4-LML-CP4-removal-rear

graphic showing details of fuel injection pump installation
Photo showing the Bosch CP4.2 pump is located at the front of the Duramax’s engine valley and behind the water pump.
Photo showing that the CP3 high-pressure fuel-injection pump (left) is slightly larger bodied than the factory CP4.2 found on the 2011 to 2016 Duramax LML.

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