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Inside a Bosch distributor

Inside a Bosch distributor Vacuum advance unit Baseplate Mechanical advance (bob weights) Condenser Contact breakers

The Bosch distributor is fairly conventional inside, with the contact breaker assembly and mechanical advance mechanism all housed inside the distributor body.

The unit differs from many other distributors in that the condenser is mounted on the outside of the unit. If your ignition system is fitted with a ballast resistor, this may also be mounted on the distributor next to the condenser.