The Garrett GT55 turbine housing kit supplies an overhoused turbine housing specified as O/V 1.12 A/R for GT55 turbochargers. Offered as a direct replacement, it provides the GT55 O/V 1.12 A/R turbine housing for installations that require that specific A/R on GT55-series turbos, enabling the housing change while retaining the rest of the turbo assembly.
Garrett GT55 Turbine Housing Kit O/V 1.12 A/R