New SMP Fuel Injection Pressure Regulator For 92-93 Mercedes-Benz 500SL 5.0L V8. Fuel Injection Pressure Regulator. Fuel Pressure Regulator Notes: Eng: 5.0L V8. Confirm Your Vehicle Compatibility. Eng: 5.0L V8. Also review the notes section in the compatibility chart for additional specifications about this part.