Garrett GT28R THWA Kit O/V T25 / 5-Bolt 0.64 A/R (Ni-Resist)

The Ni-Resist material used in this Garrett GT28R turbine housing is key to its performance and longevity. Ni-Resist is a type of cast iron that offers better resistance to heat and corrosion than standard cast iron, which is crucial for the high-temperature environment inside a turbocharger. This specific housing features a T25 inlet flange and a 5-bolt exhaust outlet, making it a popular choice for many custom turbo setups and upgrades.

With an A/R ratio of 0.64, this housing is designed to balance quick turbo spool-up with the ability to support higher engine speeds. The 'O/V' designation indicates it's an open-volute design, which can help improve exhaust gas flow compared to a divided volute housing. This makes it a solid option for builders looking for improved throttle response and a broader powerband on their forced induction build.

Keep in mind that this part is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation guide for proper fitment and setup procedures for your specific application.