This kit eliminates the bulky factory fuel bowl and replaces it with a clean, efficient regulated return system. It gives you full control over base fuel pressure adjustment, supports the addition of a secondary injection pump, and simplifies the engine bay for better serviceability and flow.
Unlike other kits on the market that omit a regulator, this system includes one by design—because it’s absolutely necessary. The 6.4L’s K16 injection pump is not internally regulated like a CP3, which means it relies on consistent fuel pressure to function properly. Without a regulator, you risk low-pressure conditions that can damage the pump or compromise injection performance.
The K16 also uses diesel fuel as its primary lubricant, so maintaining proper fuel pressure isn’t just about performance—it’s about protecting your investment.
