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CP4 Let You Down? Alliant Power's Contamination Kits to the Rescue!

by Devon Mistak 13 Mar 2025

When it comes to maintaining your 6.7L Power Stroke, fuel system contamination is one of the worst nightmares a diesel owner can face. A single tank of bad fuel or water intrusion can wreak havoc on your fuel system, leading to costly repairs and significant downtime.

Fortunately, Alliant Power offers high-quality Fuel Contamination Kits for 2011-2022 Ford 6.7L Power Stroke engines to help you get back on the road quickly and reliably.

Alliant Power Fuel Contamination Kit for Ford 6.7L Powerstroke

Alliant Power · Fits 2011-2022 Ford 6.7L

Fuel Contamination Kits

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Why Is Fuel Contamination a Big Deal?

The modern 6.7L Power Stroke is engineered for high performance and efficiency, but it operates under extreme pressure, reaching up to 36,000 PSI in the fuel system. Even the smallest amount of contamination, whether from water, debris, or improper fuel, can cause catastrophic damage to components like the high-pressure fuel pump (HPFP), injectors, and fuel rails.

Common causes of contamination:

Water Intrusion

Poor-quality fuel or condensation

DEF Contamination

Accidental misfueling with diesel exhaust fluid

Metal Shavings

Debris from a failed CP4 / HPFP

Dirt & Debris

Contaminants entering the fuel tank

The Solution: Alliant Power's Fuel Contamination Kit

Alliant Power's Fuel Contamination Kit is a comprehensive solution for restoring your fuel system after contamination. Instead of replacing parts one at a time, it replaces every critical component contamination can reach, so nothing is left behind to damage your new parts.

What's included:

  • New OE Bosch fuel rails (driver and passenger side)
  • Remanufactured OE Bosch injectors with hold-down bolts and injector lines
  • Pump-to-rail, supply, and return fuel lines
  • Fuel pressure sensor and related fuel pipes (varies by model year)
  • High-pressure fuel pump install kit
About the pump: "No Pump" kits don't include the high-pressure fuel pump itself. For 2011-2019 trucks, you can also get the kit bundled with the S&S Diesel DCR pump, a more durable, plug-and-play replacement for the CP4 that doesn't require ECU calibration.

Why we recommend it

  • Complete replacement so no traces of contamination remain
  • OE or OE-equivalent components, each end-of-line tested for leaks and performance
  • Prevents secondary failures from lingering contamination
  • Saves time and money with a one-time repair instead of piece-by-piece fixes
  • 2-year, unlimited-mile warranty for peace of mind

Find the Right Kit for Your Truck

Ford 6.7L No Pump With S&S DCR Pump
2011-2014 Shop → Shop →
2015-2016 Shop → Shop →
2017-2019 Shop → Shop →
2020-2022 Shop → —

A refundable core charge is added to each kit.

Protect Your New Fuel System

Once your fuel system is restored, a disaster prevention kit helps keep debris from a future CP4 failure from reaching your new injectors and rails.

S&S Diesel Gen2.1 Disaster Prevention Kit

S&S Diesel · Fits 2011-2027

Gen2.1 Disaster Prevention Kit

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Related: Best Upgrades for the 2023-2027 6.7 Powerstroke

Final Thoughts

If you own a 2011-2022 Ford 6.7L Power Stroke, knowing where to get a Fuel Contamination Kit is a smart move. Whether you're dealing with fuel-related issues now or planning ahead, Alliant Power's kits are one of the best ways to restore your truck's performance and reliability.

Don't Let Contamination Ruin Your Fuel System

Not sure which kit fits your truck? Our team can help.

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