Mass air flow sensor, This part number supersedes to 98660612502 Genuine Porsche part 98660612501

Lambda oxygen sensor.



Fits
Porsche Boxster 986 >>2002
Before or After Cat fits both

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Related, superseded, cross reference or alternative numbers for comparison.

98660612601

The product you are viewing cross references to these numbers

Air mass / flow sensor.



Fits:
Porsche Boxster 2.7L from
Chassis number 98YS6 02146>>

Porsche Boxster 3.2L from
Chassis number 98YS6 42001>>

Porsche 996 3.6cc 2002>>
Porsche 997 C2 / C4 3.6L, 3.8L
Porsche 997 MKII 2009>>

A mass airflow sensor is used to determine the mass of air entering an electronically fuel-injected engine. The air mass information is necessary for the engine control unit (ECU) to calculate and deliver the correct fuel mass to the engine. Air changes its density as it expands and contracts with temperature and pressure. In automotive applications, air density varies with the ambient temperature and altitude, and this is an ideal application for a mass sensor

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Related, superseded, cross reference or alternative numbers for comparison.

98660612502

The product you are viewing cross references to these numbers

Impulse / speed sensor. Crankshaft sensor.



Fits:
Porsche 986 Boxster >>2002
Porsche 996 C2 / C4 >>2002
Porsche 996 Turbo >>2002 (Tiptronic)

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Related, superseded, cross reference or alternative numbers for comparison.

98660611202

The product you are viewing cross references to these numbers

Impulse / speed sensor. Crankshaft sensor.



Fits:
Porsche 986 Boxster 2003-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 996 Carrera 2003>>
Porsche 996 Turbo (Tiptronic Transmission)
Porsche 997 Carrera 2005-08
Porsche 997 Turbo 2007>> (Tiptronic Transmission)

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Related, superseded, cross reference or alternative numbers for comparison.

98660611204

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Throttle Body.
The OE Match Throttle Body is a high-quality replacement air intake component designed to regulate the volume of air entering the engine for precise fuel delivery and optimum engine performance. Manufactured to OE specifications for fit, airflow characteristics and durability, this throttle body ensures smooth throttle response, stable idle speed and efficient engine operation.  

Fits:

• Porsche Boxster 986 2.7L 1999-02
• Porsche Boxster S 986 3.2L 1999-02
• Porsche Boxster 986 2.7L 2003-04
• Porsche Boxster S 986 3.2L 2003-04
• Porsche Boxster 987 2.7L 2005-08/08
• Porsche Boxster 987 S 3.2/3.4L 2005-08/08
• Porsche 996 TURBO 2000-05
• Porsche Carrera GT 2003-06  

Diagram Ref No 1

Featuring a precision-machined throttle valve, durable housing and integrated electronic or mechanical control interfaces (depending on vehicle application), the throttle body accurately controls airflow based on accelerator pedal input and engine management system demands. Designed to withstand continuous operation in demanding engine bay conditions, it provides reliable performance and seamless compatibility with the vehicle's engine management system.  

What This Product Does:

• Regulates the amount of air entering the engine.
• Controls engine power output in response to throttle input.
• Supports accurate fuel and air mixture.
• Maintains stable idle speed.
• Improves throttle response and engine drivability.
• Helps optimise fuel economy and exhaust emissions.
• Communicates with the engine management system for precise airflow control.
• Forms a critical part of the engine intake and fuel management system.

Symptoms Of Wear Or Failure:

• Rough or unstable idle.
• Hesitation during acceleration.
• Poor throttle response.
• Engine warning light illumination.
• Reduced engine power or limp-home mode.
• Sticking or binding throttle valve.
• Fluctuating engine speed.
• Increased fuel consumption.
• Difficulty starting the engine.
• Diagnostic fault codes relating to the throttle control system.

Why Replacement Matters:

• The throttle body is continuously exposed to airflow, carbon deposits, oil vapours and engine heat. Over time, contamination can restrict throttle valve movement, while internal components or electronic actuators may wear or fail, affecting airflow control and engine performance.
• A faulty throttle body can lead to poor acceleration, unstable idle, increased fuel consumption and reduced overall drivability. In more severe cases, the engine management system may activate limp-home mode to protect the engine, significantly limiting vehicle performance.
• Replacing a worn or malfunctioning throttle body restores precise airflow control, improves engine response and helps ensure smooth, efficient operation. An OE Match replacement provides factory-style fitment, dependable performance and long-lasting durability, helping maintain the power, efficiency and driving experience expected from your Porsche.

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

98660511501

The product you are viewing cross references to these numbers

Lambda oxygen sensor.



Fits
Porsche Boxster 986 >>2002 USA Spec (AFTER Catalyst)

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.

98660612801

The product you are viewing cross references to these numbers

Lambda oxygen sensor.



Fits
Porsche Boxster 986 >>2002 USA Spec (BEFORE Catalyst)

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.

98660612701

The product you are viewing cross references to these numbers

Throttle body. Size: 68mm



Fits:
Porsche 986 Boxster 2.7L / S 3.2L 2000-04

Porsche 987 Boxster 2.7L / 3.2L 08/2004 - 07/2006
Engine codes M96.25 / M96.26

Porsche 996 Turbo 2001-05

Porsche Carrera GT 2004-06

Click 'Zoom in' for large parts diagram.
Diagram ref no 1.

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

98660511501

The product you are viewing cross references to these numbers

Lambda oxygen sensor.



Fits
Porsche Boxster 986 >>2002
Before or After Cat fits both

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.

98660612601

The product you are viewing cross references to these numbers