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CP4 Pump Catastrophic Failure Replacement Kit (2011-2016)

Fits: 2011-2016 GM/Duramax LML
Was: $2,608.49
Sale: $2,508.48
Save: 4%
Save: $100.01

Customize Your Item

- -- Select Quantity -- -
 * required
- LML High Pressure Fuel Line Opti -
- LML HP Fuel Line Rail/CP4 Option -
 * required
- Add Complete Gasket Kit -
 * required


CP4 Pump Catastrophic Failure Replacement Kit. The early CP4 pumps were prone to a "grenade effect type of failure. This effect spreads debris contamination throughout the entire fuel system. No amount of flushing and cleaning will restore your system to the original operating conditions. Replacing all your major fuel system components is the best way to prevent future recontamination problems.
This is a new, completely updated, redesigned CP4 Pump.

This kit contains all the major components you need, with options to add additional components.(see drop down)

All Parts are Genuine OEM parts and carry factory warranty.

Basic Kit Contains:

8-New Bosch LML Fuel Injectors #0-445-117-010
1-CP4 Pump New Updated #12661059 #0-445-010-817
1-Passenger Side Fuel Rail(RH) #12620532
1-Drivers Side Fuel Rail (LH) #12651989
1-Fuel Return Hose Assembly #12639000

Injectors have a special Core Price of $300.00, Fully refundable upon receipt of your cores

***No Core Charge for CP4 Pump***

Additional Available Options

High Pressure Fuel Line Kit Option

2-High Pressure Fuel lines #12670468 (1&8)
2-High Pressure Fuel lines #12670469 (3&6)
2-High Pressure Fuel lines #12670471 (4&5)
2-High Pressure Fuel lines #12670460 (2&7)

High Pressure Fuel Line to Rail/CP4 Kit Option

1-HP Fuel Line Left Side of CP4 Pump to Fuel Rail #12670474
1-HP Fuel Line Right Side of CP4 Pump to Fuel Rail #12670475
1-HP Fuel line Fuel Rail to Fuel Rail #12670466

May be purchased individually or as a set.(See Drop Down)

Complete Catastrophic failure Gasket kit Available (See Drop Down)


Shipping Information

  • Item Requires Shipping
  • 35.0 lbs.
  • W20.0000” x H13.0000” x L22.0000”

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