MSD ATOMIC CHEV LS ENGINES THROTTLE BODY 103MM 4 BOLT # MSD2945MSD ATOMIC CHEV LS ENGINES THROTTLE BODY 103MM 4 BOLT # MSD2945 MSD's LS Throttle Body answers the need for a high quality throttle body with a mechanical throttle mechanism that bolts to most factory and aftermarket intakes. The parabolic bore form design helps deliver excellent drivability characteristics during part throttle that typical billet straight bore throttles just can't deliver. We incorporated factory style bearings and seals on the