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GARRETT 898344-0004 Spring Valve White for Wastegate GVW-40 Photo-0 GARRETT 898344-0004 Spring Valve White for Wastegate GVW-40 Photo-1
GARRETTGARRETT 898344-0004 Spring Valve White for Wastegate GVW-40
AED 52.13
Special order
GARRETT 895519-0001 Fitting Air Plug 10mm for Wastegate GVW-40 Photo-0
GARRETTGARRETT 895519-0001 Fitting Air Plug 10mm for Wastegate GVW-40
AED 17.07
Special order
GARRETT 894540-0006 Bolt V-band for Wastegate GVW-40 Photo-0 GARRETT 894540-0006 Bolt V-band for Wastegate GVW-40 Photo-1
GARRETTGARRETT 894540-0006 Bolt V-band for Wastegate GVW-40
AED 10.78
Special order
GARRETT 895518-0001 Washer Crush 10mm for Wastegate GVW-40
GARRETTGARRETT 895518-0001 Washer Crush 10mm for Wastegate GVW-40
AED 15.28
Special order
GARRETT 910476-0001 Diaphragm Kit, 40mm (includes Diaphragm assy and valve stem nut) for Wastegate GVW-40 Photo-0 GARRETT 910476-0001 Diaphragm Kit, 40mm (includes Diaphragm assy and valve stem nut) for Wastegate GVW-40 Photo-1
GARRETTGARRETT 910476-0001 Diaphragm Kit, 40mm (includes Diaphragm assy and valve stem nut) for Wastegate GVW-40
AED 296.60
Special order
GARRETT 894649-0008 Flange Outlet Weld 50mm for Wastegate GVW-50 Photo-0 GARRETT 894649-0008 Flange Outlet Weld 50mm for Wastegate GVW-50 Photo-1
GARRETTGARRETT 894649-0008 Flange Outlet Weld 50mm for Wastegate GVW-50
AED 124.04
Special order
GARRETT 894649-0003 Flange Inlet Weld 40mm for Wastegate GVW-40 Photo-0 GARRETT 894649-0003 Flange Inlet Weld 40mm for Wastegate GVW-40 Photo-1
GARRETTGARRETT 894649-0003 Flange Inlet Weld 40mm for Wastegate GVW-40
AED 104.27
Special order
GARRETT 898344-0003 Spring Valve Green for Wastegate GVW-40 Photo-0 GARRETT 898344-0003 Spring Valve Green for Wastegate GVW-40 Photo-1
GARRETTGARRETT 898344-0003 Spring Valve Green for Wastegate GVW-40
AED 52.13
Special order
GARRETT 910478-0003 Valve / Bushing Kit 50mm (includes valve, bushing, seal washer, O-ring, valve stem nut and seat) for Wastegate GVW-50 Photo-0 GARRETT 910478-0003 Valve / Bushing Kit 50mm (includes valve, bushing, seal washer, O-ring, valve stem nut and seat) for Wastegate GVW-50 Photo-1
GARRETTGARRETT 910478-0003 Valve / Bushing Kit 50mm (includes valve, bushing, seal washer, O-ring, valve stem nut and seat) for Wastegate GVW-50
AED 620.17
Special order
GARRETT 910478-0002 Valve / Bushing Kit 45mm (includes valve, bushing, seal washer, O-ring, valve stem nut and seat) for Wastegate GVW-45 Photo-0 GARRETT 910478-0002 Valve / Bushing Kit 45mm (includes valve, bushing, seal washer, O-ring, valve stem nut and seat) for Wastegate GVW-45 Photo-1
GARRETTGARRETT 910478-0002 Valve / Bushing Kit 45mm (includes valve, bushing, seal washer, O-ring, valve stem nut and seat) for Wastegate GVW-45
AED 494.34
Special order
GARRETT 910475-0004 V-band Kit, Inlet 50mm (includes V-band, Bolt, Locknut) for Wastegate GVW-50 Photo-0 GARRETT 910475-0004 V-band Kit, Inlet 50mm (includes V-band, Bolt, Locknut) for Wastegate GVW-50 Photo-1
GARRETTGARRETT 910475-0004 V-band Kit, Inlet 50mm (includes V-band, Bolt, Locknut) for Wastegate GVW-50
AED 350.53
Special order
GARRETT 910477-0001 Air Fitting Kit (includes Fitting, Bolt and 2X crush washers) for Wastegate GVW-40 Photo-0 GARRETT 910477-0001 Air Fitting Kit (includes Fitting, Bolt and 2X crush washers) for Wastegate GVW-40 Photo-1
GARRETTGARRETT 910477-0001 Air Fitting Kit (includes Fitting, Bolt and 2X crush washers) for Wastegate GVW-40
AED 104.27
Special order
GARRETT 894649-0007 Flange Inlet Weld 50mm for Wastegate GVW-50 Photo-0 GARRETT 894649-0007 Flange Inlet Weld 50mm for Wastegate GVW-50 Photo-1
GARRETTGARRETT 894649-0007 Flange Inlet Weld 50mm for Wastegate GVW-50
AED 134.82
Special order
GARRETT 894537-0001 Bolt Cap for Wastegate GVW-40
GARRETTGARRETT 894537-0001 Bolt Cap for Wastegate GVW-40
AED 6.29
Special order
GARRETT 898344-0006 Spring Valve Purple for Wastegate GVW-40 Photo-0 GARRETT 898344-0006 Spring Valve Purple for Wastegate GVW-40 Photo-1
GARRETTGARRETT 898344-0006 Spring Valve Purple for Wastegate GVW-40
AED 52.13
Special order
GARRETT 898344-0005 Spring Valve Brown for Wastegate GVW-40 Photo-0 GARRETT 898344-0005 Spring Valve Brown for Wastegate GVW-40 Photo-1
GARRETTGARRETT 898344-0005 Spring Valve Brown for Wastegate GVW-40
AED 52.13
Special order
GARRETT 894648-0004 Seat Valve 50mm for Wastegate GVW-50 Photo-0 GARRETT 894648-0004 Seat Valve 50mm for Wastegate GVW-50 Photo-1
GARRETTGARRETT 894648-0004 Seat Valve 50mm for Wastegate GVW-50
AED 215.71
Special order
GARRETT 898344-0001 Spring Valve Red for Wastegate GVW-40
GARRETTGARRETT 898344-0001 Spring Valve Red for Wastegate GVW-40
AED 52.13
Special order
GARRETT 905694-0001 Locknut V-band for Wastegate GVW-40 Photo-0 GARRETT 905694-0001 Locknut V-band for Wastegate GVW-40 Photo-1
GARRETTGARRETT 905694-0001 Locknut V-band for Wastegate GVW-40
AED 13.48
Special order
GARRETT 910475-0002 V-band Kit, Outlet 40mm (includes V-band, Bolt, Locknut) for Wastegate GVW-40 Photo-0 GARRETT 910475-0002 V-band Kit, Outlet 40mm (includes V-band, Bolt, Locknut) for Wastegate GVW-40 Photo-1
GARRETTGARRETT 910475-0002 V-band Kit, Outlet 40mm (includes V-band, Bolt, Locknut) for Wastegate GVW-40
AED 350.53
Special order
GARRETT 910475-0001 V-band Kit, Inlet 40mm / Outlet 45mm (includes V-band, Bolt, Locknut) for Wastegate GVW-40 Photo-0 GARRETT 910475-0001 V-band Kit, Inlet 40mm / Outlet 45mm (includes V-band, Bolt, Locknut) for Wastegate GVW-40 Photo-1
GARRETTGARRETT 910475-0001 V-band Kit, Inlet 40mm / Outlet 45mm (includes V-band, Bolt, Locknut) for Wastegate GVW-40
AED 350.53
Special order
GARRETT 894649-0001 Flange Inlet Weld 45mm for Wastegate GVW-45 Photo-0 GARRETT 894649-0001 Flange Inlet Weld 45mm for Wastegate GVW-45 Photo-1
GARRETTGARRETT 894649-0001 Flange Inlet Weld 45mm for Wastegate GVW-45
AED 104.27
Special order
GARRETT 894649-0004 Flange Outlet Weld 40mm for Wastegate GVW-40 Photo-0 GARRETT 894649-0004 Flange Outlet Weld 40mm for Wastegate GVW-40 Photo-1
GARRETTGARRETT 894649-0004 Flange Outlet Weld 40mm for Wastegate GVW-40
AED 91.68
Special order
GARRETT 894648-0002 Seat Valve 40mm for Wastegate GVW-40 Photo-0 GARRETT 894648-0002 Seat Valve 40mm for Wastegate GVW-40 Photo-1
GARRETTGARRETT 894648-0002 Seat Valve 40mm for Wastegate GVW-40
AED 140.22
Special order
GARRETT 908828-0002 External Wastegate GVW-45 1 Bar (14.5 PSI) Blue Photo-0
GARRETTGARRETT 908828-0002 External Wastegate GVW-45 1 Bar (14.5 PSI) Blue
AED 2,327.89
Special order
GARRETT 908829-0004 Wastegate GVW-50 1 Bar | 14.5 PSI (Silver) Photo-0
GARRETTGARRETT 908829-0004 Wastegate GVW-50 1 Bar | 14.5 PSI (Silver)
AED 2,795.27
Special order
GARRETT 908829-0002 Wastegate GVW-50 1 Bar | 14.5 PSI (Blue) Photo-0
GARRETTGARRETT 908829-0002 Wastegate GVW-50 1 Bar | 14.5 PSI (Blue)
AED 2,795.27
In stock
GARRETT 908827-0004 External Wastegate GVW-40, 1 Bar (14.5 PSI), Silver Photo-0
GARRETTGARRETT 908827-0004 External Wastegate GVW-40, 1 Bar (14.5 PSI), Silver
AED 1,860.52
Special order
GARRETT 908827-0002 Wastegate GVW-40 1 Bar | 14.5 PSI (Blue) Photo-0
GARRETTGARRETT 908827-0002 Wastegate GVW-40 1 Bar | 14.5 PSI (Blue)
AED 1,860.52
In stock
GARRETT 908829-0003 External Wastegate GVW-50 1 Bar (14.5 PSI) Black Photo-0
GARRETTGARRETT 908829-0003 External Wastegate GVW-50 1 Bar (14.5 PSI) Black
AED 2,795.27
In stock
GARRETT 908829-0001 External Wastegate GVW-50 1 Bar (14.5 PSI) Red Photo-0
GARRETTGARRETT 908829-0001 External Wastegate GVW-50 1 Bar (14.5 PSI) Red
AED 2,795.27
In stock
GARRETT 908828-0001 External Wastegate GVW-45 1 Bar (14.5 PSI) Red Photo-0
GARRETTGARRETT 908828-0001 External Wastegate GVW-45 1 Bar (14.5 PSI) Red
AED 2,327.89

Mastering Boost Control: A Guide to Wastegates

A wastegate is the brain of your turbo system. Its job is to control boost pressure by diverting excess exhaust gas away from the turbine wheel, protecting your engine from over-boosting. Choosing the right type and size is critical for performance and reliability. This guide will help you select the correct component.

Step 1: External Wastegate (EWG) or Internal Actuator (IWG)?

Your turbo setup dictates your choice. Use our "Product type" filter to find what you need:

  • External Wastegates: The choice for high-horsepower and custom turbo kits. These are standalone units that offer the most precise boost control, preventing issues like boost creep. This is where you'll find the industry-leading products from Tial and Turbosmart.
  • Internal Wastegate Actuators: An essential upgrade for cars with factory turbochargers. The stock actuator is often too weak to handle the increased pressure from an ECU tune. An upgraded actuator holds the wastegate shut, allowing the turbo to build and hold boost reliably.
  • Springs & Accessories: Here you'll find different rate springs to set your base boost pressure, as well as V-band clamps and flanges for installation.

Step 2: Key Selection Criteria

Two parameters are critical for performance:

Parameter Why It's Important General Rule
Size (e.g., 44mm, 60mm) Must be large enough to flow enough exhaust gas to control boost. Too small = boost creep. Bigger engine displacement and higher power targets require a larger wastegate.
Spring Pressure (e.g., 7 psi / 0.5 bar) Determines the minimum boost pressure your system can run. Choose a spring pressure equal to your desired minimum boost level. Higher boost levels are then achieved using a boost controller.