Throttle Body Gasket Kit - 52mm GM

The Throttle Body Gasket Kit - 52mm GM by BBK Performance is a precision-engineered replacement gasket assembly designed for General Motors TPI (Tuned Port Injection) throttle bodies. This kit addresses a common wear point in high-mileage and modified engines, where original composite gaskets degrade, crack, or fail under heat and pressure cycles. Mechanics and engine builders rely on this component to seal intake manifold-to-throttle body connections, preventing vacuum leaks that compromise air-fuel ratios and idle quality.

This kit features a 52mm composite gasket construction, which matches the bore diameter of most GM TPI throttle bodies and provides superior sealing properties compared to original equipment gaskets. The composite material withstands sustained engine heat and maintains its compressed state longer than rubber-based alternatives, reducing the risk of blow-out even under boost or high-RPM operation. The gasket's design accommodates the specific bolt patterns and surface finishes of GM TPI systems, ensuring a leak-free fit without modification or re-machining of mating surfaces.

Anyone performing throttle body removal, intake manifold service, or engine bay restoration on second-generation Corvettes, Camaros, Firebirds, or other GM TPI-equipped vehicles will benefit from this kit. Installation is straightforward—no special tools required—making it ideal for both seasoned mechanics and dedicated DIY enthusiasts tackling fuel injection diagnostics or carb-to-TPI conversions. This replacement gasket is essential preventive maintenance that restores proper engine breathing and fuel control, especially after years of thermal cycling.