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Protect the Fuel System That Can Bankrupt a Build

The CP4.2 pump is the Achilles heel of the 6.7L Powerstroke — when it fails it sends metal debris straight through the injectors, rails, and lines, commonly a $10,000+ repair. A CP4 disaster-prevention bypass reroutes the pump's case fuel through a filter so a failure is caught instead of grenading the whole high-pressure system. Cheap insurance, plus dual fueler and filter-conversion kits for higher-demand builds.

Fits these trucks

  • Ford 6.7L Powerstroke (2011–2025) — CP4 disaster-prevention bypass kit, dual fueler kit, fuel filter conversion kit

Frequently Asked Questions

Why is the 6.7 CP4 pump a problem?
When it fails it pushes metal debris into the injectors, rails, and lines — usually a several-thousand-dollar repair of the entire high-pressure system.
What does a CP4 disaster-prevention bypass do?
It reroutes the pump's case/return fuel through a filter, so if the CP4 fails the debris is caught instead of destroying your injectors and rails. It limits the damage to a pump instead of the whole system.
What's a dual fueler kit?
It adds a second fuel pump for higher-demand builds that out-flow the single factory CP4.
Will it fit my truck?
These fit the 2011–2025 6.7L Powerstroke. Match your year on the product page. Get the right part the first time.