Bosch 69435 Fuel Pump, Electric – Mercedes | 0020919701 0020919701MY 0030915301 0580254910

• The Bosch 69435 fuel pump is an original equipment replacement fuel pump for the Mercedes 0020919701 fuel pump.
• The Bosch 69435 fuel pump is used on the 1984-1987 190, 1987-1989 260, 1977-1981 280, 1986-1992 300, 1981-1985 380, 1976-1980 450, and 1984-1985 500 engines with CIS injection.
• Bosch is the leading manufacturer of fuel system components, ignition parts, and all other electrical components for European auto manufacturers, providing innovative concepts and solutions to meet and beat ever increasing industry standards for safety and fuel efficiency.

The Bosch CIS fuel injection system was the fuel delivery system used by Mercedes from 1976 through 1994 on most vehicles produced. The CIS injection system relied on a fuel pump to deliver constant fuel pressure to a fuel distributor mounted on top of an air flow meter. Intake air passing through the air flow meter would move a vane within the air flow meter to determine air volume entering the engine and letting the fuel distributor know how much fuel each cylinder will need. Once the fuel distributor delivers enough fuel pressure to a particular fuel injector, the injector opens delivering fuel to the cylinder. If the fuel pump fails, not enough fuel will flow to build pressure for the CIS injection system to operate, if any fuel flows at all.