The Garrett GT2871R turbocharger with a 0.64 A/R turbine housing and a low-boost actuator (480009-9) is a forced-induction rotor assembly intended for aftermarket turbo upgrades. As a GT2871R model, it pairs a compact housing with Garrett's compressor and turbine hardware to increase engine airflow for boosted applications where that A/R and actuator combination matches the intended boost level.
Garrett Turbocharger 0.64 A/R (480009-9 Low Boost Act) - GT2871R