TD520GE; TAD530GE; TAD531GE; TAD532GE; TD720GE; TAD720GE; TAD730GE; TAD731GE; TAD732GE; TAD733GE; TAD530GE MECH; TAD530GE EDC4; TAD531GE MEC Intake and Exhaust System Air Heaters TAD532GE, TAD720GE, TAD732GE, TAD733GE Parts on group Air Heaters: Pos. Part No Qty Parts name Comments 1. 20758403 [1] Heater, 24V 2. 20498498 [1] Connector, -pole 3. 20498524 [1] O-ring 4. 20550356 [5] Flange screw 5. 20550336 [5] Insulator 6. 984735 [2] Flange screw 7. 20758437 [2] Insulator 8. 20726089 [1] Connector, +pole 9. 20521558 [1] Insulator Parts catalog : Inlet Manifold TD720GE Inlet Manifold TD520GE Inlet Manifold TAD732GE, TAD733GE Inlet Manifold TAD730GE, TAD731GE Inlet Manifold TAD532GE Inlet Manifold TAD530GE, TAD531GE Exhaust Manifold and Turbocharger. Low Mounted Turbo. Exhaust Outlet Front TAD530GE, TAD531GE Exhaust Manifold and Turbocharger. Low Mounted Turbo. Exhaust Outlet Front TAD532GE Exhaust Manifold and Turbocharger. Low Mounted Turbo. Exhaust Outlet Front TAD730GE, TAD731GE Exhaust Manifold and Turbocharger. Low Mounted Turbo. Exhaust Outlet Front TAD732GE, TAD733GE Exhaust Manifold and Turbocharger. Low Mounted Turbo. Exhaust Outlet Front. Stage 1, Tier 1 TD520GE Exhaust Manifold and Turbocharger. Low Mounted Turbo. Exhaust Outlet Front. Stage 1, Tier 1 TD720GE