FLEECE FPE-34200-11 11 INCH HIGH PRESSURE FUEL LINE 8MM X 3.5MM LINE M14 X 1.5 NUTS

Fabricators, engine builders, and common-rail tuners: the FLEECE FPE-34200-11 11 INCH HIGH PRESSURE FUEL LINE gives you a straight, OEM-quality hard line that’s ready for clean bends and leak-free high-pressure service. With 8mm x 3.5mm tubing and M14 x 1.5 nuts on both ends, this 11" stick is perfect for custom CP3, rail, and injector routing on modern diesel builds where precise fuel delivery and reliability matter. Fleece FPE-34200-11, 11 inch high pressure fuel line, 8mm x 3.5mm hard line, M14x1.5 nuts, common rail diesel fuel line, Fleece Performance Engineering, CPP Diesel, Cummins fuel line upgrade, universal high pressure fuel plumbing

Why this Fleece high pressure line works

• OEM-grade steel construction designed for true high-pressure common-rail service
• Straight 11" blank that’s easy to hand-bend for clean, professional routing
• 8mm x 3.5mm tube with M14 x 1.5 nuts for common CP3/rail/injector interfaces
• Perfect for custom compounds, service repairs, or re-plumbing cluttered bays
• Backed by Fleece Performance Engineering quality and CPP Diesel support

Fitment / Use Cases

Type: Universal high-pressure hard line for diesel/common-rail applications
Dimensions: 11" length; 8mm x 3.5mm tube; M14 x 1.5 nuts on both ends
Typical Uses: Custom CP3 to rail plumbing, injector line re-routes, service replacement for damaged lines, compound turbo layouts, and clean engine bay plumbing where 8mm tube & M14 x 1.5 seats are required.
Fuel Type: Diesel / high-pressure common-rail systems

Cross-Reference / Related Fleece Items (CPP Diesel only)

• FLEECE FPE-34200-7 — 7" High Pressure Fuel Line
• FLEECE FPE-34200-10 — 10" High Pressure Fuel Line
• FLEECE FPE-34200-12 — 12" High Pressure Fuel Line
• FLEECE FPE-34200-13 — 13" High Pressure Fuel Line
• FLEECE FPE-34200-14 — 14" High Pressure Fuel Line

It is a universal high-pressure hard line. As long as your system uses 8mm x 3.5mm tubing with M14 x 1.5 seats, you can bend and route it for custom common-rail plumbing. Always verify end-seat compatibility before use.

Yes. Use a quality 8mm tubing bender to form smooth radii and avoid kinks. Do not crush or flatten the tube, and keep adequate radius to maintain internal cross-section and seat integrity.

No tuning is required for hard-line changes alone. This line simply restores or improves your high-pressure plumbing. Always leak-check the system and verify rail pressure and operation after any fuel-system work.

Builders often use it on modern common-rail diesel platforms (including 6.7L Cummins and similar systems) where 8mm tubing and M14 x 1.5 fittings are standard, especially for custom single/compound turbo builds or when replacing damaged factory lines.

Yes. This product includes a California Proposition 65 warning for Cancer and Reproductive Harm. See the Specifications table below for the official link.

Specifications for FLEECE FPE-34200-11