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- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
Sold each - 2 per car. These are positioned before the catalytic converters
Fits:
Porsche Boxster 987 2.7ltr >>2007 (BEFORE catalytic converter)
Porsche Boxster S 987 3.2ltr >>2007 (BEFORE catalytic converter)
Porsche 997 GT3 2007-09 (BEFORE catalytic converter)
Function:
The Oxygen Sensor (also known as Lambda Sensor) is located in the exhaust manifold and measures the amount of unburned oxygen in your engine's exhaust. Based on the amount of oxygen, it sends a signal to your engine computer which then adjusts the air/fuel mixture for optimum engine performance and emission control.
Failure Symptoms:
• Excessive fuel consumption, a faulty oxygen sensor can waste 30% of your fuel.
• Driveability problems, such as engine surging or hesitation.
• High hydrocarbon emissions, failing an emissions inspection.
• The engine warning light may be on or service flag displayed.
• The ecu/computer stores a mixture-related fault code.
• When the oxygen sensor has stopped functioning completely, the catalytic converter may overheat and fail
Maintenance / Service:
• Test and/or replace every 30,000 miles.
• Perform periodic emission checks.
• Watch for service light.
• Vehicle manufacturers recommend periodic inspection and replacement of oxygen sensor.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98760612304
The product you are viewing cross references to these numbers
.jpg?width=197 "Lambda Oxygen Sensor, AFTER Catalytic Converter. Porsche 971.1 Panamera 2017-20 - 9A790626550")
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- Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
Restore accurate exhaust-gas monitoring and dependable emissions-system operation with this Porsche Lambda Oxygen Sensor. Designed for compatible Porsche applications, this sensor is positioned AFTER the catalytic converter, where it monitors the oxygen content of exhaust gases after they have passed through the catalyst.
Fits:
- Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-19
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-18
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-18
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-18
Diagram Ref No 18
Also known as an oxygen sensor, O2 sensor or lambda probe, the downstream sensor provides the engine control unit (ECU) with information that helps assess catalytic converter operation and overall emissions-system performance.
The ECU can compare readings from oxygen sensors positioned before and after the catalytic converter. A correctly functioning catalyst changes the characteristics of the exhaust gases passing through it, and the downstream sensor allows the vehicle to monitor whether this process is occurring as expected.
Lambda sensors operate in an extremely demanding environment, exposed to high exhaust temperatures, vibration, moisture, combustion deposits and repeated thermal cycling. Over time, the sensing element, internal heater, wiring or electrical connections can deteriorate.
Replacing a confirmed faulty sensor with the correct Porsche Lambda Oxygen Sensor 9A790626550 helps restore reliable downstream exhaust monitoring and accurate catalytic converter diagnostics.
What This Product Does:
- Measures oxygen content in the exhaust gases.
- Operates AFTER the catalytic converter.
- Sends exhaust oxygen information to the ECU.
- Helps monitor catalytic converter performance.
- Allows comparison with upstream lambda sensor readings.
- Supports emissions-system diagnostics.
- Helps detect abnormal catalytic converter behaviour.
- Provides feedback on downstream exhaust conditions.
- Supports reliable engine-management monitoring.
- Helps identify emissions-system faults.
- Works with the vehicle's wider exhaust and emissions-control system.
- Replaces a slow, contaminated or failed downstream oxygen sensor.
- Restores reliable catalyst-monitoring information when sensor failure is confirmed.
Symptoms Of Wear Or Failure:
- Check engine or engine-management warning light.
- Oxygen sensor-related diagnostic fault codes.
- Downstream lambda sensor fault codes.
- Catalyst-efficiency-related fault codes.
- Emissions-system warning messages.
- Slow oxygen sensor response.
- Implausible downstream sensor readings.
- Intermittent sensor signals.
- Sensor reading remaining unusually fixed.
- Vehicle failing an emissions test.
- Increased exhaust emissions.
- Sensor heater circuit fault.
- Open- or short-circuit sensor faults.
- Damaged sensor wiring.
- Heat-damaged wiring insulation.
- Corroded or damaged electrical connector.
- Physical damage to the sensor.
- Sensor seized into its exhaust mounting point.
Why Replacement Matters:
- The downstream oxygen sensor is an important part of the vehicle's emissions-monitoring system.
- While a before-catalyst sensor is generally more directly involved in air-fuel mixture control, the after-catalyst sensor primarily allows the ECU to monitor the behaviour and efficiency of the catalytic converter.
- If the downstream sensor becomes slow, inaccurate or completely inoperative, the ECU may no longer receive trustworthy information about exhaust conditions after the catalyst.
- Replacing a confirmed faulty Porsche Lambda Oxygen Sensor 9A790626550 restores dependable downstream exhaust information and allows the ECU to monitor catalytic converter operation correctly.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A790626550
The product you are viewing cross references to these numbers
- Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
Restore accurate exhaust monitoring and dependable emissions-system operation with this OE Match Lambda Oxygen Sensor. Designed for compatible Porsche applications, this sensor is installed AFTER the catalytic converter, where it monitors oxygen levels in the exhaust gases after they have passed through the catalyst.
Fits:
- Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-19
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-18
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-18
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-18
Diagram Ref No 18
Also known as an oxygen sensor, O2 sensor or lambda probe, the downstream lambda sensor provides important feedback to the engine control unit (ECU). Its primary role is to help the vehicle monitor the performance of the catalytic converter and identify abnormal exhaust or emissions-system behaviour.
The ECU can compare signals from sensors positioned before and after the catalytic converter. This information helps determine whether the catalyst is treating the exhaust gases as expected.
Operating directly in the exhaust system exposes the sensor to high temperatures, vibration, moisture, combustion deposits and repeated thermal cycling. With age, the sensing element can become contaminated or slow to respond, while the internal heater, electrical connector or wiring may also deteriorate.
This OE Match Lambda Oxygen Sensor provides a high-quality replacement for a slow, inaccurate or failed downstream sensor.
What This Product Does:
- Measures oxygen content in the exhaust gases.
- Operates AFTER the catalytic converter.
- Sends exhaust oxygen information to the ECU.
- Helps monitor catalytic converter performance.
- Allows comparison with upstream lambda sensor readings.
- Supports emissions-system diagnostics.
- Helps detect abnormal catalytic converter behaviour.
- Provides feedback on downstream exhaust conditions.
- Supports reliable engine-management monitoring.
- Helps identify emissions-system faults.
- Works with the vehicle's wider exhaust and emissions-control system.
- Replaces a slow, contaminated or failed downstream oxygen sensor.
- Restores reliable catalyst-monitoring information when sensor failure is confirmed.
Symptoms Of Wear Or Failure:
- Check engine or engine-management warning light.
- Oxygen sensor-related diagnostic fault codes.
- Downstream lambda sensor fault codes.
- Catalyst-efficiency-related fault codes.
- Emissions-system warning messages.
- Slow oxygen sensor response.
- Implausible downstream sensor readings.
- Intermittent sensor signals.
- Sensor reading remaining unusually fixed.
- Vehicle failing an emissions test.
- Increased exhaust emissions.
- Sensor heater circuit fault.
- Open- or short-circuit sensor faults.
- Damaged sensor wiring.
- Heat-damaged wiring insulation.
- Corroded or damaged electrical connector.
- Physical damage to the sensor.
- Sensor seized into its exhaust mounting point.
Why Replacement Matters:
- The downstream oxygen sensor is an important part of the vehicle's emissions-monitoring system.
- While a before-catalyst sensor is generally more directly involved in air-fuel mixture control, the after-catalyst sensor primarily allows the ECU to monitor the behaviour and efficiency of the catalytic converter.
- If the downstream sensor becomes slow, inaccurate or completely inoperative, the ECU may no longer receive trustworthy information about exhaust conditions after the catalyst.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A790626550
The product you are viewing cross references to these numbers