Fuel overflow socket. Porsche 911 63-89 / 912 65-70 - 91120159300
91120159300/2
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
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Related, superseded, cross reference or alternative numbers for comparison.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
The product you are viewing cross references to these numbers
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
Price: €10.38
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Vehicle Group
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Information
Fuel tank cap.
Fits:
Porsche 911 1980-89
Porsche 964 1989-94
Porsche 993 1994-98
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99320127100
The product you are viewing cross references to these numbers
Fits:
Porsche 911 1980-89
Porsche 964 1989-94
Porsche 993 1994-98
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99320127100
99320127100
The product you are viewing cross references to these numbers
Price: €110.55
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Vehicle Group
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Information
Filler Neck.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99320104302
The product you are viewing cross references to these numbers
Fits:
Porsche 964 1989-94
Porsche 993 1994-97
Click picture for large parts diagram.
Diagram Ref No 16.
Related reference numbers
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99320104302
96420104306
The product you are viewing cross references to these numbers
Price: €530.39
Orderable
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12 Month Warranty
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Vehicle Group
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Information
Fuel flap release cable.
Fits:
Porsche 964 1989-94
Porsche 993 1995-98
Click picture for large parts diagram.
Diagram Ref no 16.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99350433700
The product you are viewing cross references to these numbers
Fits:
Porsche 964 1989-94
Porsche 993 1995-98
Click picture for large parts diagram.
Diagram Ref no 16.
Related reference numbers
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99350433700
99350433700
99920900440
96450450700
96420167500
90155282200
The product you are viewing cross references to these numbers
Price: €15.96
In stock
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