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Ignition Switch
By OE Match
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche Carrera GT 2003-06
Fits:
Porsche 986 Boxster 2004>>
Porsche 996 2004>>
Porsche 996 Turbo 2004>>
Porsche 996 GT3 2004>>
Porsche Carrera GT 2004>
Click 'Zoom in' for large parts diagram.
Diagram ref no 22
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
4B0905849
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- 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 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
The OE MATCH Ignition Starter Switch is a electrical component designed to control the vehicle’s ignition and starter system. Installed behind the ignition lock barrel, the switch transfers the driver’s key input into electrical signals that activate the vehicle’s accessory circuits, ignition system, and starter motor.
Fits:
- Porsche Boxster 986 2.5L 1997-99
- 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 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Diagram Ref No 22
This OE MATCH ignition starter switch is engineered to provide reliable electrical contact, smooth operation, and direct-fit compatibility with the original wiring system. It plays a vital role in vehicle starting, power distribution, and overall electrical system functionality.
What This Product Does:
- Activates the vehicle ignition system when the key is turned
- Controls power delivery to accessory and ignition circuits
- Engages the starter motor to start the engine
- Distributes electrical power to key vehicle systems
- Works in conjunction with the ignition lock assembly
- Ensures reliable vehicle starting and operation
Symptoms Of Wear Or Failure:
- Engine fails to crank when the key is turned
- Intermittent starting problems
- Loss of power to ignition or accessory circuits
- Dashboard warning lights behaving erratically
- Key turning normally but no starter engagement
- Vehicle stalling due to ignition power interruption
- Electrical accessories failing to operate correctly
- Burnt contacts causing inconsistent electrical connections
Why Replacement Matters:
- Restores dependable engine starting functionality
- Ensures proper power distribution to ignition and accessory systems
- Prevents intermittent starting and electrical faults
- Maintains consistent communication between the key and vehicle systems
- Reduces the risk of unexpected breakdowns
- Supports safe and reliable vehicle operation
- Provides OE-style fitment and performance
- Helps preserve the integrity of the vehicle’s electrical and starting systems
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
4A0905849B
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- 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 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Ignition Problem Symptoms:
- Car won't start
- Tough to start
- Key gets stuck in ignition
- Key sticking in tumbler
Fits: RHD or LHD CARS
Fits:
Porsche Boxster 986
Porsche 996 upto 2004
Diagram Ref No. 20
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99634701707
The product you are viewing cross references to these numbers
OEMatch Ignition Switch — Fit, Function, Confidence
Ignition switches control the electrical stages required to start and run a Porsche. This collection covers mechanical and electronic ignition switches, barrels and lock sets chosen for Porsche models to restore starter and accessory power and to reduce intermittent electrical faults caused by worn contacts or cylinders.
Available Types
- Mechanical ignition barrels and key cylinders
- Electronic start switches and sensor-integrated modules
- Ignition lock sets and housings
- Replacement tumblers and barrels
Understanding OEMatch Ignition Switch
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original ignition switch. OE (Original Equipment) refers to parts matching original specifications for the ignition switch and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM ignition switches engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
The ignition switch routes power through accessory, on and start positions to feed systems such as the starter motor, fuel pump and dashboard electronics. In modern Porsche models the switch may also interact with immobiliser systems or electronic control modules, so correct electrical and mechanical interfaces are important for reliable operation.
Benefits Include
- Restored starter operation and consistent engine cranking
- Elimination of intermittent accessory and instrument faults
- Correct power sequencing for electrical systems
Why Ignition Switch Wear and Fail
- Worn electrical contacts leading to intermittent or no power
- Key cylinder wear causing stiffness or sticking when turning
- Corrosion or heat-related internal short circuits
The Importance of Replacing with OEMatch Ignition Switch
Replacing a worn ignition switch reduces the risk of a breakdown and restores predictable electrical control. Choosing an OEMatch ignition switch helps retain correct mounting and electrical interfaces for Porsche models while addressing common causes of failure.
Advantages
- Designed to match original-spec dimensions for consistent operation
- Compatible with original mounting points and electrical interfaces where specified
- Options for mechanical and electronic assemblies to suit different model requirements
Support & Advice
These items affect safety-critical systems. Installation should be carried out by a qualified technician following model-specific procedures and torque settings. Use calibrated tools and new fasteners where specified.
