Fuel line in centre tunnel. Porsche 911 1969-73

Return fuel line in centre tunnel. 
Metal fuel line that runs the length of the centre tunnel.

Fits:
Porsche 911 E / 911S - 1969 to to 1971 (2 required per car)
Porsche 911T 1969 to 1969 (1 required per car)
Porsche 911 - 1972 to 1973 (1 required per car)

Diagram ref no 25 (for 911T, 911) / 18 (for 911E/S)

This metal fuel line provides reliable fuel-circuiting within the vehicle’s structure, directing fuel return or feed through the centre tunnel. It must maintain integrity under fuel pressure, vibration and heat, while resisting corrosion for long service life.

Over time, the original fuel lines in the centre tunnel can deteriorate due to vibration, fuel exposure, and age. This can lead to leaks, vapour loss, or safety risks. Replace the fuel line when:
 • Corrosion or rust is visible on the metal surface.
 • You notice fuel odour or damp spots near the tunnel area.
 • The line shows signs of wear, cracking, or deformation.
 • Performing a full restoration, engine rebuild, or fuel-system refresh.

Installing a high-quality new fuel line ensures proper routing, durable materials, and leak-free operation - restoring the safety and reliability of your Porsche’s fuel system.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

90110853101

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