Garrett G25 Turbine Housing Kit O/V V-Band / V-Band 0.72 A/R - Reverse Rotation

Garrett G25 Turbine Housing | 0.72 A/R V-Band | Reverse Rotation

Upgrade your G25 supercore with the Garrett G25 Turbine Housing Kit. Features 0.72 A/R, Open V-Band inlet/outlet, and Reverse Rotation configuration.

The Garrett G25 Turbine Housing Kit (0.72 A/R, Reverse Rotation) is an ultra-modern, high-flow housing engineered specifically for Garrett G-Series G25-550 and G25-660 reverse-rotation supercores. Designed for fabricators and motorsports enthusiasts building custom twin-turbo setups or specialized single-turbo configurations, this housing features a clean Open V-Band inlet and V-Band outlet for seamless fabrication and maximum seal integrity.

Cast from advanced Ni-Resist high-nickel iron alloys, this housing is built to withstand extreme exhaust gas temperatures (EGTs) up to 1050°C without cracking, warping, or corroding. The 0.72 A/R ratio provides the ideal balance for the G25 platform—delivering rapid spool-up and sharp low-end response while maintaining enough flow capacity to unleash high-RPM power on modern high-output engines.

Product Details:

1. Compatibility: Garrett G-Series G25-550 & G25-660 Reverse Rotation Supercores
2. Rotation: Reverse Rotation (Counter-Clockwise)
3. Area over Radius (A/R): 0.72 A/R
4. Turbine Inlet: V-Band (Open Flow)
5. Turbine Outlet: V-Band
6. Wastegate Style: Free Float (External Wastegate Required)
7. Temperature Rating: Up to 1050°C (1922°F)
8. Material: Ni-Resist High-Nickel Ductile Iron
   

Key Features:

1. Reverse Rotation Architecture: Specifically mirrored for counter-clockwise rotation, making it essential for symmetrical, dual-mirror twin-turbo engine bays.
2. Ni-Resist Heat-Resistant Casting: Formulated with high-nickel alloy contents to prevent thermal distortion and structural cracking under prolonged, severe track use.
3. V-Band Inlet & Outlet Connections: Eliminates restrictive gasket connections, providing a leak-free 360-degree clamp interface that simplifies clocking and installation.
4. Optimized 0.72 A/R Volute: Engineered to provide quick boost response without choking high-end horsepower capacity on 1.6L to 3.0L engine displacements.
5. Aerodynamically Tuned Internal Contour: Designed using computational fluid dynamics (CFD) to maximize turbine wheel efficiency and exhaust gas scavenging velocity.
   

Key Benefits:

1. Symmetrical Twin-Turbo Styling: Allows engine builders to create perfectly mirrored left-and-right turbocharger piping layouts for show-quality engine bays.
2. Unmatched Thermal Durability: Handles aggressive anti-lag, launch control, and lean track conditions without degrading or cracking the housing structure.
3. Simplified Fabrication: Universal V-Band flanges allow custom exhaust builders to quickly weld downpipes and headers without worrying about complex bolt patterns.
4. Versatile Power Band: The mid-range 0.72 A/R sizing gives street and track cars immediate boost response with plenty of top-end airflow.
5. Gasketless Reliability: V-Band clamping design eliminates blown turbine gaskets, ensuring consistent boost control and zero exhaust leaks.
   

Technical Specifications

1. Garrett Part Number Reference: 871388-0004 (or equivalent G25 Reverse 0.72 V-Band assembly)
2. Max Temperature Limit: 1050°C
3. Wastegate Configuration: External Wastegate required
4. Inlet Flange Outer Diameter: Standard Garrett G25 V-Band
5. Outlet Flange Outer Diameter: Standard Garrett G25 V-Band