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The Two Plunger Bosch EFEP 385A

Our dedicated TWO plunger bench

This 385A is same model as our other 385As, but has been specifically set up for 2-plunger Bosch fuel injection pumps commonly seen in vehicles like the W128 220SE, W111 220SEb, and the W112 300SE. 

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While the pump itself only has 2-plungers the vehicles still have six injectors, requiring each plunger to feed fuel to three injectors at one time. Through some special modifications including a mounted rack, we can easily exchange injectors to test working condition and rearrange the order in an attempt to equalize fuel distribution.

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While these pumps are more difficult to calibrate and allow less control throughout the process, our 2-plunger bench setup ensures that we will detect performance issues while providing a simple and relatively quick method of testing different injectors, injector lineups, or change focus to the internal workings of the pump if needed. 

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