The Twin K16 Kit. Use this kit to make most power available out of your 6.4L. The ability to maintain our 200hp injectors with little work. Use the Twin K16 with any injector nozzle and combination of aggressive tuning for maximum power. Kit comes with high flow passenger side lines, feed and return lines, mounting bracketry, pulleys, serpentine belt and all assorted fittings required for installation.

Please Note: KIT DOES NOT COME WITH THE INJECTION PUMP & REQUIRES A SECONDARY ALTERNATOR TO REPLACE THE PRIMARY ALTERNATOR.

Dual K16 vs. CP3 Conversion: What You Need to Know

Upgrading the fuel system on a 6.4 Power Stroke is critical for big power—but not all upgrades are equal. The CP3 conversion has major drawbacks that make the Dual K16 Kit the smarter, more reliable choice.

CP3 Kit Considerations:

• Rocker Box Modification Required
  Drilling into the passenger-side rocker box to install a fitting on the fuel rail introduces potential leaks and requires RTV sealing—compromising reliability.

• Bracket & Belt Alignment Problems
  Bent or poorly designed brackets often cause belt misalignment and premature wear, risking failure under high loads.

• Fuel Pressure Issues
  The CP3 runs at 100% max rail pressure all the time, forcing the factory K16 pump in the valley to regulate the entire system. This constant battle causes:

  • Uneven and unstable rail pressure

  • Reduced fuel delivery efficiency

  • The valley K16 must be dialed back in tuning, feeding only the driver-side rail, creating an imbalanced fuel system

Dual K16 Kit Advantages:

• No Drilling Needed
  Clean installation with no rocker box modifications, preserving factory seals and preventing leaks.

• Proper Alternator & Pump Placement
  Secondary K16 replaces the primary alternator position; the alternator is relocated, maintaining proper accessory layout and charging capacity.

• Perfect Belt Alignment
  Precision brackets ensure factory-correct belt alignment and tension, preventing wear and failure.

• Balanced & Regulated Fuel Pressure
  Both K16 pumps operate together, providing even, factory-controlled pressure across both fuel rails, eliminating guesswork and uneven fuel delivery.

Bottom Line:

The Dual K16 Kit offers a balanced, reliable, and efficient fuel system upgrade—no hacks, no constant max pressure battles, just smooth, consistent fueling for serious 6.4 Power Stroke performance.