Filtration and separation of water from the fuel is important for trouble-free operation and long life of the fuel
system. Some of the clearances between the fuel injection pump parts are very close. For this reason, the parts
can easily be damaged by rust formation and contaminants.
Be sure to use the correct elem ent.
The element has a valve which can be opened regularly to drain the collected water.
A dual water separator/filter adapter provides additional filtering capacity. The fuel flows through the adapter to a
larger combination fuel water separator filter, and back to the fuel filter for final filtering.
Regular maintenance, including draining moisture from the fuel water separator/filter and supply tanks, is essential to keep water out of the fuel.
1991 model and newer automotive 5 series engines that are equipped with the Bosch P7100 in-line fuel injection
pump have the fuel filter mounted at the rear of the intake manifold, as shown.
