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Your Vehicle
Porsche // 964 (911) (1989-1994) // 964 (911) TURBO 3.6L 1991-93
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IRIDIUM POWER Spark Plugs
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Genuine Porsche spark plug connector this connector is for cylinder 3 on the exhaust side; it is a spark plug connector.
Fits
- Porsche 964 (911) C2 1989–93
- Porsche 964 (911) C4 1989–93
- Porsche 964 (911) RS 3.6L 1991–93
- Porsche 964 (911) RS 3.8L 1991–93
- Porsche 964 (911) TURBO 3.3L 1991–93
- Porsche 964 (911) TURBO 3.6L 1991–93
- Porsche 993 (911) C2 1994–97
- Porsche 993 (911) C4 1994–97
- Porsche 993 (911) RS 1994–97
- Porsche 993 (911) C2S 1994–97
- Porsche 993 (911) C4S 1994–97
- Porsche 993 (911) TURBO 1994–96
- Porsche 993 (911) GT2 1994–97
- Porsche 993 (911) TURBO S 1994–97
Check fitment for your specific vehicle (model, year, engine) before ordering.
Diagram ref no 26
What This Product Does
This connector forms the connection between an ignition lead and its spark plug. It is an ignition connection component, rather than the spark plug itself or a complete ignition lead set.
Functions
- Connects the ignition lead to the spark plug terminal.
- Provides the plug-end connection within the ignition circuit.
- Allows renewal of the connector when inspection identifies deterioration.
Technical Details
- Porsche part number: 91160231300.
- Porsche identification: cylinder 3, exhaust-side spark plug connector.
Symptoms of Fault
- Misfiring or an uneven idle.
- Hesitation, particularly under engine load.
- Ignition problems that become more noticeable in damp conditions.
- Cracked insulation, loose connections or corroded terminals.
- Tracking marks indicating electrical leakage.
Why Replacement Matters
A deteriorated connector can interrupt the ignition connection or allow electrical leakage. Replace it when inspection confirms damage, corrosion or poor contact, rather than assuming that a misfire identifies this component alone. Check the associated lead and spark plug during diagnosis, as faults elsewhere in the ignition system can produce similar symptoms.
FAQs
Is this a spark plug or a complete lead set?
No. Part 91160231300 is the spark plug connector.
Should replacement be based only on a misfire?
No. Inspect the connector, lead and plug, and confirm the fault before replacing components.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91160231300
The product you are viewing cross references to these numbers
Porsche Iridium Power Spark Plugs - High-Performance Ignition Upgrade
Iridium Power Spark Plugs are designed to deliver a stronger, more consistent spark for improved combustion efficiency, throttle response, and engine performance. Featuring ultra-fine iridium electrodes, these spark plugs require less voltage to fire while producing a more precise ignition spark—ideal for high-performance and tuned Porsche engines.
Available from Design911, Porsche Iridium Power spark plugs are engineered to improve ignition reliability under high temperature and high RPM conditions, making them a popular upgrade for both road and track-driven vehicles.
What Do Iridium Power Spark Plugs Do?
Iridium spark plugs ignite the air-fuel mixture more efficiently and consistently.
Core Functions:
- Produce a stronger, more focused ignition spark.
- Improve combustion efficiency and throttle response.
- Support smooth engine operation at high RPM.
- Reduce misfires under load.
- Enhance fuel efficiency and performance consistency.
Reliable ignition is critical for optimal engine performance.
Why Do Standard Spark Plugs Fail?
Conventional copper or platinum spark plugs degrade over
time due to heat and wear. Common failure causes include:
- Electrode erosion from repeated firing.
- Increased voltage demand with age.
- Carbon fouling and contamination.
- Heat-related breakdown in performance engines.
- Misfires under high load or boost.
Worn spark plugs can lead to poor performance, rough running, and reduced fuel efficiency.
Why Upgrade to Iridium Power Spark Plugs?
Iridium Power spark plugs are designed to outperform standard plugs in demanding conditions.
Upgrade Benefits:
- Ultra-fine iridium electrode for efficient ignition.
- Lower firing voltage and improved spark stability.
- Increased resistance to heat and wear.
- Longer service life compared to standard plugs.
- Ideal for tuned, high-performance, and track use.
Upgrading improves ignition reliability and supports consistent power delivery.
Highlights
- Porsche Iridium Power spark plug upgrades
- Stronger, more consistent ignition spark
- Improved throttle response and combustion efficiency
- Designed for high-RPM and performance engines
- Long service life and reliability
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