Instruments

Bulb 12V / 2W for Dash Board Instruments
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Fits:
Porsche 356 - 1950 to 1965
Porsche 911 - 1965 to 1989
Porsche 928 - 1983 to 1995
Porsche 914 - 1970 to 1976

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90063110290

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Bulb 12V / 2W for Dash Board Instruments

Price is each

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PCG631129A

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Replacement bulb holder for instrument cluster. 



Fits:
Porsche 928 1985-91 - x4 required in total
Porsche 944 1985-91 - Facelift models only, x6 required in total
Porsche 968 1992-95

Display unit for volts and oil pressure.



Fits:
Porsche 928 (1978 - 1980)
Porsche 928 S (1980 - 1980)

Click 'Zoom in' for large parts diagram.
Diagram ref no 5

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92864196100

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Gauge Cluster Printed Circuit Replacement.

The LutzAuto Gauge Cluster Printed Circuit Replacement Kit is a modern, high-quality solution designed to permanently resolve one of the most common electrical failures found in early Porsche 928 (1977–1978) instrument clusters.
From the factory, these vehicles were equipped with a flexible printed circuit foil mounted behind the gauge cluster. Over time, heat, age, and repeated removal cause this foil to become brittle, crack, or tear, leading to intermittent or complete failure of gauges, warning lights, and cluster illumination. Repairing the original foil is often unreliable or impossible.
This LutzAuto kit replaces the fragile factory flex circuit with a durable, modern printed circuit board (PCB) engineered to OEM dimensions for direct fitment. The redesigned PCB restores reliable electrical connections to all gauges and indicators while significantly improving long-term durability.
The kit also includes upgraded LED indicator and illumination lighting, reducing power draw while maintaining a period-correct appearance. Clear installation instructions are provided, making this an ideal solution for restorations, repairs, or preventative upgrades.
Designed and engineered by LutzAuto, this replacement circuit delivers improved reliability while preserving the original function and appearance of the Porsche 928 instrument cluster.

Fits:

• Porsche 928 4.5L 1977-78
  
  
  

What This Product Does:

• Replaces the factory flexible printed circuit board in the dashboard instrument cluster.
  
• Restores proper electrical connectivity between the vehicle wiring harness and all gauges (speedometer, tachometer, oil pressure, coolant temperature, etc.).
• Eliminates intermittent gauge failure, flickering needles, or dead indicators caused by old/failing circuit foil.
• Provides a modern hard-board alternative to the original fragile flex foil, enhancing durability and service life. 
  
  

What Is Included In The Kit:

• New Modern Circuit Boards 
• New Indicator LED lights
• New Illumination LED lights 
• Plugin Wiring and Zipties

Key Features:

• Direct fitment for 1977–1978 Porsche 928 gauge clusters.
  
• Fully redesigned replacement circuit made using modern printed circuit board technology, not delicate flex foil.
  
• Includes improved wiring and high-quality components that are less prone to failure than the original factory circuit.
• Comes with white LED indicator and illumination lights that consume less power while preserving a warm look (instructions included).
• Detailed installation instructions help ensure a successful upgrade with accurate gauge function and illumination.

Symptoms Of The Original Circuit Failing:

• Flickering or dead gauge needles
• Intermittent or non-workings warning lights
• Speedometer/Tachometer that behaves erratically
• Cluster backlighting that flickers or does not illuminate
• Complete loss of multiple cluster functions due to torn flex board

Why Replacement Matters:

• Restores full instrument functionality — essential for accurate vehicle monitoring and safe driving.
  
• Prevents dreaded gauge cluster failures — a common and frustrating issue on early Porsche 928 dashboards.
  
• Extends the life of irreplaceable vintage cluster components.
  
• Improves illumination and power consumption with modern LEDs.
• Preserves originality — maintains the classic look while bringing electronics up to a more reliable standard.

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LTZ-92864192300

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Gauge Cluster Printed Circuit Replacement.
The LutzAuto Instrument Cluster Printed Circuit Board Replacement is a precision-engineered solution designed to permanently resolve electrical failures in the Porsche 928 instrument cluster for model years 1979–1981.
Factory-installed flexible printed circuit foils in these vehicles are well known to deteriorate over time. Heat exposure, material fatigue, and repeated handling cause the original foil to crack or lose conductivity, resulting in unreliable gauge readings, warning light failures, and intermittent cluster operation. Attempting to repair the original foil is often ineffective and short-lived.
This LutzAuto replacement kit eliminates those issues by replacing the fragile flex foil with a robust, modern printed circuit board (PCB). Manufactured to exact OEM dimensions and electrical specifications, the PCB restores stable electrical connections to all gauges, indicators, and cluster lighting while significantly improving long-term durability.
Designed for direct installation, the board fits seamlessly into the original instrument cluster housing with no permanent modifications required. The result is a reliable, professional-grade repair that preserves the original appearance and functionality of the dashboard while delivering modern electrical reliability.
Ideal for restorations, daily drivers, and preventative maintenance, this ensures accurate instrumentation and dependable performance from your Porsche 928.

Fits:

• Porsche 928 4.5L 1979-81
  
  

What This Product Does:

• Replaces the original flex printed circuit foil that connects the vehicle wiring to all gauges and warning lights in the cluster
  
• Restores electrical continuity and stability for speedometer, tachometer, oil pressure, coolant temperature, fuel gauge, warning lamps, and backlighting
  
• Provides a hard-board PCB solution that is more durable than the factory flex foil
  
• Includes wiring mounting provisions and improvements that reduce intermittent electrical faults
• Retains full OEM appearance and functionality when installed

What Is Included In The Kit:

• New Modern Circuit Boards
• New Indicator LED lights
• New Illumination LED lights
• Plugin Wiring

Symptoms Of Failure:

• Erratic gauge behavior (jumping, sticking, or unresponsive)
• Warning LEDs that fail to illuminate or stay on constantly
• Cluster illumination issues (dim, flickering, or no light)
• Sudden loss of multiple gauge functions
• Dash cluster resets or intermittent faults

Key Features:

• Direct replacement for Porsche 928 (1979–1982) instrument cluster
• Modern printed circuit board (PCB) — stronger and more reliable than original flex foil
  
• Maintains full original functionality and fitment
  
• Restores gauge accuracy and electrical consistency
• Reduces intermittent faults and cluster electrical issues
• Easy installation with provided instructions and connector fitment

Why Replacement Matters:

• A properly functioning instrument cluster is crucial for monitoring engine status, vehicle speed, fuel level, and warning indicators. A faulty cluster can mask critical problems.
• No more jittery or stuck needles — accurate instrument readings help you drive with confidence.
• Replacing this known weak point helps maintain the long-term collectability and drivability of classic 928 models.
• LutzAuto parts are engineered and manufactured for high reliability, making this a superior alternative to attempting fragile repairs of the original flex circuit.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

LTZ-92864193900

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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:

• Porsche 928 4.5L 1982
  
• Porsche 928S 4.7L 1982-83
  
• Porsche 928S2 4.7L 1984
  
  

What This Product Does:

• Replaces the factory flexible printed circuit foil
• Restores stable electrical connections to all gauges and warning lights
• Eliminates intermittent cluster failures and flickering illumination
• Improves long-term reliability with modern PCB construction
• Maintains original cluster layout and appearance

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

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Gauge Cluster Printed Circuit Replacement.
The LutzAuto Instrument Cluster Printed Circuit Board Replacement is a precision-engineered solution designed to permanently correct common electrical failures in the Porsche 928 instrument cluster for model years 1985–1988.
From the factory, these clusters relied on a flexible printed circuit foil mounted behind the gauges. Over time, heat exposure, age-related material degradation, and repeated handling cause the original foil to become brittle, crack, or lose conductivity. This results in erratic gauges, failed warning lights, flickering illumination, and intermittent or total cluster malfunction. Repairing the original flex circuit is rarely reliable or long-lasting.
This LutzAuto replacement eliminates those issues by replacing the fragile flex foil with a modern, rigid printed circuit board (PCB). Manufactured to exact OEM dimensions and electrical specifications, the board restores stable power distribution and signal integrity to all gauges, warning indicators, and cluster lighting while dramatically improving durability.
Designed as a direct-fit replacement, this installs into the original instrument cluster housing with no permanent modifications required. It preserves the factory appearance of the dashboard while delivering modern electrical reliability—making it ideal for restorations, daily-driven classics, and preventative maintenance alike.

Fits:

• Porsche 928S2 4.7L 1985-86
  
• Porsche 928S4 5.0L 1987-88
  
  

What This Product Does:

• Replaces the factory flexible printed circuit foil in the instrument cluster
  
• Restores stable electrical connections to all gauges (speedometer, tachometer, fuel, temp, etc.)
• Powers warning lights and cluster illumination consistently
• Reduces intermittent faults caused by aged or brittle flex circuits
• Provides a serviceable, upgrade-quality circuit based on modern PCB construction
• Retains original fitment with no permanent modifications

What Is Included In The Kit:

• New Modern Circuit Boards
• New Indicator LED lights
• New Illumination LED lights
• Plugin Wiring and Zipties
• LTZ-POR-2PRONG-KIT

Key Features:

• Direct OEM-fit replacement for Porsche 928 model years 1985–1988
  
• Modern printed circuit board replaces the fragile, failure-prone flex foil
  
• Improved electrical reliability and signal integrity
• Durable design engineered to better withstand temperature cycles and vibration
• Compatible with original cluster housings and connectors
• Includes improved LED illumination where applicable (depending on options)

Symptoms Of A Failing Original Circuit:

• Flickering or non-responsive gauge needles
• Warning lights that don’t illuminate or stay on constantly
• Cluster lighting that is dim, inconsistent, or flickering
• Complete loss of cluster function at key points (especially on warm engines)
• Sudden or intermittent gauge failures
• Erratic behavior from multiple instruments simultaneously

Why Replacement Matters:

• Restores Accurate Instrumentation: Critical for monitoring engine vitals (speed, rpm, coolant temp, fuel) and maintaining safe operation.
  
• Eliminates Intermittent Faults: Broken circuits often create unpredictable behavior that can mask underlying mechanical issues.
  
• Prevents Further Electrical Damage: A failed flex circuit can lead to shorts, lighting issues, or electrical feedback problems.
  
• Extends Cluster Life: Modern PCB construction resists the aging and thermal stresses that doomed the original foil.
  
• Preserves Value and Authenticity: A correct-fit, OEM-spec replacement preserves both drivability and collector value.
  
• Reliable Daily Use: Whether driving regularly or restoring your 928, this replacement brings long-term peace of mind.

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LTZ-92864197302

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Instrument cluster frame cover.


Fits:
Porsche 928 1983-88

Click 'Zoom in' for large parts diagram.
Diagram ref no 26

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92864198700

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Instrument Cluster Housing.


Fits:
Porsche 928 1987-95

Click 'Zoom in' for large parts diagram.
Diagram ref no 6

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92864196802

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There are multiple tooth count options that can and will be installed in this odometer. You will need to count the teeth on the old gear before ordering. The outside gear will have 20 teeth and the smaller inner gear between 21 and 32.



Fits:
Porsche 911 1976-1989
Porsche 911 (930) 5/1986-1988
Porsche 912E 1976
Porsche 928 1977-1995
Porsche 944 1982-1991

PLEASE NOTE:
If you cannot count the teeth on the main gear then count the teeth of the next gear that it meshes with. If your tooth count is 49: 20x21, 48: 20x22, 47: 20x23, 41: 20x29, 40: 20x30, 38: 20x32

Need to open speedometer to determine correct style and tooth count required for your vehicle.

Resistor for instrument cluster generator.


Fits:
Porsche 928 1982-86

Click 'Zoom in' for large parts diagram.
Diagram ref no 15

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92864198100

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Speedometer Impulse Sender.


Fits:
Porsche 928 1978-84

Click 'Zoom in' for large parts diagram.
Diagram ref no 14

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92860621000

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Temperature & Fuel Gauge Indicator Instrument.

Fits:
Porsche 928 1983 - 1988

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92864194902

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Tensioner spring for speedometer impulse sender.

Fits:
Porsche 911 1974-77 - Models with electronic speedometer.
Porsche 911 1978-89 
Porsche 911 Turbo (930) 1975-77 
Porsche 928 1078-91

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91566050901

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