1. Product Name
Bosch Common Rail CP1 Pump Plunger F01M101781
2. Product Introduction
This is the plunger (also called the pump element or T-element plunger) of a Bosch CP1 common rail fuel injection pump.
The CP1 pump is part of the common rail system in Bosch diesel engines—the plunger is a critical internal component that helps pressurize the fuel by moving within the cylinder or chamber.
Specifications/Features
OEM/Reference Number: F01M101781.
Construction: It is typically made of high-strength steel because it must withstand high pressure, wear, and precise tolerances.
Use: For Bosch CP1 pumps—replacing or refurbishing the pump when the plunger is worn, damaged, or out of specification.
Importance
A worn or damaged plunger can cause fuel delivery problems: low pressure, uneven fuel flow, decreased power, increased emissions, rough idle, and even pump failure.
Replacing the plunger requires a precise fit and typically involves replacing the plunger, barrel, and sometimes seals, springs, and other components. If tolerances are off, the life of other components will be affected.
