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Description
Alliant AP57004 Fuel Contamination KitThe Alliant AP57004 Fuel Contamination Kit from GAP is what your 2011 2016 GM 6. 6 Duramax LML fuel system needs following a CP4 failure. Is your Chevrolet Silverado or GMC Sierra experiencing hard starts, no starts, or a sudden loss of power? Are you seeing DTCs of P0097, P0088, P0191, or P128E? There is a possibility that your CP4 pump has failed due to DEF (Diesel Exhaust Fluid) contamination, water contamination, or running low on fuel. If the CP4
The Alliant AP57004 Fuel Contamination Kit from GAP is what your 2011-2016 GM 6.6 Duramax LML fuel system needs following a CP4 failure. Is your Chevrolet Silverado or GMC Sierra experiencing hard starts, no starts, or a sudden loss of power? Are you seeing DTCs of P0097, P0088, P0191, or P128E? There is a possibility that your CP4 pump has failed due to DEF (Diesel Exhaust Fluid) contamination, water contamination, or running low on fuel. If the CP4 injection pump fails, it is critical to replace all components in the fuel system to prevent further damage to replaced components. Alliant Power's kit includes all of the necessary OE-style components to ensure your vehicle can get back to work.
Features:
- 100% Genuine OE Or OE-Equivalent Validated Components
- Includes All Necessary Components For Fuel System Repair
- Proudly Manufactured In An ISO 9001:2015 Certified Facility
- Each Fuel System Component Is 100% End Of Line Tested At 15 Different Points To Ensure Zero Defects
- Assembled In The USA
Kit Includes:
- Bosch Remanufactured CP4 Fuel Pump (OE# 12661059)
- Bosch Fuel Rail (Driver Side) (OE# 12651989) (Includes Pressure Regulator and Sensor)
- Bosch Fuel Rail (Passenger Side) (OE# 12620532)
- (8) Remanufactured Bosch Fuel Injectors (OE# 19256590)
- Regulated Return Fuel Line (OE# 12639000)
- (8) Rail to Injector Lines (OE#'s 12670468, 12670469, 12670471, 12670460)
- Rail to Rail Line (OE# 12670466)
- Driver Side Pump to Rail Line (OE# 12670474)
- Passenger Side Pump to Rail Line (OE# 12670475)
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, their 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 their customer-centric approach. They prioritize building long-term relationships with our customers by providing unmatched technical support, personalized service, and prompt assistance. Their 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 their products are readily available and easily accessible, making it convenient for customers to find the power solutions they need, wherever they may be.WARRANTY INFO:
2 Year / Unlimited Mileage
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Can’t go wrong with KN
Been using for years in all my vehicles. One time pricey but then years of trouble free performance enhancing filtration for your engine. Five minutes to install on 24’ Honda Pilot.
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Reviewed in the United States on March 21, 2026
★★★★★ 5
Good value
It’s a K&N quality filter, enough said
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Reviewed in the United States on April 22, 2026
★★★★★ 5
It fits
Fit my car perfectly. Hopefully it lasts longer than normal filters.
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Reviewed in the United States on March 26, 2026
★★★★★ 4
Air filter
Easy to install, correct fit
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Reviewed in the United States on June 27, 2023
★★★★★ 5
Worth it!
Perfect fit for my 23 MDX, easy to install and great value for money. Dealership quoted me a ridiculous amount to replace the air filter. I would recommend everyone to DIY. Bought it together with the cabin air filter. Will definitely keep an eye on longevity. These are washable so probably wont need to buy for at least a couple years.
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Reviewed in the United States on November 10, 2025