Diesel Pickups - Bosch CP4.2 High Pressure Fuel Pump

generated with AI, may contain errors

The Bosch CP4.2 is a high-pressure common-rail fuel pump used widely in diesel engines (2011+ 6.7L Power Stroke, LML Duramax) featuring two pumping chambers driven by a two-lobe cam. It is known for high-pressure output but is prone to catastrophic failure due to roller lifter wear, which can contaminate the entire fuel system.

Key Details of the Bosch CP4.2:

Design: Radial piston pump with two high-pressure plungers.
Applications: Primarily 2011–2019+ Ford 6.7L Power Stroke and 2011–2016 LML Duramax.
Failure Mechanism: The cam-to-roller interface can seize, causing metal debris to contaminate injectors and the fuel tank.

Preventive Measures: Use of a bypass kit (like the S&S Diesel Motorsport Gen2.1) or an improved pump with a finer screen, such as the Exergy Performance pump, increases protection against debris.
Performance: Capable of supporting 650+ horsepower in upgraded forms.




human content

replacement price $1,500 to $1,900 plus plus [ prices may vary ]

installin a filter or screen would be a gud idea

or a bypass kit fer $2,400

aFe Momentum GT Cold Air Intake 20-23 Ram 1500 3.0L EcoDiesel - DPP

google
S&S Diesel Motorsport CP4 To DCR Pump Conversion 11-24 Ford 6.7L Powerstroke [ gen 2.1 ]

if da linky dont werk