FLEECE FPE-CP3-RTRN 3/8 INCH CP3 RETURN FITTING

The FLEECE FPE-CP3-RTRN 3/8 INCH CP3 RETURN FITTING is a high-quality, OE-grade replacement designed for CP3 fuel pumps used in performance and service applications. Built to Fleece Performance Engineering standards, this fitting ensures a secure and leak-free return connection. Ideal for CP3 conversions, pump rebuilds, and maintenance on high-demand Cummins fuel systems. Fleece CP3 return fitting, CP3 hardware, Cummins CP3 service parts, 3/8 CP3 fitting, FPE CP3 RTRN, CPP Diesel

Features

• Precision-machined for proper CP3 return sealing
• 3/8" return size for standard CP3 applications
• OE-quality fitment and durability
• Perfect for service, conversions, and high-performance builds

Fitment

Compatible Pumps: All Bosch-style CP3 pumps used in 5.9L & 6.7L Cummins applications, as well as CP3 conversion kits on later engines.
Common Vehicles: 2003–2018 Dodge Ram Cummins using CP3 or CP3 conversion systems.

Cross-Reference / Related Fleece Items (CPP Diesel)

• FLEECE FPE-CP3-FEED — 1/2" CP3 Feed Fitting
• FLEECE FPE-CUMM-CP3K-6.7 — 6.7L Cummins CP3K Pump
• FLEECE FPE-CUMM-CP3-10MM-5.9 — 5.9L Cummins 10mm Stroker CP3
• FLEECE FPE-CUMM-PSB-5.9 — PowerFlo 750 Lift Pump (5.9L)

This fitting provides the correct 3/8" return port connection on a CP3 pump, ensuring proper fuel return routing and leak-free operation.

Yes—many CP3 conversion kits require the correct 3/8" return fitting to complete the installation.

Yes. It is compatible with all Bosch-based CP3 units used in Cummins platforms and aftermarket conversions.

It restores proper fuel system function. While not a power add-on by itself, it is essential for reliable CP3 operation.

California Proposition 65 warning applies. See the specification table for link and details.

Specifications for FLEECE FPE-CP3-RTRN