Garrett GVW-50 External Wastegate – ultimate boost control for high-power turbos

The Garrett GVW-50 wastegate is the largest version in the GVW lineup, purpose-built for high-performance turbocharged engines. With its 50 mm valve diameter, CFD-optimized stainless steel housing, and water-cooled actuator head, the GVW-50 ensures maximum flow capacity, precise boost control, and outstanding durability – even at extreme exhaust gas temperatures up to 1050 °C.

Maximum flow with CFD-optimized design

The GVW-50 has been CFD-tested (Computational Fluid Dynamics) to provide optimized gas flow and thermal efficiency. The large 50 mm valve enables accurate boost regulation for high-horsepower setups and aggressive turbo applications. Perfect for race builds or street cars with big turbo conversions.

Water-cooled actuator for extreme conditions

One of its key advantages is the water-cooled actuator head, which reduces housing temperature by up to 52%. This protects the diaphragm and internal components during extreme operation. If not required, the water ports can be easily blocked off.

Premium materials for long-lasting performance

Garrett engineers rely on advanced materials to guarantee stability and durability:

• Valve housing: stainless steel, rated up to 1050 °C
• Diaphragm: high-temp elastomer reinforced with Nomex
• Valve & stem: stainless steel with special coating
• Valve guide & bushing: Nitronic 60
• Cap: CNC-machined anodized 6061 aluminum
• V-band & flanges: CNC-machined 304 stainless steel
• Springs: 17-7 PH stainless steel, consistent even at high temps

Easy service & compatibility

The redesigned cap makes spring changes and servicing straightforward. Another big plus: the GVW-50 is directly interchangeable with the Turbosmart Gen V ProGate 50, making it simple to integrate into existing setups. Despite its size, it remains compact enough for tight engine bays thanks to the V-band connection system.

Technical data at a glance

• Valve diameter: 50 mm
• Weight: approx. 1.56 kg
• Base pressure: 0.2 – 1.6 bar (preset: 1.0 bar)
• Max exhaust gas temperature: 1050 °C
• Max actuator temp uncooled: 270 °C
• Max actuator temp water-cooled: 130 °C
• Air fitting: M10x1.0 for 6 mm hose
• Water fitting: M8x1.0 to AN-3
• Available colors: black

What’s included

• Garrett GVW-50 Wastegate
• Complete spring set (0.2 – 1.6 bar)
• Inlet & outlet V-band clamps
• Inlet & outlet flanges
• Valve seat
• M8 & M10 washers
• Water fittings incl. banjo bolts
• Thread plugs

Conclusion

The Garrett GVW-50 wastegate delivers maximum flow, thermal stability, and superior material quality. With its water-cooled design and direct compatibility with the Turbosmart Gen V ProGate 50, it sets the standard for external wastegates in motorsport and turbo tuning. Reliable boost control, even under the toughest conditions – exactly what high-power builds demand.