420SEL 560SEL 560SL New Fuel Pump Relay

New KAE fuel pump relay fits models listed above from 1986 to 1991. Failure of this relay is the number one cause of your engine quitting or not starting. Get under the rear of you car to hear your fuel pump run when turning on the key. It may only run for a short time and then shut off (that is normal). If it does not run at all it is either your fuel pump relay or a burned out fuel pump motor.