RAC509 Powerlite Porsche 928 4.5, 4.7, 5.0, 5.4 Starter Direct replacement for original. Porsche 928 4.5, 4.7, 5.0, 5.4 Strong, powerful, offset gear-reduced starter motor, delivering huge cranking torque through a set of steel internal gears. Lightweight, compact & durable this unit starts the engine faster with immense power, whilst drawing less current from the battery.