Starter motor Ground Cable. Porsche 964  ❭  96461260901

12V Starter Motor - 9 Tooth

Restore dependable engine starting with this OE Match 12V Starter Motor featuring a 9-tooth pinion gear, designed specifically for the Porsche 911 (1965–1971). Manufactured to original equipment specifications, this premium replacement starter motor delivers reliable cranking power, smooth engagement with the flywheel ring gear and factory-quality fitment, ensuring your classic Porsche starts confidently every time.

Whether you're replacing a worn original unit or completing a full engine restoration, this OE Match starter motor offers the performance, durability and authenticity expected from a high-quality replacement component.

What Does the Starter Motor Do?

The starter motor is responsible for turning the engine during the starting process. When the ignition key is turned, the starter solenoid engages the 9-tooth pinion gear with the flywheel ring gear before the electric motor rotates the engine until combustion begins.

Its primary functions include:

• Rotating the engine during start-up.
• Engaging the flywheel ring gear via the starter pinion.
• Providing sufficient cranking speed for reliable ignition.
• Ensuring smooth and consistent engine starts.
• Supporting dependable cold and hot starting performance.
• Working in conjunction with the battery, ignition switch and charging system.

Without a correctly functioning starter motor, the engine cannot be cranked or started.

Why Do Starter Motors Fail?

Starter motors are subjected to high electrical loads and repeated engagement cycles throughout their service life. Common causes of failure include:

• Wear of the internal brushes.
• Worn bearings or bushings.
• Solenoid failure.
• Burnt or damaged armature windings.
• Worn or damaged 9-tooth pinion gear.
• Electrical corrosion on terminals.
• Heat soak from prolonged engine temperatures.
• High mileage and age-related wear.

As internal components wear, starting performance becomes slower and less reliable.

When Should the Starter Motor Be Replaced?

Replacement is recommended if you experience:

• Slow engine cranking.
• Clicking from the starter solenoid without engine rotation.
• Grinding noises during starting.
• Failure of the pinion gear to engage.
• Intermittent starting problems.
• Excessive current draw.
• Complete starter motor failure.

Many Porsche specialists recommend replacing ageing starter motors during engine or gearbox removal if wear is evident, as access is significantly easier.

Related reference numbers
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90160410203

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Starter motor protection cap.



Fits:
Porsche 356 /A/B/C 1950-65
Porsche 911/912/930 1965-89
Porsche 914 1970-76
Porsche 924 Turbo/GT 1976-85
Porsche 944 1985-91
Porsche 968 1992-95
Porsche 964 1989-94
Porsche 993 Carrera RS 1995-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 11

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

99965900650

The product you are viewing cross references to these numbers

Starter motor. This unit is sold as brand new. 9 Teeth

Fits:
Porsche 911 1965-86 901 / 915 Gearbox
Porsche 930 Turbo
Please check teeth quantity before ordering

Kilowatts: 1.00 kW
Teeth: 9
Voltage: 12 V
Weight: 3.80 kg

Powerlite offer a wide range of high torque gear reduction starter motors. The lightweight units offer increased cranking speeds and considerably more cranking power than original units, whilst drawing less current from the battery. The units are ideal for road competition applications, especially where engines have been tuned and adverse conditions require extra performance from the starter motor. All Powerlite starters are direct replacement for original units and require no modifications to the vehicle on which they are installed. The compact lightweight units are often easier to install than the original unit and units are modified where necessary to aid fitment.

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

91160410103

The product you are viewing cross references to these numbers