Rotor Arms / Point Sets

Breaker point ignitor II. Ignitor Bosch 4 cyl

Fits:
Porsche 912 1968-69 w/Bosch Dist.

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PER-91843

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Breaker point ignitor II. Ignitor Bosch 4 cyl



Fits:
Porsche 356 1955-56 w/Bosch Dist # 231129022
Porsche 912 1966-67 w/Bosch Dist # 231129022

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PER-91844

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Breaker point ignitor II. Ignitor Bosch 4 cyl



Fits:
Porsche 356 1955-56 w/Bosch Dist # 231129031
Porsche 912 1966-67 w/Bosch Dist # 231129031

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PER-92847

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Breaker point ignitor. Ignitor Bosch 4 cyl



Fits:
Porsche 912 1968-69 w/Bosch Dist.

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PER-1843

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Breaker point ignitor. Ignitor Bosch 4 cyl



Fits:
Porsche 356 1955-56 w/Bosch Dist # 231129022
Porsche 912 1966-67 w/Bosch Dist # 231129022

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PER-1844

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Breaker point ignitor. Ignitor Bosch 4 cyl



Fits:
Porsche 356 1955-56 w/Bosch Dist # 231129031
Porsche 912 1966-67 w/Bosch Dist # 231129031

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PER-2847

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Contact breaker points, for MARELLI distributors.



Fits:
Porsche 911 1965 - 1973

Click 'Zoom in' for large parts diagram.
Diagram ref no 8

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91160296000

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Contact beaker point for Ignition Distributor no: 91160202103, 91160202703, 91160203105 and 91160203106.



Fits:
Porsche 911 1972-77

Click 'Zoom in' for large parts diagram.
Diagram ref no 8

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91160293600

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Point Contact Breaker.
Restore reliable ignition switching and consistent engine operation with this Porsche Point Contact Breaker. Designed for compatible classic Porsche ignition systems, the contact breaker—commonly known as ignition points, contact points or breaker points—is a key mechanical component within the distributor.

Fits:

Diagram Ref No 23

In a traditional points-based ignition system, the distributor cam repeatedly opens and closes the contact breaker as the engine rotates. This switching controls current through the ignition coil. When the points open, the magnetic field in the coil collapses, generating the high voltage required to produce a spark at the spark plugs.

Because the contact surfaces open and close thousands of times during normal engine operation, they gradually wear. Electrical arcing can cause pitting or burning of the contacts, while mechanical wear can alter the points gap and ignition dwell angle.

Correctly adjusted, serviceable contact points are essential for reliable starting, smooth running and accurate ignition performance. Replacing worn points with the correct Porsche Point Contact Breaker 61660222603 helps restore dependable ignition switching and provides a sound basis for correct distributor adjustment.

What This Product Does:

• Mechanically switches the ignition coil primary circuit.
• Opens and closes as the distributor cam rotates.
• Controls the timing of ignition coil charging and discharge.
• Allows the ignition coil to generate the high voltage required for the spark plugs.
• Helps maintain the correct ignition dwell when properly adjusted.
• Supports reliable engine starting.
• Helps maintain smooth idle and consistent engine operation.
• Supports correct ignition performance throughout the engine speed range.
• Works together with the distributor, ignition coil and condenser.
• Provides a serviceable component for traditional mechanical ignition systems.
• Replaces worn, burned, pitted or incorrectly operating contact points.
• Helps maintain the original-style ignition system on compatible classic Porsche models.  

Symptoms Of Wear Or Failure:

• Difficult starting.
• Engine cranking but failing to start.
• Intermittent starting problems.
• Rough or unstable idle.
• Engine misfires.
• Hesitation during acceleration.
• Poor throttle response.
• Loss of engine power.
• Engine cutting out intermittently.
• Poor running at higher engine speeds.
• Inconsistent ignition timing.
• Excessive electrical arcing at the points.
• Burned or blackened contact surfaces.
• Pitting or material transfer between the contacts.
• Incorrect or continually changing points gap.
• Excessive wear of the rubbing block.
• Weak or inconsistent ignition spark.
• Increased fuel consumption caused by poor ignition performance.  

Why Replacement Matters:

• The contact breaker is central to the operation of a conventional mechanical ignition system. If the points cannot switch the ignition coil correctly, spark quality and ignition timing can deteriorate.
• As the contact surfaces become burned or pitted, electrical resistance can increase and switching can become less consistent. This may reduce the effectiveness of the ignition system and contribute to misfires or difficult starting.
• Mechanical wear is equally important. The rubbing block follows the distributor cam and determines when the contacts open. As this surface wears, the points gap and dwell angle can change.
• An incorrect points gap can alter ignition performance and timing. Too little or too much dwell can affect how effectively the ignition coil charges between firing events.
• Replacing worn points with a correct Porsche Point Contact Breaker 61660222603 helps restore precise mechanical switching, reliable spark generation and consistent engine performance.

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61660222603

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Contact Breaker Point Set

Keep your classic Porsche ignition system performing at its best with this OE Match Contact Breaker Points. Manufactured to OE specifications, these precision-engineered breaker points are designed to restore accurate ignition timing, reliable spark generation and dependable engine performance.

Fits:

• Porsche 911 1965-1968 2.0L / 912 SWB (F)
• Porsche 356A 1955-59
• Porsche 356B 1959-63

As one of the key service components within a traditional distributor ignition system, the contact breaker points control the opening and closing of the ignition circuit, allowing the ignition coil to generate the high-voltage spark required for combustion. Correctly adjusted breaker points are essential for smooth starting, stable idle, responsive acceleration and efficient engine operation.

Whether you're carrying out routine ignition maintenance, rebuilding a distributor or restoring a classic Porsche to its original specification, these OE Match breaker points provide factory-quality fitment, dependable operation and long service life.

What Do Contact Breaker Points Do?

Contact breaker points are responsible for switching the ignition coil on and off in precise synchronisation with engine rotation.

Their primary functions include:

• Opening and closing the ignition circuit.
• Triggering spark generation at the ignition coil.
• Maintaining accurate ignition timing.
• Supporting smooth engine idle.
• Ensuring consistent combustion.
• Providing reliable engine starting.
• Working in conjunction with the distributor, condenser, ignition coil and spark plugs.

Accurate operation of the breaker points is essential for maintaining engine performance and fuel efficiency.

Why Replace Contact Breaker Points?

As mechanical ignition components, breaker points naturally wear through continual opening and closing during engine operation.

Common causes of wear include:

• Contact surface erosion.
• Electrical arcing. Incorrect point gap adjustment.
• Heat-related wear.
• Oxidation and corrosion.
• Weak contact spring tension.
• General age-related deterioration.
• High mileage.

Routine replacement helps maintain accurate ignition timing and reliable engine performance.

Symptoms of Worn Contact Breaker Points

Common signs that replacement may be required include:

• Difficult starting.
• Engine misfires.
• Rough or unstable idle.
• Poor acceleration.
• Hesitation under load.
• Reduced fuel efficiency.
• Loss of engine power.
• Inconsistent ignition timing.
• Increased exhaust emissions.

Replacing worn ignition points restores smooth running and helps protect other ignition system components from unnecessary stress.

Benefits

• Restores reliable ignition performance.
• Maintains accurate ignition timing.
• Improves engine starting.
• Supports smoother idle.
• Enhances throttle response.
• Helps improve fuel efficiency.
• Reduces misfires and hesitation.
• Excellent value replacement component.

Installation Recommendations

When replacing the contact breaker points, it is recommended to inspect or renew other ignition service components, including:

• Distributor condenser.
• Distributor cap.
• Rotor arm.
• Spark plugs.
• Ignition leads.
• Ignition coil.
• Distributor shaft for wear.
• Distributor advance mechanism.

After installation, the breaker point gap and ignition timing should be adjusted according to the manufacturer's specifications to ensure optimum engine performance.

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61660222603

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Point contact breaker.



Fits:
Porsche 911 1965-73
Porsche 912E

Point contact breaker.



Fits:
Porsche 911 1965-73
Porsche 912E

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61660222602

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