Garrett GT28R THWA O/V T25 / 5-Bolt 0.86 A/R (Hi Sil)

Replacement exhaust / turbine housing for the Garrett GT28RS, GT2871R, GT2876R & GTX Turbos. This is a T25/T28 inlet (exhaust manifold side) with built in internal wastegate (T25 / T28 with 5 bolt downpipe side). Direct bolt on & replaces / upgrades your existing housing. Your choice Of A/R. Installing & replacing your turbine housing is very simple. Once the turbo is removed from the car, the new housing is installed by simply removing the (6) 1/2\" mounting bolts holding the turbine housing to the center cartridge. The old housing then slips right off & the new housing goes back on in the reverse order. Some applications do not require that the whole turbo even be removed from the car depending on available space & leverage. This is a 1 out of 10 in difficulty. Turbine housings are often changed or replaced for various reasons such as: - To allow the turbo to be used with a new application, exhaust manifold or downpipe. - To obtain a more desirable A/R size for your application.