Alliant Power

Fuel Contamination Kit (Alliant Power) - 2011-2016 GM 6.6L LML Duramax AP57004

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MPN: AP57004

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Refundable Core Charge: $950

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Core Charge Agreement - If selecting to SEND CORE IN FIRST above, I understand that I will need to send in my core items first and have them accepted before the shipment of the new part or parts is authorized. If I select to pay the core charge, I understand that my part or parts can ship as soon as available.
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Fuel Contamination Kit (Alliant Power) - 2011-2016 GM 6.6L LML Duramax AP57004

Part # AP57004

This kit is a direct Bosch & OE kit offered by Alliant Power. No aftermarket parts.

For 2011-2016 GM Duramax 6.6L LML Engine Code Equipped Vehicles OE# 19420326 / 12702459 / 12672028

Does your Chevrolet Silverado / Express or GMC Sierra /Savana exhibit hard start, no start or sudden loss of power? Is your vehicle producing DTCs of P0097, P0088, P0191 or P128E? There is a chance that you have a failed CP4 pump due to DEF (Diesel Exhaust Fluid) contamination, water contamination or ran low on fuel.   Once the CP4 injection pump fails, there is the possibility that the contaminates have circulated through the entire fuel system and when modern day fuel systems components are high precision and are measured down to the micron of clearance, it is critical that all components are replaced to further prevent damage to replaced components.  Alliant Powers convenient kit contains all of the necessary OE componentry to ensure you have the critical components to get your vehicle back to work.


Features and Benefits:

  • Two year, Unlimited mile warranty 
  • 100% all Genuine OE or OE equivalent validated components
  • Each fuel system component is 100% end of line test at 15 different points to ensure zero 
  • One convenient kit that includes all necessary components to do a fuel system repair
  • USA assembled and built proudly in an ISO 9001:2015 Certified Facility

Included in the Box:

  • (1)  Bosch Reman CP4 Fuel Pump OE# 12661059
  • (1)  Bosch Fuel Rail (Driver Side) OE# 12651989 (Includes Pressure Regulator and Sensor)
  • (1)  Bosch Fuel Rail (Passenger Side) OE# 12620532
  • (8)  Reman Bosch Fuel Injectors OE# 19256590
  • (1)  Regulated Return Fuel Line OE# 12639000
  • (8)  Rail to Injector Lines OE#'s 12670468, 12670469, 12670471, 12670460
  • (1) Rail to Rail Line OE# 12670466
  • (1) Driver Side Pump to Rail Line OE# 12670474
  • (1) Passenger Side Pump to Rail Line OE# 12670475


  • 2011-2016 Chevrolet Silverado 2500 (6.6L Duramax LML)
  • 2011-2016 Chevrolet Silverado 3500 (6.6L Duramax LML)
  • 2011-2016 GMC Sierra 2500 (6.6L Duramax LML)
  • 2011-2016 GMC Sierra 3500 (6.6L Duramax LML)

Warranty:  24 month, unlimited miles, free of manufacturing defects in material and or craftmanship. 

About Alliant Power:  

With a legacy spanning decades, Alliant Power has emerged as a trusted and leading brand, dedicated to delivering innovative and reliable products to meet the diverse needs of customers worldwide.  Whether it's agriculture, construction, transportation, or industrial applications, our commitment to excellence ensures that our customers receive the highest quality power solutions that they can rely on, day in and day out.

Alliant Power takes pride in our customer-centric approach. We prioritize building long-term relationships with our customers by providing unmatched technical support, personalized service, and prompt assistance. Our commitment to customer satisfaction is at the core of everything we do, enabling us to be a reliable partner in powering their success.  As a global brand, Alliant Power has a widespread presence, serving customers across the globe. Our distribution network ensures that our products are readily available and easily accessible, making it convenient for customers to find the power solutions they need, wherever they may be.


Cross-Reference #'s: 0 445 010 817, 0 445 117 010, 0 986 435 410, 0 986 437 421, 12620534, 12638262, 12639151, 12645102, 12645103, 12658095, 12661059, 12672028, 19420326, 217-3440, 30-3004, 502518, 502-518, 7782PP, 7782-PP, 98077841, 986435410, DA2251044, DA2251057, DE01690, DKT1116LML, DT660034R, EX631096, EX836104, FJ1226, IP36

WARNING : This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to