Product Description
Stabilize fuel pressure and protect your injectors. The Industrial Injection 60FS-STK-RRK Regulated Return Kit eliminates the factory dead-head rails on the 6.0L and adds an adjustable bypass regulator for consistent pressure under load. Ideal for tuned or heavy-tow trucks that need steady supply at the rails.
Fitment
- 2003–2007 Ford Super Duty 6.0L Power Stroke (F-250 / F-350 / Excursion)
What’s Included
Complete regulated-return plumbing with adjustable bypass regulator, lines/fittings, and install hardware (contents may vary by production run).
Key Benefits
- Eliminates dead-head rail design for smoother, more even fuel delivery
- Adjustable fuel pressure for stock to performance builds
- Improves injector reliability by reducing pressure drop at WOT
Recommended Parts (CPP internal links)
- ARP 250-4202 Head Stud Kit (2003–2007 6.0L)
- AutoMeter 0–100 PSI Fuel Pressure Gauge (1/8" NPT sender)
- AutoMeter 3279 Snubber Adapter (protects gauge sender)
- Fittings & Couplers — Fuel System
- Fuel Tank Sumps & Suction Tubes
- Alternative: XDP XD206 Regulated Return (03–07 6.0L)
Helpful Notes
- Set base fuel pressure per your build. Some listings indicate this kit is intended for systems running ~65 PSI supply pressure.
- Verify hose routing and regulator placement to avoid heat and abrasion.
- After initial setup, recheck pressure hot and under load.
FAQ
What does a regulated return kit do on a 6.0L?It ties both fuel rails together and returns excess fuel through an adjustable regulator, maintaining steady rail pressure and improving consistency at the injectors.
Is tuning required?No specific tune is required for installation. Always verify commanded vs. actual fuel pressure after installation and adjust as needed.
What pressure should I run?Follow the pressure guidance for your injectors and pump setup. Many 6.0L builds target ~60–65 PSI at the regulator; confirm with your parts and goals.
Will this help injector life?By reducing pressure drop at wide-open throttle and balancing the rails, a regulated return can help maintain stable supply to the injectors.
