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- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Internal Odometer Speedometer Gear - Multiple Tooth Count Options
Restore the operation of your classic Porsche speedometer with this OE Match Internal Odometer Speedometer Gear. Manufactured to replace the original internal plastic drive gear, this component restores the mechanical drive to the odometer and trip meter when the original gear has become worn, brittle or broken.
The internal odometer gear is housed within the speedometer and transfers drive from the speedometer mechanism to the odometer assembly. Over time, the original plastic gear naturally deteriorates through age and repeated use, often causing the odometer and trip meter to stop recording mileage while the speedometer needle continues to function normally.
Replacing the failed gear is a cost-effective repair that allows you to retain the original speedometer while restoring accurate mileage recording.
Choosing the Correct Gear
There are multiple tooth count options fitted to speedometers. Before ordering, the speedometer must be opened so the original gear can be inspected and the correct tooth count confirmed.
The replacement gear consists of:
- Outer
gear: Always 20 teeth
- Inner gear: Available with 21 to 32 teeth, depending on your speedometer.
If the original gear is too damaged to count accurately, count the teeth on the mating gear instead. Use the following guide to determine the correct replacement:
Teeth on Mating Gear - Required Gear
49 teeth 20 x 21
48 teeth 20 x 22
47 teeth 20 x 23
41 teeth 20 x 29
40 teeth 20 x 30
38 teeth 20 x 32
Please Note:
The speedometer must be dismantled to confirm both the correct gear
style and tooth count before ordering. Ordering without verifying the existing
gear may result in purchasing the incorrect replacement.
Key Features
- Restores odometer and trip meter operation
- Direct replacement for worn or broken internal plastic gears
- Multiple inner tooth count options available
- Outer gear always features 20 teeth
- Cost-effective alternative to replacing the complete speedometer
- Ideal for instrument restoration and repair
The original instruments fitted to early Porsche models are built to last, but one of the few components that commonly fails is the small internal plastic odometer drive gear. Heat, age and decades of continuous operation eventually make the original material brittle, causing the gear teeth to crack or strip.
Fortunately, replacing the damaged gear restores normal operation while allowing you to retain your original factory instrument.
Common Symptoms of a Failed Odometer Gear
- Speedometer needle operates normally
- Odometer has stopped recording mileage
- Trip meter no longer advances
- Intermittent odometer operation
- Broken or cracked plastic gear inside the speedometer
Because Porsche used several different gear ratios throughout production, identifying the correct gear before ordering is essential for a successful repair.
- 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.
PLEASE NOTE:
- 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.
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
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 914 (1970-1976)
This Rubber Sealing Ring is an OE-style 100mm dashboard instrument sealing ring designed for Porsche 911 models from 1969 to 1985. It fits around the speedometer and combination gauge housings, helping secure the instruments within the dashboard while reducing vibration and creating a clean protective seal.
Fits:
Porsche 911 2.2L-3.2L 08/1969 - 07/1984
Porsche 914 1.7L-2.0L 01/1969 - 02/1976
Installed around the outer circumference of the dashboard instrument housing, the sealing ring acts as both a retaining cushion and protective gasket between the gauge body and dashboard opening. It helps hold the instrument firmly in place while reducing vibration, rattling, and movement during driving. The seal also creates a neat factory-style finish around the instrument edge for an authentic dashboard appearance.
The rubber sealing ring cushions and secures the dashboard gauge within the dashboard opening while reducing vibration and providing a clean sealing edge around the instrument housing.
Function
• Secures dashboard gauges within instrument panel
• Reduces vibration and instrument rattling
• Cushions gauge housing against dashboard trim
• Creates clean sealing edge around instrument
• Restores factory dashboard appearance and fitment
Dashboard instrument seals deteriorate over time due to heat, UV exposure, and compression ageing. Hardened or flattened seals can allow gauges to loosen within the dashboard, causing rattling, vibration, and poor dashboard appearance. Replacing worn sealing rings restores secure instrument mounting and factory-style fitment.
When to replace
• Loose or rattling dashboard gauges
• Cracked or hardened rubber seal
• Visible gaps around instrument housing
• During dashboard restoration or instrument refurbishment
• During gauge removal or dashboard servicing
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91164190200
The product you are viewing cross references to these numbers