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- 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
Fits:
Porsche 911 1972- 1977
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91164151000
The product you are viewing cross references to these numbers
- 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)
- 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 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 928 4.5L 1978-82
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
- Porsche 914 (1970-1976)
Price is each
Fits:
Porsche 356 - 1950 to 1965
Porsche 911 - 1965 to 1989
Porsche 928 - 1983 to 1995
Porsche 914 - 1970 to 1976
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90063110290
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
- 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 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Fits:
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Fits all instruments with 80mm diameter.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91155220500
The product you are viewing cross references to these numbers
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
The OE Match Speedo Scale for Conversion from Miles to Km/H is a high-quality replacement speedometer dial face designed to convert Porsche speedometer displays from miles per hour (MPH) to kilometres per hour (km/h). Manufactured to OE-style specifications for fit, appearance and clarity, this speedometer scale provides an authentic solution for imported vehicles, international market conversions and restoration projects.
Fits:
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Precision printed with factory-style graphics and markings, the scale is designed to integrate seamlessly into the original instrument cluster while maintaining the classic appearance of the dashboard. Ideal for owners seeking a metric speed display, it allows for improved speed readability and a more authentic presentation for vehicles operating in km/h regions.
What This Product Does:
- Converts the speedometer display from MPH to km/h.
- Provides clear and accurate speed reference markings.
- Maintains the original appearance of the instrument cluster.
- Supports vehicle import and market conversion projects.
- Enhances dashboard presentationand authenticity.
- Improves readability for drivers using metric speed measurements.
- Restores worn or damaged speedometer dial faces.
- Preserves factory-style instrument aesthetics.
Symptoms Of Wear Or Failure:
- Faded or discoloured speed markings.
- Peeling or lifting graphics.
- Scratched or damaged dial surfaces.
- Cracked or distorted scale face.
- Poor visibility of speed graduations.
- Illegible numbering or markings.
- Age-related deterioration of printed finishes.
- Incorrect speed display units following vehicle import.
- Reduced dashboard appearance and originality.
- Mismatched instrument presentation after restoration work.
Why Replacement Matters:
- Speedometer dial faces are exposed to years of sunlight, heat, dust and environmental ageing. Over time, markings can fade, surfaces can become damaged and visibility may deteriorate, reducing both functionality and visual appeal.
- For imported vehicles or restorations requiring a kilometre-per-hour display, replacing the original MPH scale provides a cleaner and more authentic solution than supplementary stickers or overlays. A properly fitted km/h scale improves readability and helps maintain a factory-style appearance within the instrument cluster.
- Replacing a worn or incorrect speedometer scale restores instrument clarity, enhances dashboard presentation and provides accurate speed reference markings in kilometres per hour. An OE Match replacement delivers high-quality printing, precise fitment and authentic styling, making it ideal for Porsche restorations, instrument refurbishment and metric conversions.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
930641508XX
The product you are viewing cross references to these numbers