Garrett GVW-40 Wastegate Kit 40mm
Garrett GVW-40 Wastegate Kit 40mm
Garrett GVW-40 Wastegate Kit 40mm
Garrett GVW-40 Wastegate Kit 40mm
Garrett GVW-40 Wastegate Kit 40mm
Garrett GVW-40 Wastegate Kit 40mm
Garrett GVW-40 Wastegate Kit 40mm
Garrett GVW-40 Wastegate Kit 40mm
Garrett GVW-40 Wastegate Kit 40mm

Garrett GVW-40 Wastegate Kit 40mm

Regular price$354.99
Shipping calculated at checkout.
  • Free standard shipping for purchases over $250 within USA

Garrett's 40mm external wastegate kit GVW-40 allows for venting of exhaust gas around the turbine and precise regulation of turbocharger shaft speed on racing turbochargers. The GVW wastegates (also available as GVW-45 and GVW-50) were a challenge to craft; that expectation of a simple design completely changed after the team spent a whole year perfecting it.

The GVW-40 wastegate has undergone extensive CFD testing for optimal flow, thermal efficiency, and durability. Constructed from high-temp stainless steel, the Garrett GVW-40 valve body is designed to withstand exhaust temperatures of up to 1050°C. It provides consistent performance no matter the temperature, offering a 5% increase in maximum flow over competitors for optimal turbocharger and engine output.

The GVW-40 is shipped at 1 bar (14.5 psi) and, with its included springs, can be configured to output from 0.2 bar (2.9 psi) to 1.7 bar (24.7 psi) base boost. Every single fastener, spring, fitting, V-band, clamp, and flange necessary for installation is included, so setup is effortless. Note: This is especially suited for twin-scroll dual wastegate applications.


  • CFD tested for maximum flow and thermal efficiency
  • Superb durability thanks to optimized actuation stability and unrivaled temperature resistance
  • Bushing components are fully-replaceable, increasing service life
  • Easy Nomex diaphragm replacement
  • Anodized aluminum top cap with optional watercooled actuator port


  • Valve diameter: 40mm
  • Valve mass: 1.27kg | 45 oz
  • Maximum spring base pressure: 1.7 bar | 25psi (1:1 backpressure ratio)
  • Minimum spring base pressure: .02 bar | 3psi (1:1 backpressure ratio)
  • Port fitting, air: M10x1.0 to hose barb (hose ID 6mm | .25in)
  • Port fitting, liquid: M8x1.0 to AN-3


  • Valve housing: high-temp stainless steel rated up to 1050 degrees 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: full-machined 304 stainless steel
  • Springs: 17/7 PH stainless steel


  • Maximum Exhaust Gas Temperature, peak: up to 1050 degrees C
  • Maximum thermal stress (non-cooled): 270 degrees C actuator body temperature during thermal cycle testing
  • Maximum thermal stress (watercooled): 130 degrees C body temp during thermal cycle testing

*Direct Replacement for these other wastegates: TiAl MVR, Turbosmart 45mm, Precision 46mm


Remanufactured/Rebuilt original turbo carry a 6 Month Warranty against defects. No gaskets included.

 *There is a $500 Core Charge included in price. Core must be received within 30 days to receive refund. If core is not received within that time the Warranty will be Voided. No Exceptions. 


This guys are hands down the best turbo specialist in South Florida. Well worth the 2 hours drive. Got my Perkins Marine turbo Remanufactured and all I can say is wow. From a rust bucket to a brand new looking turbo in 3 days exactly. Just as promised, and the best part is I saved over $1k compared to the cheapest price I could find. They just got a life long customer.
If you are looking for a true turbo specialist, give these guys a call. Highly recommend them!
Miguel Navarro (Miguelito)
Excellent service, fast turnaround times, very professional. I will continue doing business with them.
Tiffany Porter
Saved me the money and headache of buying a new turbo kit and the turn around time to rebuild was extremely fast
Konstantine Farris