Chev Holden Holley EFI Throttle Body 105mm 4 Bolt # HO112-583Chev Holden Holley EFI Throttle Body 105mm 4 Bolt # HO112 583 Throttle Body, LS, MPI, 1 Venturi, 105mm, Billet Aluminum, Black Anodized, Chevy, Small Block LS, Each Throttle Body Style: Multi port injection, MPI Throttle Body Actuation: Cable Venturi Quantity: 1 Venturi Diameter (mm): 105. 00mm TPS Sensor Included: No IAC Motor Included: No Gaskets Included: Yes Hardware Included: No Injectors Included: No Throttle Body Material: Billet aluminum