Part Number: 1537511 (Plug) Part Number: 1537518 (Cat) Part Number: 1537519 (Regulator pcb) Part Number: 15375-1AA (Mount) Part Number: 1537-51J (No description) Part Number: 1537-51K (Factory original brand new) Part Number: 153752 (N/a) Part Number: 1537520000 (Weidmuller) Part Number: 1537520-103 (Bracket w/8130) Part Number: 1537-524 (Api) Part Number: 1537525 (Disk) Part Number: 15375-256 (Coupling) Part Number: 1537526-1 (Core adjust) Part Number: 1537526-2 (Core radio freq)