FLEECE FPE-34200-24 24 INCH HIGH PRESSURE FUEL LINE 8MM X 3.5MM LINE M14 X 1.5 NUTS

Fabricators and engine builders: stop re-bending crusty factory fuel lines and start with a clean slate. The FLEECE FPE-34200-24 24 INCH HIGH PRESSURE FUEL LINE gives you a universal 24" stick of OEM-quality 8mm x 3.5mm steel line with M14 x 1.5 nuts, ready to bend for custom common-rail and CP3 fuel system plumbing. Built for serious pressure and leak-free sealing, this is the go-to line for clean, professional-looking fuel setups. Fleece FPE-34200-24 high pressure fuel line, 24 inch 8mm x 3.5mm diesel fuel line, M14 x 1.5 nuts, CP3 fuel system plumbing, common rail high pressure line, Fleece Performance Engineering, CPP Diesel

Key Features

• 24" high pressure fuel line stick – ideal for custom routing
• 8mm x 3.5mm steel line with M14 x 1.5 nuts on each end
• OEM-quality construction for reliable, leak-free performance
• Perfect for CP3 feed/return and common-rail hard-line projects
• Ready to bend – pair with a quality tubing bender for pro-grade results

Fitment / Use Case

Type: Universal high pressure fuel line stick
Line size: 8mm x 3.5mm
Fittings: M14 x 1.5 nuts (both ends)
Typical applications: custom high pressure fuel plumbing on common-rail diesel platforms (Cummins, Duramax, Power Stroke, and other engines using 8mm x 3.5mm / M14 x 1.5 hardware)

This line is not pre-bent for a specific chassis. It’s designed as a universal, cut-and-bend solution for custom builds, compound turbo conversions, dual CP3 kits, and other high pressure fuel system projects where you want clean routing and OEM-level integrity.

Cross-Reference / Related Fleece Products on CPP Diesel

• FLEECE FPE-34200-10 – 10 INCH HIGH PRESSURE FUEL LINE
• FLEECE FPE-34200-12 – 12 INCH HIGH PRESSURE FUEL LINE
• FLEECE FPE-34200-18 – 18 INCH HIGH PRESSURE FUEL LINE
• FLEECE FPE-34200-20 – 20 INCH HIGH PRESSURE FUEL LINE
• FLEECE FPE-CP3-FEED – 1/2 INCH CP3 FEED FITTING
• FLEECE FPE-CP3-RTRN – 3/8 INCH CP3 RETURN FITTING

The FPE-34200-24 is a universal high pressure line stick used in custom common-rail and CP3 fuel system plumbing. Builders use it to create feed or return lines, “bridge” lines in dual CP3 setups, or to clean up factory routing with better line placement.

No. It ships straight as a 24" universal stick so you can bend it to your exact routing. This gives you total control over clearance, aesthetics, and service access.

For best results and to avoid kinks, use a quality hand tubing bender sized for 8mm line. This produces smooth, professional bends and keeps internal flow area intact.

Any high pressure fuel system that uses 8mm x 3.5mm hard line with M14 x 1.5 nuts. It’s commonly used on modern common-rail diesel platforms including popular Cummins, Duramax, and Power Stroke builds, as well as custom race or swap applications.

Yes. As with many metal automotive components, this product carries a California Proposition 65 warning for Cancer and Reproductive Harm. See the Specifications table for the full statement.

Specifications for FLEECE FPE-34200-24