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- 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 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
Fits:
Porsche 924 1976-85 LHD Cars ***not for (J)
Porsche 924S 1986-88 LHD Cars
Porsche 944 1982-85 LHD Cars
Click 'Zoom in' for large parts diagram.
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
142957801C
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
- 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)
The OE Match Rubber Sealing Ring, 115mm, Black is a premium-quality replacement instrument seal designed to provide a secure, weather-resistant seal between the tachometer and dashboard on compatible Porsche models. Manufactured to OE specifications for fit, flexibility and durability, this precision-moulded 115mm rubber sealing ring helps protect the instrument cluster from moisture, dust and vibration while ensuring the tachometer sits securely within the dashboard aperture.
Fits:
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1976 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1985 3.2L
- Porsche 911 1975-1976 3.0L Turbo (930)
- Porsche 911 1978-1985 3.3L Turbo (930)
Manufactured from high-quality automotive-grade rubber, the sealing ring is engineered to withstand prolonged exposure to UV light, heat, moisture and temperature fluctuations without hardening, shrinking or cracking. Precision-moulded to replicate the original Porsche dimensions, it provides direct OE-style installation, making it ideal for dashboard restorations, instrument refurbishment or replacing an aged or damaged original seal.
What This Product Does:
- Creates a weather-resistant seal around the tachometer.
- Cushions the instrument within the dashboard opening.
- Helps prevent water, dust and dirt from entering behind the dashboard.
- Reduces vibration transmitted to the instrument.
- Ensures a secure and factory-correct fit.
- Restores the original appearance of the dashboard installation.
- Replaces hardened, cracked or deteriorated original seals.
- Forms an essential part of the instrument mounting system.
Symptoms Of Wear Or Failure:
- Cracked, hardened or brittle rubber.
- Shrinking or deformation of the seal.
- Loose-fitting tachometer.
- Increased instrument vibration while driving.
- Gaps around the instrument bezel.
- Water or moisture entering behind the dashboard.
- Dust accumulation around the instrument housing.
- Difficulty securing the tachometer during installation.
- Deteriorated dashboard appearance.
- Perished or split rubber visible around the gauge.
Why Replacement Matters:
- The tachometer sealing ring is continually exposed to sunlight, heat, moisture and age, causing the rubber to gradually lose its flexibility and sealing properties. Over time, the material can harden, shrink or crack, reducing its ability to secure the instrument and protect the dashboard from the elements.
- A deteriorated sealing ring can allow water and dust to enter behind the dashboard, potentially affecting electrical connections and instrument reliability. It may also permit excessive movement of the tachometer, leading to unwanted vibration and detracting from the original appearance of the interior.
- Replacing the worn seal with the OE Match Rubber Sealing Ring restores the correct fit, weather protection and factory appearance of the instrument installation. Manufactured to OE standards using premium-quality rubber, it provides factory-style fitment, excellent durability and long-lasting sealing performance, making it an ideal choice for classic Porsche restoration and routine interior refurbishment.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91164190300
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.