Distributor cap. Porsche 911 SC / 930 Turbo  ›  93060290401

OE Match distributor cap, this replacement forms part of the distributor-based ignition system.

Fits

• Porsche 911 3.0SC 1978-83
• Porsche 930 3.0/3.3L 1975-89
  
  

Check fitment for your specific vehicle (model, year, engine) before ordering.

What This Product Does

Working with the rotating distributor arm, the cap provides the electrical paths through which ignition voltage reaches the appropriate spark-plug lead. Its insulating body separates the contacts, helping prevent current from taking an unintended path.

Functions

• Provides connection points for the ignition leads.
• Passes ignition voltage between the rotor and individual lead terminals.
• Encloses the distributor's internal contact area.
  
  

Technical Details

• Part number identified in the supplied diagrams: 93060290401.
• Additional supplied reference: 1235522053.
• Application context: 3.0L SC and 3.0L / 3.3L Turbo ignition systems.
  
  

Symptoms of Fault

• Uneven running or misfiring, particularly during damp weather.
• Starting difficulties that occur intermittently.
• Hesitation when accelerating.
• Fine cracks around the lead connections.
• Dark tracking lines or electrical burn marks inside the cap.
• Oxidised or visibly deteriorated terminals.
  
  

Why Replacement Matters

Cracking, contact deterioration and internal tracking can allow ignition voltage to escape or reach the wrong terminal. Renewing a cap with confirmed damage addresses that fault rather than relying on cleaning alone. Inspect the rotor, leads and surrounding connections during diagnosis, as other ignition faults may produce similar symptoms.

FAQs

• Can damage be hidden?
  Yes. Internal tracking may be present even when the outside appears intact.
• Should the rotor also be checked?
  Inspect both components for deterioration before deciding which parts require renewal.
• Will cleaning repair a cracked cap?
  No. Removing contamination does not repair cracks or damaged insulation.
• How should compatibility be confirmed?
  Compare the vehicle details, distributor specification and original references before fitting.

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Related, superseded, cross reference or alternative numbers for comparison.

93060290401

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