What is the purpose of an external wastegate?

An external wastegate controls the maximum boost pressure your turbocharger or supercharger can produce. It diverts exhaust gas away from the turbine wheel when a set pressure is reached, preventing over-boosting and potential engine damage.

What is included with the Turbosmart WG40 CompGate 40mm?

The Turbosmart WG40 CompGate 40mm wastegate includes the wastegate unit with a 7 PSI spring installed, and features a stainless steel body and aluminum actuator housing. V-band clamps and mating flanges are typically sold separately.

Can this wastegate be used with any turbo setup?

This is a 40mm external wastegate designed for custom turbocharger or supercharger installations. You will need to ensure your exhaust manifold has a dedicated port for the wastegate and that you have the correct V-band flanges and clamps for installation.

Turbosmart CompGate 40mm Wastegate 7 PSI TS-0505-1006

Name: Turbosmart WG40 CompGate 40mm - 7 PSI BLACK
Brand: Turbosmart
SKU: turbosmart-turbosmart-wg40-compgate-40mm-7-psi-black-t14-21112
Price: 359.99 USD
Availability: InStock

Turbosmart WG40 CompGate 40mm - 7 PSI BLACK

$359.99

In Stock

Turbosmart WG40 CompGate 40mm - 7 PSI BLACK Wastegate. Controls boost pressure in forced induction systems.

Key Features

Fits Turbosmart WG40 CompGate 40mm - 7 PSI BLACK
Stainless steel cast body and aluminum actuator housing offer durability and heat resistance.
V-band inlet and outlet connections are suitable for 40mm peer fitment.
Can be fitted with springs from 3 to 26 PSI for adjustable boost control.
Proprietary high-temperature silicon Nomex diaphragm handles boost pressure effectively.
Solid piece stainless steel valve ensures a reliable seal.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

This is the Turbosmart WG40 CompGate 40mm external wastegate, set to 7 PSI and finished in black. It's designed to manage and control boost pressure in turbocharged or supercharged engines, ensuring your engine doesn't exceed safe boost levels. This wastegate is a well-built unit that fits into tight engine bays, offering good flow and heat handling for its size.

The body is constructed from stainless steel for durability and heat resistance, while the actuator housing is made of aluminum. It uses a V-band connection for both the inlet and outlet, making installation straightforward for 40mm applications. Inside, a proprietary high-temperature silicon Nomex diaphragm handles the pressure, and the solid stainless steel valve ensures a good seal. The unique locking collar design helps keep everything secure. This particular unit comes with a 7 PSI spring, but it can be fitted with springs ranging from 3 to 26 PSI to tune your boost levels precisely. It also features twin 1/16" NPT reference ports for flexible boost control setups.

Keep in mind this wastegate is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper setup and connection to your boost control system.