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- Porsche 356B 1959-63
This Fuel Level Sender is an OE-style top-mounted fuel tank sending unit designed for Porsche 356B T5 models. It measures the fuel level inside the tank and sends the corresponding signal to the dashboard fuel gauge.
Fits:
Porsche 356B T5 1.6L 01/1959 - 08/1961
Diagram Ref No 37
Manufactured to OE specifications, it is engineered to provide accurate fuel level readings while maintaining factory-correct fitment and electrical compatibility.
Installed vertically into the top of the fuel tank, the sender unit uses a float-operated internal mechanism that rises and falls with the fuel level. As the float moves, the sender changes electrical resistance values, transmitting an accurate fuel level signal to the dashboard gauge. Proper operation is essential for reliable fuel level indication and preventing inaccurate readings or unexpected fuel shortages.
This component is ideal for restoration projects, fuel system refurbishment, or replacement of worn or faulty original sender units.
The fuel level sender monitors the fuel level inside the fuel tank and transmits an electrical signal to the dashboard fuel gauge. This allows the driver to accurately monitor remaining fuel while driving.
Function
• Measures fuel level within the fuel tank
• Sends electrical signal to dashboard fuel gauge
• Provides accurate fuel level indication
• Supports reliable fuel monitoring while driving
• Maintains compatibility with original gauge system
Over time, fuel level senders can wear internally due to corrosion, fuel contamination, electrical contact deterioration, or float failure. A faulty sender may cause inaccurate fuel readings, erratic gauge movement, or complete fuel gauge failure. Replacing the sender restores reliable fuel level indication and helps prevent unexpected fuel shortages or incorrect gauge readings.
When to replace
• Inaccurate or fluctuating fuel gauge readings
• Fuel gauge remains empty or full constantly
• Intermittent fuel gauge operation
• Corrosion or damage to sender unit
• During fuel tank restoration or fuel system servicing
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
64420180100
The product you are viewing cross references to these numbers
- 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
Fuel Tank Level Sender Seal
Maintain the integrity of your Porsche fuel system with this
OE Match Fuel Tank Level Sender Seal for Porsche 964 and Porsche 993 models.
This essential sealing gasket sits between the fuel tank and the fuel level
sender unit, creating a fuel-tight seal that prevents leaks, fuel vapour escape
and contamination from entering the tank.
Fits:
- 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
Diagram ref no 2
Although small and inexpensive, the fuel tank level sender seal plays a vital role in the safe and reliable operation of the fuel system. Over time, the original seal can harden, shrink or deteriorate due to constant exposure to fuel, heat and age, increasing the risk of fuel leaks and fuel odours inside the vehicle.
Manufactured to OE Match specifications, this replacement seal provides the correct fit and sealing performance for maintenance, fuel sender replacement and restoration projects.
What Does the Fuel Tank Level Sender Seal Do?
The fuel level sender seal creates a secure seal between the fuel tank and the fuel level sender assembly.
Its primary functions include:
- Preventing fuel leaks
- Sealing fuel vapours inside the tank
- Protecting against contamination
- Maintaining fuel system integrity
- Supporting accurate fuel sender operation
- Reducing fuel odours
- Helping maintain vehicle safety
Without a properly functioning seal, fuel and vapour can escape from the sender mounting area.
Why Do Fuel Tank Level Sender Seals Fail?
Fuel system seals operate in a harsh environment and are constantly exposed to fuel and temperature changes.
Common causes of failure include:
- Age-related hardening
- Fuel exposure
- Ethanol-blended fuel degradation
- Heat cycling
- Compression fatigue
- Shrinkage over time
- Incorrect installation
- Disturbance during sender removal
After many years of service, even an original seal that appears intact may no longer provide an effective seal.
Symptoms of a Failing Fuel Sender Seal
Common warning signs include:
- Fuel smell inside or around the vehicle
- Dampness around the sender unit
- Visible fuel seepage
- Fuel stains near the sender mounting area
- Vapour leaks
- Deteriorated or flattened seal
- Leaks after sender replacement
These symptoms should never be ignored, as fuel leaks present both safety and reliability concerns.
When Should the Fuel Tank Level Sender Seal Be Replaced?
Replacement is recommended when:
- Removing the fuel level sender
- Replacing the fuel sender unit
- Servicing the fuel tank
- Fuel odours are present
- Fuel leaks are discovered
- Carrying out preventative maintenance
- Restoring a Porsche 964 or 993
- The original seal shows signs of ageing
Most Porsche specialists recommend replacing the seal whenever the sender unit is removed.
Why Replacement Matters
Replacing an ageing sender seal helps protect the fuel system and vehicle.
Benefits include:
- Prevention of fuel leaks
- Reduced fuel vapour escape
- Improved safety
- Protection against contamination
- Elimination of fuel smells
- Reliable fuel system sealing
- Low-cost preventative maintenance
- Long-term peace of mind
For such an inexpensive component, replacing the seal can prevent far more costly repairs and fuel system issues.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970711540
The product you are viewing cross references to these numbers
- 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
Fits:
Porsche 964 1989-94
Click pictrue for large parts diagram.
Diagram Ref No 3A.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96464108100
The product you are viewing cross references to these numbers
- 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
Note: The fuel lever sender changes from the 4 pin connection to the new 2 pin connector so you will also need parts number 96464108100 Fuel Level Sender Control Unit.
Fits:
Porsche 964 3.3L-3.6L 1988 - 1994
Porsche 993 3.6L-3.8L 1993 - 1997
Diagram Ref No 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96464180103
The product you are viewing cross references to these numbers