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Garrett GVW-40 External Wastegate

Garrett GVW-40 External Wastegate

Regular price $372.74 USD
Regular price Sale price $372.74 USD
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Garrett GVW-40 External Wastegate

Vent exhaust gas around the turbine and precisely regulate turbocharger shaft speed on any racing turbocharger with Garrett's 40mm external wastegate kit GVW-40. Garrett worked tirelessly on these GVW wastegates (available as the GVW-40, GVW-45, and GVW-50). Originally the team thought it would be easy, but after digging into the design, and figuring out what it takes to truly make the best wastegate, the team ended up spending a full year designing the product. 

The GVW-40 wastegate has been CFD tested for maximum flow, thermal efficiency, and durability. The Garrett GVW-40 valve body is cast from high-temp stainless steel and rated for exhaust temperatures up to 1050 degrees C. The design was specifically crafted so this wastegate stays dead consistent no matter the temperature year after year. This wastegate solution delivers the maximum flow possible (5% more than any competitor), giving you the best performance from your turbocharger and the most efficient output from your engine.

When it ships, the GVW-40 is set to 1 bar (14.5 psi). With the included springs, you can configure it from 0.2 bar (2.9 psi) to 1.7 bar (24.7 psi) base boost. Garret includes all fasteners, springs, fittings, V-bands, clamps, and flanges with this kit so you're ready to begin installation as soon as it arrives. Note: We recommend using the GVW-40 for twin-scroll dual wastegate applications.

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External Wastegates: Features

  • CFD tested for maximum flow and thermal efficiency
  • Optimized actuation stability and temperature resistance for superior
  • Replaceable valve and bushing components to increase service life
  • Robust design for easy diaphragm replacement
  • Liquid-cooled actuator ports for use on severe applications
    (up to 52% reduction in body temp)
  • Anodized aluminum actuator cover
  • Four Colors: Red | Blue | Black | Silver
  • Three Sizes: 40mm | 45mm | 50mm
  • Springs | Fittings | Flanges | V-bands included
  • Standard Base Pressure: 1 Bar | 14.5 PSI
  • Maximum Base Pressure:
    GVW40: 25 PSI | 1.7 Bar GVW45 | GVW50: 23 PSI | 1.6 Bar
  • Minimum Base Pressure: 3 PSI | 0.2 Bar

Kit Contents

GVW Wastegates include all the following parts:

  • Springs
  • V-Band: Inlet | Outlet
  • Outlet Flange
  • Inlet Flange
  • Valve Seat
  • Washers: M8 | M10
  • Water Fittings
  • Banjo Bolt and Banjo Fittings
  • Air Plugs

Material Data

The valve housing is cast from high temp stainless steel and rated for exhaust temperatures up to 1050° C. CFD optimized for maximum flow and thermal efficiency.

  • Valve Housing: High temp stainless steel rated up to 1050° C
  • Diaphragm: High temp Nomex reinforced elastomer
  • Actuator Cover: Fully-machined anodized 6061 aluminum
  • Valve Guide | Bushing: Nitronic 60
  • Valve: high temp stainless steel with plated stem
  • V-Band: CNC machined 304 stainless steel
  • Flanges: Fully-machined 304 stainless steel
  • Springs: 17/7 PH stainless steel

Mechanical Data

Garrett Vent | External Wastegates are created by the engineers that designed G-Series and GTX Gen II turbochargers. Available in three sizes: 40mm | 45mm | 50mm

  • Valve Diameter: 40mm | 45mm | 50mm
  • Valve Mass: (40mm)1.27kg | 45oz (45mm) 1.47kg | 52oz (50mm) 1.56kg | 55oz
  • Max Spring Base Pressure: 1.7 bar | 25 psi (1:1 backpressure ratio)
  • Minimum Spring Base Pressure: 0.2 bar | 3 psi (1:1 backpressure ratio)
  • Port Fitting | Air: M10x1.0 to hose barb (hose ID 6mm | .25in)
  • Port Fitting | Water: M8x1.0 to AN-3


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