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- 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 OE Match speedometer reset knob is a replacement interior control used to reset the trip odometer on the speedometer in classic Porsche 911 models from 1965 to 1977. This small dashboard component allows the driver to manually reset the trip counter to zero for tracking distance during journeys. Please note Original Porsche part is no longer available.
Sold individually
Fits:
Porsche 911 1965 - 1977
Diagram ref no 3
The speedometer reset knob is a small knurled adjustment knob located on or near the speedometer gauge in early Porsche 911 dashboards. It connects to the trip odometer mechanism and allows the driver to manually reset the distance counter.
The OE Match Speedometer reset knob is designed to replicate the original Porsche component in appearance, size and fitment. It is particularly useful because the original Porsche part is no longer available, making OE-style replacements an important solution for maintenance and restoration of classic models.
The knob allows the driver to reset the trip odometer (day trip counter) to zero. This feature helps drivers track individual journey distances, fuel consumption or maintenance intervals.
Replacing a worn or missing reset knob restores full functionality to the instrument cluster and ensures the trip counter can be operated easily and reliably.
Function
• Trip Odometer Reset: Allows manual reset of the speedometer trip counter
• Instrument Control: Connects to the internal odometer reset mechanism
• Driver Convenience: Enables tracking of trip distance and mileage
• Restoration Fit: OE-style design maintains authentic interior appearance
Over time the small reset knob can become worn, cracked or lost during instrument servicing. Without the knob, the trip odometer cannot be reset easily. Installing a new OE Match replacement restores full functionality of the speedometer system and preserves the authentic interior appearance of classic Porsche models.
Consider replacing the reset knob if you notice:
• Missing or broken speedometer reset knob
• Difficulty resetting the trip odometer
• Worn or damaged instrument control
• During dashboard or instrument cluster restoration
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90174119122
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
The OE Match Speedometer Cable, Inner & Outer (2750mm) is a premium-quality replacement cable assembly designed to transmit rotational drive from the transmission to the mechanical speedometer on compatible classic Porsche models. Manufactured to OE specifications for fit, length and durability, this complete cable assembly includes both the inner drive cable and outer protective casing, ensuring accurate speedometer operation and smooth, reliable performance.
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 5
Manufactured from high-strength steel with a precision-wound inner cable and a durable, flexible outer sheath, the cable is engineered to resist wear, vibration and corrosion while maintaining smooth operation over its full 2750mm length. It provides factory-style fitment and is ideal for restoring accurate vehicle speed readings during repairs or restoration projects.
What This Product Does:
- Transmits rotational drive from the gearbox to the mechanical speedometer.
- Provides accurate vehicle speed readings.
- Includes both the inner cable and outer protective casing.
- Ensures smooth, low-friction operation of the speedometer.
- Maintains reliable communication between the transmission and instrument cluster.
- Helps preserve accurate mileage recording on mechanical systems.
- Restores factory-style operation of the speedometer.
- Forms an essential part of the vehicle's mechanical speedometer system.
Symptoms Of Wear Or Failure:
- Speedometer needle fluctuating or bouncing.
- Complete loss of speedometer operation.
- Clicking, squealing or whining noises behind the dashboard.
- Intermittent speed readings.
- Stiff or seized cable movement.
- Broken inner drive cable.
- Damaged or split outer cable casing.
- Inaccurate vehicle speed indication.
- Odometer failing to record mileage correctly (where mechanically driven).
- Visible corrosion or wear on the cable assembly.
Why Replacement Matters:
- The speedometer cable operates continuously while the vehicle is moving and is subjected to constant rotation, vibration and environmental exposure. Over time, the inner cable can wear, stretch or break, while the outer casing may crack or allow moisture and dirt to enter, increasing friction and accelerating wear.
- A faulty speedometer cable can lead to inaccurate speed readings, erratic needle movement or complete loss of speedometer and odometer function. This can affect driver awareness, vehicle legality and the accuracy of recorded mileage.
- Replacing the complete inner and outer cable assembly restores smooth, accurate speedometer operation and dependable performance. The OE Match replacement provides factory-correct length, precise fitment and durable construction, helping preserve the authenticity, functionality and driving experience of your classic Porsche.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90174111101
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Reconditioned Replacement Speedo.
The OE Match Reconditioned Replacement Speedometer is a professionally reconditioned instrument designed to restore accurate vehicle speed indication and maintain the authentic appearance of the dashboard on compatible classic Porsche models. Rebuilt to OE specifications for fit, function and reliability, this replacement speedometer retains the original factory styling while providing dependable performance for everyday driving and concours-level restorations.
Fits:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Each unit is carefully reconditioned using high-quality replacement components where required. Internal mechanisms are inspected, cleaned, calibrated and tested to ensure accurate speed readings and smooth needle operation. The housing, dial face and internal assemblies are refurbished to deliver a factory-style appearance and direct OE-style installation, making this the ideal solution for replacing worn, damaged or inaccurate original speedometers.
What This Product Does:
- Displays accurate vehicle speed.
- Allows the driver to monitor road speed safely.
- Restores reliable speedometer operation.
- Maintains the original dashboard appearance.
- Provides smooth and accurate needle movement.
- Supports compliance with road speed regulations.
- Provides direct OE-style fitment.
- Forms an essential part of the vehicle's instrument cluster.
Symptoms Of Wear Or Failure:
- Inaccurate speed readings.
- Speedometer needle fluctuating or bouncing.
- Complete loss of speed indication.
- Sticking or erratic needle movement.
- Internal mechanical noise from the instrument.
- Odometer or trip meter failing to operate correctly.
- Clouded or damaged instrument lens.
- Faded or deteriorated dial face.
- Intermittent speedometer operation.
- Reduced dashboard originality due to damaged instruments.
Why Replacement Matters:
- The speedometer is one of the most frequently viewed instruments in the vehicle and plays a vital role in safe and legal driving. Over time, internal gears, bearings, springs and other precision components can wear, while age, vibration and heat may affect calibration and reliability.
- A faulty speedometer can provide inaccurate speed information, making it difficult to judge road speed accurately and potentially leading to unsafe driving or speeding offences. Worn instruments can also detract from the appearance and value of a classic Porsche, particularly during restoration.
- Replacing a worn or damaged speedometer with an OE Match professionally reconditioned unit restores accurate speed indication, smooth operation and the authentic factory appearance of the dashboard. Rebuilt to OE standards and carefully tested for performance, this replacement speedometer provides dependable reliability while preserving the originality and character of your Porsche.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91164150100
The product you are viewing cross references to these numbers
PLEASE NOTE:
- Used parts need to be sent to us within 30 days from the date of the invoice. Returned items outside this window may be sent back to you as we work on strict return windows with our suppliers.
- The surcharge for this reconditioned part will be refunded when the exchange unit is received and approved by us and the relevant manufacturer.
- Please note, surcharge refunds often take an average of 6 to 8 weeks to be approved by the manufacturer.
- Acceptance of the exchange part is at the manufacturer's discretion, based on the part being fit for reconditioning.
- All surcharges and exchanges are subject to our terms and conditions.
- 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
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
Related, superseded, cross reference or alternative numbers for comparison.
90174111201
The product you are viewing cross references to these numbers
- 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
Internal Odometer Speedometer Gear 10 Tooth
Restore accurate odometer operation with this OE Match 10
Tooth Internal Odometer Speedometer Gear. Featuring a 10-tooth gear with the correct helical angle,
this replacement gear fits inside the speedometer housing and replaces worn or
damaged original components responsible for driving the odometer mechanism.
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
A common cause of odometer failure on classic Porsche VDO speedometers is a deteriorated or damaged internal drive gear. Over time, the original gear can become brittle with age, causing the teeth to crack, strip or break away. When this happens, the speedometer needle may continue to display vehicle speed correctly, while the odometer and trip meter stop recording mileage.
Replacing the failed gear restores the mechanical drive to the odometer, allowing both the main odometer and trip counter to function correctly once again.
Please note: The speedometer must be disassembled to identify the correct gear type and tooth count for your vehicle before ordering. Porsche used several different internal gear configurations throughout production, so visual inspection is essential.
This replacement gear does not include the metal shaft. It is designed to replace only the plastic drive gear and should be installed onto the existing shaft or as part of a professional speedometer rebuild.
Key Features
- Replacement 10-tooth internal odometer drive gear
- Correct helical tooth profile
- Fits inside the speedometer housing
- Restores odometer and trip meter operation
- Ideal for repairing worn or broken original gears
- Metal shaft not included
- Speedometer must be opened to confirm the correct gear style and tooth count before purchase
Porsche 911 Odometer & Speedometer Repair Parts
The mechanical VDO instruments fitted to early Porsche 911 models are renowned for their quality and longevity, but after decades of service the small internal plastic gears often become brittle and fail. Fortunately, replacing the damaged gear is usually all that's required to restore full odometer functionality without replacing the complete speedometer.
This OE Match replacement gear provides an economical solution for instrument repairs while preserving the originality of your vehicle's dashboard and gauges.
Common Symptoms of a Failed Odometer Gear
- Speedometer needle works normally
- Odometer has stopped recording mileage
- Trip meter no longer advances
- Clicking or slipping sounds from inside the speedometer
- Broken plastic gear teeth discovered during instrument inspection
Because several gear variations were fitted during production, always dismantle the speedometer and confirm the tooth count and gear profile before ordering.