Aluminum EFI TB Elbow LS 105MM 4150 Flange

The Aluminum EFI TB Elbow LS 105MM 4150 Flange is a precision intake manifold component designed for LS-platform engine builders and performance enthusiasts upgrading to modern electronic fuel injection systems. This throttle body elbow serves as the critical transition between your EFI throttle body and intake manifold, providing a clean, engineered path for fuel-air mixture delivery.

Constructed from lightweight aluminum, this 105MM bore elbow reduces weight while maintaining structural integrity under boost and high-RPM loads. The 4150 flange pattern ensures compatibility with standard GM LS throttle bodies and popular aftermarket intake manifolds, eliminating fitment guesswork on your build. The precision-machined design minimizes turbulence and flow restrictions, allowing your engine management system to meter fuel accurately across the entire RPM range.

This elbow is ideal for street and track LS builds, including LS1, LS2, LS3, and Gen IV platforms running aftermarket EFI conversions. Installation requires basic intake manifold removal and careful torque application to ensure a secure fit. With its design focused on performance, this component enhances throttle response and volumetric efficiency in your power plant.