.
Turbosmart Gen4 IWG & WG38/40/45/50L Spring Replacement Kit
