For LSX LS2 LS3 LS7 102mm Electronic Throttle Body Drive By Wire + Harness Wire. For LSXR intake Manifolds LS LS7 Engine. This is a great addition to the FAST LSXR 102mm Intake Manifold. This throttle body has a 4.23" OD, so you'll want to use a 4.25"coupler.