This is a "Precision PTE GEN 2 46mm Wastegate" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.
Precision Turbo and Engine Gen2 Wastegates
Precision Turbo and Engine Gen2 wastegates are high-quality, economical, and perfect for the automotive enthusiast looking to get the most from their turbocharged car, truck, or any other vehicle. PTE's Gen2 external wastegates are fully adjustable, designed to be direct-fit replacements for other units on the market, and compatible with most aftermarket manual or electronic boost controllers for ease of use.
•High-grade, high-temperature stainless steel and billet aluminum components for the best in strength, style and functionality
•A 347 stainless investment cast valve body to provide consistent performance without fatigue or failure, while also allowing for accurate boost control
•An internal Nickel Chromium alloy valve
•Several different 17-7 precipitation hardened springs for further adjustment of boost levels
•Standard clamp-style configuration for easy mounting
•A satin black anodized finish with 6061 aluminum billet cap
•All clamps necessary for installation