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- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
The OE MATCH Oil Level Sender is a replacement component designed to restore accurate engine oil level monitoring on selected 1973 Porsche 911 S and Carrera 2.7 models.
Fits:- Porsche 911 S 1973 2.7L
- 911/53
- 911/63
- 911/83
- 911/88
Diagram Ref No 2
Manufactured to match the original equipment specifications, this oil level sender fits inside the engine's external oil tank and communicates the oil level to the dashboard-mounted oil level gauge.
The classic Porsche 911 uses a dry-sump lubrication system, in which engine oil is stored in a separate tank rather than solely in the engine sump. The oil level sender plays an important role in providing the driver with a visual indication of the quantity of oil present in this external reservoir.
The sender uses a float-operated mechanism to detect changes in the oil level. As the oil rises or falls, the float moves and changes the electrical resistance within the sender, allowing the dashboard gauge to display the corresponding oil level.
Over time, the original sender can deteriorate due to prolonged exposure to hot engine oil, temperature fluctuations, vibration and ageing electrical components. A worn or faulty sender may produce inaccurate, intermittent or completely unresponsive oil level readings.
Replacing a defective sender with an OE MATCH component helps restore reliable dashboard oil level indication, making it easier to monitor the lubrication system and maintain the correct engine oil quantity.
Ideal for classic Porsche servicing, oil tank refurbishment, dashboard instrument repairs and restoration projects, this oil level sender provides a practical original equipment-style replacement.
What This Product Does:The engine oil level sender is an electrical measuring component installed within the external oil tank of the Porsche dry-sump lubrication system.
Its primary functions include:
- Measures Engine Oil Level: Detects the level of engine oil within the external oil reservoir using a float-operated mechanism.
- Transmits Oil Level Information: Sends an electrical signal to the dashboard oil level gauge, allowing the driver to monitor the oil level.
- Supports Accurate Dashboard Readings: Helps provide reliable oil level information when the vehicle is operated under the correct checking conditions.
- Assists Routine Oil Maintenance: Allows the driver to observe changes in oil level and identify when further inspection or topping up may be required.
- Supports Correct Oil Quantity: Provides supplementary information to help avoid operating with an excessively low or high oil level.
- Maintains Original Instrument Functionality: Restores operation of the factory dashboard oil level gauge when the sender is responsible for a fault.
- Supports Engine Lubrication Monitoring: Helps the driver remain informed about the oil quantity in the engine's dry-sump system.
- Preserves Factory Specifications: Replaces the original sender while maintaining the vehicle's original oil tank and instrumentation arrangement.
Symptoms Of Wear Or Failure:
The oil level sender is continuously exposed to engine oil, heat and vibration. Over many years, its internal float mechanism and electrical components can deteriorate.
Common symptoms of a worn or faulty oil level sender include:
- Incorrect Oil Level Readings: The dashboard gauge displays an oil level that does not correspond with the actual level measured using the dipstick.
- Gauge Permanently Reading Empty: The oil level gauge remains at the minimum position even when the engine oil quantity is correct.
- Gauge Permanently Reading Full: The gauge remains at its maximum position regardless of the actual oil level.
- Erratic Gauge Movement: The oil level indicator fluctuates excessively or behaves unpredictably under the correct checking conditions.
- Intermittent Gauge Operation: The gauge occasionally works correctly before displaying an incorrect reading or stopping altogether.
- Sticking Float Mechanism: Internal deposits, wear or mechanical damage may prevent the float from moving freely.
- Worn Electrical Contacts: Deterioration of internal electrical components may produce inaccurate resistance values.
- Corroded Electrical Terminals: Moisture, age or contamination may affect the electrical connections between the sender and the dashboard gauge.
- Damaged Sender Wiring: Broken, loose or deteriorated wiring can interrupt the signal from the sender.
- Oil Leakage Around the Sender: A damaged or deteriorated mounting gasket may allow oil to seep from the sender installation point.
- Physical Damage: A bent float arm, damaged sender housing or incorrect previous installation may interfere with normal operation.
- Failure After Oil Tank Servicing: A sender that has been incorrectly refitted or damaged during maintenance may no longer provide accurate readings.
Why Replacement Matters:
Replacing a worn or faulty oil level sender is important for maintaining reliable engine oil level monitoring and preserving the correct operation of the vehicle's factory instrumentation.
Key Benefits of Replacement:
- Restores Accurate Oil Level Indication: Helps the dashboard gauge display the correct engine oil level when the original sender has failed.
- Improves Engine Oil Monitoring: Allows the driver to monitor the oil quantity within the external reservoir more confidently.
- Reduces Misleading Gauge Readings: Replaces defective float or electrical components responsible for incorrect readings.
- Supports Correct Oil Maintenance: Helps drivers make informed decisions when checking and maintaining engine oil levels.
- Reduces the Risk of Incorrect Oil Top-Ups: Accurate indication can help prevent unnecessary oil additions based on a faulty gauge.
- Maintains Dashboard Instrument Functionality: Restores operation of the original Porsche oil level gauge.
- Supports Long-Term Engine Care: Provides useful information for maintaining the correct oil quantity within the lubrication system.
- Original Equipment-Style Fitment: Designed to replace the factory sender without modifying the oil tank or wiring arrangement.
- Ideal for Classic Porsche Restoration: Helps restore original instrument operation and factory specification.
- Suitable for Oil Tank Refurbishment: Provides an opportunity to renew ageing oil monitoring components when the external oil tank is serviced.
- Cost-Effective Maintenance: Replacing a defective sender may avoid unnecessary replacement of other functioning dashboard or lubrication components.
A faulty oil level sender can create uncertainty when monitoring the engine's oil quantity.
An incorrectly low reading may encourage unnecessary oil additions, while an incorrectly high reading may conceal a genuine low-oil condition if the driver relies solely on the dashboard gauge.
Maintaining the correct oil quantity is particularly important on Porsche's air-cooled engines, where engine oil performs both lubrication and heat-management functions.
Replacing a defective sender with an OE MATCH component helps restore confidence in the oil level gauge and maintain the vehicle's original lubrication monitoring system.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91164154100
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