Angled Drive for tacho / Rev Counter Drive shaft. Porsche 911 01/1963-08/1973  ❭  91131802900

Angled Drive For Tacho / Rev Counter Drive Shaft.
The OE Match Angled Drive for Tacho / Rev Counter Drive Shaft is a premium-quality replacement mechanical instrument drive component designed to transmit rotational movement from the engine to the tachometer (rev counter) on compatible classic Porsche models. Manufactured to OE specifications for fit, accuracy and durability, this angled drive ensures reliable operation of the mechanical rev counter, allowing accurate engine speed readings while maintaining the original factory instrumentation.  

Fits:

• Porsche 911 1965-1968 2.0L / 912 SWB (F)
• Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)  

Diagram Ref No 20

Manufactured from high-quality precision-machined steel with durable internal gears and bearings, the angled drive is engineered to withstand continuous rotational loads, engine vibration and prolonged operation. Precision-built for direct OE-style installation, it provides smooth, accurate drive to the tachometer cable or drive shaft, making it an ideal replacement for worn, damaged or seized original units during restoration or instrument repairs.  

What This Product Does:

• Transfers rotational drive from the engine to the mechanical tachometer.
• Provides accurate engine speed (RPM) readings.
• Changes the direction of drive through a precision-machined angled gearbox.
• Supports reliable operation of the rev counter.
• Maintains factory instrument accuracy.
• Ensures smooth transmission of mechanical drive.
• Restores OE-style functionality of the tachometer system.
• Forms an essential part of the mechanical rev counter drive system.

Symptoms Of Wear Or Failure:

• Inoperative tachometer or rev counter.
• Erratic or fluctuating RPM readings.
• No movement of the rev counter needle.
• Clicking, grinding or whining noises from the drive.
• Seized or stiff drive mechanism.
• Excessive wear in the internal gears.
• Oil leaks from the drive assembly where applicable.
• Damaged or worn drive shaft connection.
• Inconsistent engine speed indication.
• Reduced reliability of the instrument system.

Why Replacement Matters:

• The angled drive operates continuously whenever the engine is running, transmitting rotational movement through precision gears to the mechanical tachometer. Over time, normal wear, insufficient lubrication, contamination or age can cause the internal gears and bearings to wear or seize, resulting in inaccurate or complete loss of tachometer operation.
• A faulty angled drive can prevent the driver from accurately monitoring engine speed, increasing the risk of over-revving the engine and reducing confidence during spirited driving or gear changes. Continued use of a worn drive may also damage the tachometer cable or associated instrument components.
• Replacing a worn or damaged angled drive restores accurate rev counter operation and preserves the originality of the vehicle's mechanical instrumentation. The OE Match replacement provides factory-style fitment, precision-engineered internal components and long-lasting durability, making it the ideal solution for Porsche restoration, instrument repair and preventative maintenance.

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91131802900

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