Speedo cable input shaft. Porsche 911 1965-77  ❭  90174111201

Speedometer Cable Input Shaft – Length 2750mm 

Restore accurate speedometer operation with this Speedometer Cable Input Shaft. Measuring 2750mm in length, this precision-engineered speedometer cable delivers dependable performance, excellent fitment and smooth operation.

Fits:

• Porsche 911 1965-1968 2.0L / 912 SWB (F)
• Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera

The speedometer cable forms the vital mechanical connection between the transmission and the speedometer gauge, transmitting rotational movement to accurately display vehicle speed and record mileage. Over time, original cables can become worn, stretched or seized, resulting in inaccurate readings, fluctuating needles or complete speedometer failure.

Manufactured to OE specifications, this OE Match replacement restores reliable operation while maintaining the authentic mechanical speedometer system found on early air-cooled Porsche 911 models.

What Does the Speedometer Cable Do?

The speedometer cable transfers rotational movement from the transmission drive to the speedometer head, allowing the instrument to accurately display vehicle speed and operate the odometer.

Its functions include:

• Transmitting drive from the gearbox to the speedometer.
• Providing accurate vehicle speed readings.
• Operating the odometer and trip counter.
• Ensuring smooth speedometer needle movement.
• Supporting reliable instrument operation.
• Maintaining original factory mechanical speedometer functionality.

A correctly functioning speedometer cable is essential for safe driving and accurate vehicle mileage recording.

Why Replace the Speedometer Cable?

After decades of continuous use, the internal cable and outer casing can suffer from wear, corrosion and lack of lubrication.

Replacement is recommended if the cable shows signs of:

• Fraying or broken inner cable.
• Stiff or seized operation.
• Excessive wear. Kinked outer casing.
  
• Corrosion. Damaged end fittings.
  
• Noisy operation.
• Inaccurate speedometer readings.

Replacing a worn cable restores dependable speedometer performance while helping to protect the speedometer head from unnecessary wear.

Symptoms of a Worn or Failing Speedometer Cable

Common symptoms include:

• Speedometer needle bouncing or fluctuating.
• Complete loss of speedometer function.
• Squealing or clicking noises behind the dashboard.
• Inaccurate speed readings.
• Odometer not recording mileage correctly.
• Intermittent speedometer operation.
• Excessive vibration in the speedometer needle.

Replacing the cable at the first signs of wear helps prevent damage to the speedometer mechanism and ensures continued accuracy.

Benefits

Installing this OE Match Speedometer Cable Input Shaft provides:

• Restores accurate speedometer readings.
• Ensures smooth needle movement.
• Maintains correct odometer operation.
• Eliminates speedometer cable noise.
• Protects the speedometer head from excessive wear.
• Factory-quality fit and finish.
• Reliable long-term performance.
• Perfect for concours restorations and everyday driving.

Installation Recommendations

Professional installation is recommended, particularly during gearbox or instrument refurbishment.

While replacing the speedometer cable, it is advisable to inspect:

• Speedometer drive gear.
• Transmission drive fitting.
• Speedometer head.
• Dashboard instrument seals.
• Cable routing clips.
• Rubber grommets.
• Instrument illumination and wiring.

Ensure the cable is routed correctly with smooth bends and free from sharp kinks to maximise service life and maintain accurate operation.

Related reference numbers
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90174111201

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