Please wait… 
Please wait while we process your order,
do not press the back button… 
Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://design91.uk/images/schemaLogo.png https://design91.uk/images/schemaLogo.png +443456003478 https://design91.uk Facebook Instagram
Fuel overflow socket. Porsche 911 63-89 / 912 65-70 - 91120159300
91120159300/2
Product Information
Product Information
Fuel overflow socket.
This fuel overflow socket is a replacement for the original Porsche part 91120159300. It restores the proper connection between the filler sleeve and overflow / vent hose, ensuring safe fuel venting and leak-free performance.

Fits:
Porsche 911 1963 - 1989
Porsche 912 1965 - 1970

Diagram ref no 21

The overflow socket (or connector) attaches to the fuel filler neck / sleeve and provides a junction for the overflow / vent hose. It ensures that excess fuel or vapour is safely routed rather than spilling over or leaking onto chassis components. It maintains proper venting pressure and prevents fuel from escaping the system during refuelling or changes in tank pressure.

Location: Between the filler neck / sleeve and overflow / vent line in the fuel tank / filler assembly.

Why replacement matters
   With age, the original overflow socket can crack, become brittle, or warp, leading to fuel drips, leaks, or vapour escape.
    A failed connector can cause fuel to spill externally, create unpleasant odours, or allow venting to bypass the proper hose routing.
    Replacing ensures exact geometry, secure hose interface, durable fuel-resistant material, and a precise fit.

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Related, superseded, cross reference or alternative numbers for comparison.

91120159300
91120159300

The product you are viewing cross references to these numbers
Related products