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DISPLAYING 1 to 3 (of 3 products)
9991700IK22/6
Product Information
Product Information
Ultra Fine Electrode

denso

By harnessing the power of Iridium, DENSO is suddenly able to shrink the surface area of the center electrode - the critical component of a spark plug. Unlike a typical platinum plug that has a 1.1mm diameter center electrode, DENSO Iridium Power plugs have the world's smallest center electrode measuring 0.4mm in diameter. This means that the voltage requirements are decreased while firing performance is greatly improved.


PACK OF 6

Fits:
Porsche 964 C2 / C4 3.6L 12/1988-09/1993 (kW 184; Engine 64.02 / 64.01) *Requires 12 pcs
Porsche 964 Carrera RS 3.6L 08/1991-09/1993 (kW 191; Engine 64.03) *Requires 12 pcs

Porsche 993 C2 3.6L 08/1993-08/1997 (kW 200; Engine M 64.05 / 06) *Requires 12 pcs
Porsche 993 C4 / Targa 3.6L 08/1995-08/1997 (kW 210; Engine M 64.21 / M 64.22) *Requires 12 pcs
Porsche 993 C4 3.8L 08/1995-08/1997 (kW 210; Engine M 64.05 S / M 64.06 S) *Requires 12 pcs
Porsche 993 C4 / RS / Targa 3.8L 08/1995-08/1997 (kW 221; Engine 64.2) *Requires 12 pcs
Porsche 993 Turbo 3.6L 02/1993-08/1997 (kW 265; Engine 64.5)

Porsche 996 Turbo 3.6L 06/2000>> (kW 309; Engine M 96.7)
Porsche 993 GT2 3.6L 04/2001>> (kW 340)

Porsche 997 C2 / C4 3.6L 07/2004>> (kW 239; Engine M 96.05)
Porsche 997 C2 / C4 3.8L 07/2004>> (kW 261; Engine M 97.01)

Porsche 987C Cayman 2.7L 07/2006>> (kW 180)
Porsche 987C Cayman S 3.4L 11/2005>> (kW 217)

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Related, superseded, cross reference or alternative numbers for comparison.

9991700IK22
99917018390
99917018290
9991700IK22

The product you are viewing cross references to these numbers
9991700IK22FTT
Product Information
Product Information
Ultra Fine Platinum Mass Electrode

denso

By harnessing the power of Iridium, DENSO is suddenly able to shrink the surface area of the center electrode - the critical component of a spark plug. Unlike a typical platinum plug that has a 1.1mm diameter center electrode, DENSO Iridium Power plugs have the world's smallest center electrode measuring 0.4mm in diameter. This means that the voltage requirements are decreased while firing performance is greatly improved.

Fits:
Porsche 964 C2 / C4   3.6L  12/1988-09/1993   (kW 184; Engine 64.02 / 64.01)
Porsche 964 Carrera RS   3.6L  08/1991-09/1993   (kW 191; Engine 64.03)

Porsche 993 C2   3.6L   08/1993-08/1997   (kW 200; Engine M 64.05 / 06)
Porsche 993 C4 / Targa   3.6L   08/1995-08/1997   (kW 210; Engine M 64.21 / M 64.22)
Porsche 993 C4   3.8L   08/1995-08/1997   (kW 210; Engine M 64.05 S / M 64.06 S)
Porsche 993 C4 / RS / Targa   3.8L   08/1995-08/1997   (kW 221; Engine 64.2)
Porsche 993 Turbo   3.6L   02/1993-08/1997   (kW 265; Engine 64.5)

Porsche 996 Turbo   3.6L   06/2000>>   (kW 309; Engine M 96.7)
Porsche 993 GT2   3.6L   04/2001>>   (kW 340)

Porsche 997 C2 / C4   3.6L   07/2004>>   (kW 239; Engine M 96.05)
Porsche 997 C2 / C4   3.8L   07/2004>>   (kW 261; Engine M 97.01)

Porsche 987C Cayman   2.7L   07/2006>>   (kW 180)
Porsche 987C Cayman S   3.4L   11/2005>>   (kW 217)

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

9991700IK22FTT
99917018390
99917018290
99917019590
99917022390

The product you are viewing cross references to these numbers
9991700IK22
Product Information
Product Information
Ultra Fine Electrode

denso

By harnessing the power of Iridium, DENSO is suddenly able to shrink the surface area of the center electrode - the critical component of a spark plug. Unlike a typical platinum plug that has a 1.1mm diameter center electrode, DENSO Iridium Power plugs have the world's smallest center electrode measuring 0.4mm in diameter. This means that the voltage requirements are decreased while firing performance is greatly improved.

Fits:
Porsche 964 C2 / C4   3.6L  12/1988-09/1993   (kW 184; Engine 64.02 / 64.01)
Porsche 964 Carrera RS   3.6L  08/1991-09/1993   (kW 191; Engine 64.03)

Porsche 993 C2   3.6L   08/1993-08/1997   (kW 200; Engine M 64.05 / 06)
Porsche 993 C4 / Targa   3.6L   08/1995-08/1997   (kW 210; Engine M 64.21 / M 64.22)
Porsche 993 C4   3.8L   08/1995-08/1997   (kW 210; Engine M 64.05 S / M 64.06 S)
Porsche 993 C4 / RS / Targa   3.8L   08/1995-08/1997   (kW 221; Engine 64.2)
Porsche 993 Turbo   3.6L   02/1993-08/1997   (kW 265; Engine 64.5)

Porsche 996 Turbo   3.6L   06/2000>>   (kW 309; Engine M 96.7)
Porsche 993 GT2   3.6L   04/2001>>   (kW 340)

Porsche 997 C2 / C4   3.6L   07/2004>>   (kW 239; Engine M 96.05)
Porsche 997 C2 / C4   3.8L   07/2004>>   (kW 261; Engine M 97.01)

Porsche 987C Cayman   2.7L   07/2006>>   (kW 180)
Porsche 987C Cayman S   3.4L   11/2005>>   (kW 217)

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

9991700IK22
99917018390
99917018290

The product you are viewing cross references to these numbers
DISPLAYING 1 to 3 (of 3 products)
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About IRIDIUM POWER Spark Plugs

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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