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Instruments
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83

Fits:
Porsche 928 (1978 - 1980)
Porsche 928 S (1980 - 1980)
Click 'Zoom in' for large parts diagram.
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92864196100
The product you are viewing cross references to these numbers
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Gauge Cluster Printed Circuit Replacement.
The LutzAuto Instrument Cluster Printed Circuit Board Replacement is a precision-engineered solution designed to restore reliable electrical function to the Porsche 928 instrument cluster used on later production models. This component replaces the original factory flexible printed circuit foil, which is a well-known weak point on aging 928 dashboards.
Over time, the original flex circuit becomes brittle due to heat exposure, material fatigue, and repeated removal during servicing. Cracks, broken traces, and poor conductivity lead to erratic gauges, failed warning lights, and unreliable cluster illumination. Repairing the original foil is rarely durable or effective.
This replaces that fragile foil with a modern, rigid printed circuit board (PCB) manufactured to precise OEM dimensions and electrical specifications. This upgrade restores consistent power delivery and signal integrity to all gauges, warning indicators, and backlighting while dramatically improving long-term reliability.
Designed as a direct-fit replacement, the board installs into the original instrument cluster housing without permanent modification, preserving the factory appearance while eliminating a major source of electrical failure. This makes it an ideal solution for restorations, preventative maintenance, or repairing persistent dashboard issues on Porsche 928 models.
Fits:
What This Product Does:
What Is Included In The Kit:
- New Modern Circuit Boards
- New Indicator LED lights
- New Illumination LED lights
- Plugin Wiring and Zipties
Key Features:
- Modern, durable printed circuit board design
- Direct OEM-fit replacement
- Eliminates common Porsche 928 cluster electrical issues
- Ideal for restoration or preventative maintenance
- Designed and engineered by LutzAuto
Common Symptoms Of Failing Original Circuit:
- Intermittent or non-functional gauges
- Flickering or dead warning lights
- Cluster illumination cutting in and out
- Multiple gauges failing simultaneously
- Electrical faults that worsen with heat
Why Replacement Matters:
- Ensures accurate speed, RPM, temperature, and oil pressure readings
- Restores dependable warning light operation for safe driving
- Prevents repeated failures caused by brittle flex circuits
- Protects valuable original instrument cluster components
- Preserves vehicle value and drivability
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
LTZ-92864197301
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 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Fits:
Porsche 928 1982-86
Click 'Zoom in' for large parts diagram.
Diagram ref no 15
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92864198100
The product you are viewing cross references to these numbers
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Fits:
Porsche 928 1978-84
Click 'Zoom in' for large parts diagram.
Diagram ref no 14
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92860621000
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 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

Fits:
Porsche 911 1974-77 - Models with electronic speedometer.
Porsche 911 1978-89
Porsche 911 Turbo (930) 1975-77
Porsche 928 1078-91
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91566050901
The product you are viewing cross references to these numbers
Porsche Instruments & Gauge Clusters | Precision Monitoring for Performance and Reliability
Your Porsche’s instrument cluster is the heartbeat of the driving experience — delivering vital performance and engine data at a glance. From speedometers and tachometers to oil pressure and temperature gauges, these instruments combine precision engineering with timeless Porsche design. Over time, however, electrical faults, fading displays, or worn mechanisms can affect accuracy and reliability.
At Design911, we supply high-quality instrument clusters, gauges, and individual components designed to match or exceed original performance standards. Each part is meticulously engineered to ensure accurate readings, seamless integration, and long-term durability, restoring the driver-focused feel that defines every Porsche.
Whether you’re restoring a classic 911 cockpit or replacing a modern digital cluster, our range provides precision, authenticity, and performance you can trust.
What Do Porsche Instruments Do?
Instrument clusters and gauges allow drivers to monitor essential performance metrics, helping maintain control and awareness in all driving conditions.
Core Functions:
- Display vehicle speed, RPM, fuel level, oil pressure, and temperature.
- Provide real-time engine and system monitoring.
- Integrate warning lights and indicators for safety and diagnostics.
- Maintain Porsche’s signature driver-focused layout.
- Enhance cabin aesthetics with precision-crafted design and finishes.
A properly functioning instrument cluster ensures both performance accuracy and a refined interior presentation.
Why Do Instruments Wear or Fail?
Even high-precision instruments are subject to wear, ageing, and electrical issues — especially in classic and high-mileage Porsche models.
Common Causes of Failure Include:
- Faulty sensors or electrical connections causing inaccurate readings.
- Dimming or failed backlighting and displays.
- Internal gear or stepper motor wear in analogue gauges.
- Faded dial faces or cracked lenses from UV exposure.
- Moisture ingress causing corrosion or display malfunction.
When these issues occur, inaccurate readings or unresponsive
gauges can compromise both safety and driving confidence.
Why Replace or Restore
Your Porsche Instruments?
Replacing or refurbishing your Porsche’s instruments ensures accurate performance monitoring and preserves interior aesthetics. High-quality replacements restore full functionality while maintaining the classic design and illumination that Porsche is renowned for.
Key Benefits:
- Restores accurate and reliable gauge readings.
- Improves dashboard appearance and visibility.
- Prevents electrical faults and warning light errors.
- Compatible with Porsche 911, Boxster, Cayman, Panamera, Macan, Cayenne and more.
- Available for both analogue and digital instrument clusters.
- Ideal for classic restorations, interior refurbishments, and performance rebuilds.
A refreshed instrument cluster not only improves driving precision but also enhances the timeless beauty of your Porsche interior.
Highlights
- Precision-engineered Porsche instrument clusters and gauges.
- Available in analogue, digital, and hybrid configurations.
- Direct-fit solutions for restoration or replacement.
- High-visibility illumination and durable materials.
- Suitable for both classic and modern Porsche interiors.
- Designed for performance reliability and authentic aesthetics.