FLEECE FPE-CRR-20-0806 2007.5-2018 CUMMINS REGULATED RETURN FUEL DISTRIBUTION BLOCK

Take control of fuel pressure on your 2007.5-2018 6.7L Cummins with the FLEECE FPE-CRR-20-0806 REGULATED RETURN FUEL DISTRIBUTION BLOCK. This billet fuel distribution block integrates a high-flow 20 PSI pressure regulator, cleans up under-hood plumbing, and supports high-horsepower dual CP3 and high-flow lift pump setups for Ram 2500/3500 trucks. Fleece FPE-CRR-20-0806, Cummins regulated return fuel distribution block, 6.7L CP3 dual pump kit, 2007.5-2018 Ram 2500 3500 fuel system upgrade, high flow fuel manifold, Fleece regulated return, Cummins 6.7L fuel pressure regulator block, CP3 fuel system parts

By combining a precision 20 PSI regulator with a multi-port distribution block, this kit holds a rock-steady fuel pressure at the CP3 where it matters most. Extra feed and return ports give you headroom for compound fuel systems, dual lift pumps, and high-flow race intakes without fighting factory hard lines or restrictive fittings.

Key Features

• Integrated 20 PSI high-flow pressure regulator for consistent CP3 inlet pressure at high RPM
• Multiple feed and return ports to support dual lift pumps and advanced fuel system layouts
• Replaces restrictive OEM hard lines with AN fittings and push-lock hose for clean plumbing
• Includes 0–60 PSI liquid-filled fuel pressure gauge for quick visual checks
• Engineered specifically for 2007.5–2018 6.7L Cummins dual CP3 and regulated return builds
• Works with high-flow side-draft intakes by eliminating factory hard line interference
• All metric straight-thread to AN fittings and hose needed to reroute returns are included

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Fitment

• 2007.5–2018 Dodge/Ram 2500 & 3500 with 6.7L Cummins 24V
• Designed for use with a 6.7L common rail fuel rail and (2) 6.7L CP3 pumps
• Can be used on a 5.9L block when converted to a 6.7L rail and dual 6.7L CP3s

The additional return port is designed so you can remove the factory fuel pressure relief valve hard line and the injector return galley hard line, providing critical clearance for high-flow side-draft intakes commonly used on competition and high-horsepower street trucks. The dual feed ports allow two lift pumps to be plumbed in for maximum volume and redundancy.

What’s Included

This kit ships as a complete regulated return distribution block package with fittings and hose:

• Fuel distribution block with integrated 20 PSI regulated return
• (2) Push-lock CP3 feed fittings
• (4) -6AN to M12 fittings
• (1) -6AN 120° to push-lock fitting
• (6) -6AN 90° to push-lock fittings
• (1) -6AN 45° to push-lock fitting
• (1) -6AN straight to push-lock fitting
• (1) -8AN straight to push-lock fitting
• (1) -8AN 90° to push-lock fitting
• (2) -8AN 45° to push-lock fittings
• (5) -6 to 9/16"-18 straight male fittings
• (4) -8 to 3/4"-16 straight male fittings
• (6 ft) -6AN (3/8") push-lock hose
• (4 ft) -8AN (1/2") push-lock hose
• (1) 0–60 PSI stainless steel-case liquid-filled gauge with 1.5" dial
• (2) M8x1.25 x 55mm stainless steel socket head cap screws

Important notes:

• This kit does not include 1/2" (-8AN) or 3/8" (-6AN) fuel line from the tank or lift pump to the distribution block or back to the tank. You will supply those runs based on your specific layout.
• Regulator is factory set to approximately 20 PSI, ideal for high RPM CP3 operation. Different setpoints can be achieved by changing the internal regulator spring.
• Intended for systems using high-flow aftermarket electric lift pumps that do not have built-in regulation.

Cross-Reference / Related Fleece Products (CPP Diesel)

Build a complete, high-flow Cummins fuel system using these complementary Fleece components available at CPP Diesel:

• FLEECE FPE-FFD-RF-3G-67 2007.5-2009 3RD GEN 6.7L CUMMINS FUEL DISTRIBUTION BLOCK
• FLEECE FPE-FFD-RF-4G 2010-2018 4TH GEN DODGE/CUMMINS FUEL DISTRIBUTION BLOCK
• FLEECE FPE-FFD-RF-HF-KIT-3G-67 2007.5-2009 6.7L CUMMINS FUEL DISTRIBUTION BLOCK HOSE & FITTING KIT
• FLEECE FPE-FFD-RF-HF-KIT-4G 2010-2018 CUMMINS FUEL DISTRIBUTION BLOCK HOSE & FITTING KIT
• FLEECE FPE-CP3-RTRN 3/8 INCH CP3 RETURN FITTING
• FLEECE FPE-CUMM-CP3K-6.7 6.7L CUMMINS CP3K
• FLEECE FPE-34196 6.7L CUMMINS DUAL PUMP KIT JUNCTION BLOCK WITH RAIL SENSOR PORT (3.5MM ID)
• FLEECE FPE-CP3-FEED 1/2 INCH CP3 FEED FITTING

Frequently Asked Questions

It replaces the factory fuel distribution and return plumbing with a billet block that has an integrated 20 PSI regulator. This holds a stable inlet pressure at the CP3, improves fuel flow with AN-style fittings and push-lock hose, and adds extra ports so you can support dual lift pumps and custom fuel system layouts.

The kit is designed around a 6.7L common rail fuel rail and dual 6.7L CP3 pumps. It can be used on a 5.9L block as long as you are running a 6.7L rail and two 6.7L CP3s, which is common on high-horsepower dual-pump builds.

It includes the AN adapters, push-lock fittings, short runs of -6AN and -8AN hose, and the hardware needed to replace the factory hard lines that interfere with high-flow intakes. You will still need to supply the longer 3/8" and 1/2" fuel line runs from the lift pump or tank to the block and back to the tank, sized for your specific plumbing layout.

This block is targeted at trucks running high-flow electric lift pumps and dual CP3 configurations where consistent CP3 inlet pressure is critical. It’s well suited for serious street/strip builds and competition trucks that need clean plumbing and stable pressure at high RPM and elevated horsepower levels.

Yes. The regulator comes pre-set at about 20 PSI, which is ideal for most high-RPM CP3 applications. Different pressure setpoints can be achieved by changing the internal regulator spring if your combination requires a different target.