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Porsche > Cayenne 9PA (955) 2003-2006 > Service Parts >

Spark Plugs

Spark Plugs

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DISPLAYING 17 to 23 (of 23 products)
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Spark Plug. Porsche 955 Cayenne V6 3.2L 2003-06 - 95517021990, 0242135510
1
Spark Plug. Porsche 955 Cayenne V6 3.2L 2003-06
Special Order item
95517021990
Product Information
Product Information
Spark Plug, IZKR7B
OE Genuine Porsche spark plug for Porsche 955 Cayenne V6 3.2L models from 2003–2006. This original Porsche spark plug provides the ignition spark required for combustion, helping maintain smooth running, reliable starting and correct engine performance.
Sold individually, 6 required per engine

Fits:
Porsche 955 Cayenne 3.2L V6 (2003–2006) – Engine Code: D9J


Listed with spark plug reference IZKR7B, it helps deliver reliable ignition, smooth running and correct engine performance. Ideal for scheduled servicing, misfire diagnosis, ignition system repairs or replacing worn spark plugs with Genuine Porsche parts.

What This Part Does / Functions
•  Produces the ignition spark inside the combustion chamber
•  Ignites the air/fuel mixture at the correct time
•  Supports smooth idle and clean acceleration
•  Helps maintain engine power and fuel efficiency
•  Supports reliable cold starting
•  Helps reduce misfires caused by worn or incorrect spark plugs
•  Provides correct OE Porsche fitment and heat range
•  Replaces worn, fouled or aged original spark plugs.

Why Replace This Part?
Spark plugs are normal ignition service items and wear over time. The electrode gap can increase, the firing tip can become worn, and the plug can become fouled by fuel, oil or carbon deposits. Worn spark plugs may cause poor starting, rough idle, hesitation, misfires, reduced fuel economy and loss of performance. Replacing the spark plugs with OE Genuine Porsche spark plugs helps restore correct ignition performance and keeps the Cayenne 3.2L V6 running as Porsche intended.

When to Replace This Part
•   During scheduled spark plug service
•   If the engine has a misfire or rough idle
•   If starting becomes difficult
•   If acceleration feels hesitant or uneven
•   If fuel economy has reduced
•   If spark plugs are fouled, worn or damaged
•   During ignition coil replacement or ignition system service
•   When recommissioning a vehicle with unknown service history.

Where It Fits on the Car
 This spark plug fits in the engine cylinder head, with one spark plug fitted per cylinder. It works with the ignition coil to generate the spark required for combustion. Correct installation torque and Porsche workshop procedures should always be followed. Ignition coils, plug wells and coil seals should be inspected during replacement.

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

95517021990
95517021990
0242135510

The product you are viewing cross references to these numbers
Spark Plug. Porsche 955 Cayenne V6 3.2L 2003-06 - 95517021990, 0242135510 - 0242135510
2
Spark Plug. Porsche 955 Cayenne V6 3.2L 2003-06
95517021990/2
Product Information
Product Information
Spark Plug, IZKR7B
The Bosch spark plug (0 242 135 510 / IZKR7B) is an OEM-quality replacement designed specifically for the Porsche 955 Cayenne 3.2L V6 with engine code D9J. Manufactured as a direct replacement for Porsche part number 95517021990, this spark plug delivers reliable ignition performance, efficient combustion, and long-lasting durability.
Sold individually, 6 required per engine

Fits:
Porsche 955 Cayenne 3.2L V6 (2003–2006) – Engine Code: D9J


Spark plugs are a critical part of the ignition system, producing the spark that ignites the air-fuel mixture within each cylinder. Correct ignition timing and a strong, consistent spark are essential for smooth engine operation, optimum fuel economy, responsive acceleration, and reduced exhaust emissions. As spark plugs wear, ignition efficiency gradually declines, which can lead to rough idling, reduced performance, increased fuel consumption, and engine misfires.

Key Features & Benefits
•  Genuine Bosch OEM-quality spark plug
•  Direct replacement for Porsche 95517021990
•  Bosch part number 0 242 135 510 (IZKR7B)
•  Optimised heat range for the Porsche 3.2L V6 engine
•  Supports efficient combustion and fuel economy
•  Helps reduce misfires and improve throttle response
•  OEM-quality fit, performance, and durability

Why Replacing Spark Plugs Matters
Spark plugs naturally wear over time, reducing the strength and consistency of the ignition spark. Replacing them at the recommended service interval helps restore engine performance, improve fuel efficiency, reduce emissions, and ensure reliable starting in all driving conditions.

When to Replace Spark Plugs
•  At the manufacturer's recommended service interval
•  If the engine misfires or idles roughly
•  Poor fuel economy
•  Difficult starting or hesitation under acceleration
•  Reduced engine performance
•  During a scheduled ignition system service

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

95517021990
95517021990
0242135510

The product you are viewing cross references to these numbers
Spark Plug. Porsche 955 Cayenne V6 3.2L 2003-06 - 95517021990 - A1514156
1
Spark Plug. Porsche 955 Cayenne V6 3.2L 2003-06
95517021990/3
Product Information
Product Information
Spark Plug IZKR7B.
The OE Match Spark Plug IZKR7B is a premium-quality replacement ignition component designed to provide reliable spark generation and efficient combustion for compatible Porsche petrol engines. Manufactured to OE specifications for fit, heat range and ignition performance, this IZKR7B spark plug delivers consistent ignition of the air and fuel mixture, ensuring optimum engine performance, fuel efficiency and reduced exhaust emissions.  
Sold Each.
x6 Required Per Engine.

Fits:
  • Porsche 955 Cayenne 3.2L V6 2003-06

Manufactured using a high-strength steel shell, a precision-engineered fine-wire centre electrode and a premium ceramic insulator, the spark plug is designed to withstand extreme combustion temperatures, high cylinder pressures and continuous ignition cycles. Its advanced electrode design provides excellent spark stability while minimising wear, resulting in dependable performance and extended service life. Precision-manufactured for direct OE-style installation, it integrates seamlessly with the original ignition system and is ideal for scheduled servicing and engine maintenance.  

What This Product Does:
  • Produces the high-energy spark required to ignite the air and fuel mixture.
  • Promotes efficient and complete combustion.
  • Supports smooth engine operation and responsive acceleration.
  • Helps maximise fuel economy.
  • Reduces exhaust emissions through efficient combustion.
  • Provides reliable starting in hot and cold conditions.
  • Restores factory ignition system performance.
  • Forms an essential part of the engine ignition system.

Symptoms Of Wear Or Failure:
  • Engine misfires.
  • Rough or unstable idle.
  • Loss of engine power or poor acceleration.
  • Increased fuel consumption.
  • Difficult starting or prolonged cranking.
  • Hesitation during acceleration.
  • Illuminated engine management or check engine warning light.
  • Poor throttle response.
  • Increased exhaust emissions.
  • Fouled, worn or eroded spark plug electrodes.

Why Replacement Matters:

  • Spark plugs are subjected to thousands of ignition events every minute while operating in an environment of extreme heat, pressure and combustion deposits. Over time, electrode wear, carbon build-up and an increasing spark gap reduce ignition efficiency, leading to incomplete combustion and reduced engine performance.
  • A worn spark plug can cause engine misfires, rough running, increased fuel consumption and higher emissions. Continued operation with deteriorated spark plugs can also place additional strain on the ignition coils and allow unburnt fuel to enter the exhaust system, potentially shortening the lifespan of the catalytic converters.
  • Replacing worn spark plugs at the recommended service interval restores efficient combustion, smooth engine performance and dependable starting. The OE Match Spark Plug IZKR7B is manufactured to OE standards to provide factory-style fitment, reliable ignition performance and long-lasting durability, helping maintain the performance, efficiency and reliability expected from your Porsche.



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

95517021990
95517021990

The product you are viewing cross references to these numbers
Spark Plug. Porsche 955 Cayenne V8 Turbo - 99917022190 - Z282
2
Spark Plug. Porsche 955 Cayenne V8 Turbo
99917022190/1
Product Information
Product Information
Spark Plug.
8 Required per engine. Price is for each.

Fits:
Porsche 955 Cayenne V8 Turbo M48.50

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

99917022190
99917022190

The product you are viewing cross references to these numbers
Spark plug. Porsche 996 3.4L / Boxster 2.5L , 2.7L , 3.4LS , 955 Cayenne V8 S - 99917021890, 99917020791, 0242240587, 0242240578
2
Spark plug. Porsche 996 3.4L / Boxster 2.5L , 2.7L , 3.4LS , 955 Cayenne V8 S
99917020791/1
Product Information
Product Information
Spark plug FGR 6 KQE.
Price is for each.

bosch

Fits:

Porsche Boxster 986 2.7L 1999-02  (6 Required per engine.)
Porsche Boxster S 986 3.2L 1999-02  (6 Required per engine.)
Porsche Boxster 986 2.7L 2003-04  (6 Required per engine.)
Porsche Boxster S 986 3.2L 2003-04  (6 Required per engine.)
Porsche 996 C2 3.4L 1997-08/01  (6 Required per engine.)
Porsche 996 C4 3.4L 1997-08/01  (6 Required per engine.)
Porsche 955 Cayenne V8 S M48.00 2003-06  (8 Required per engine.)



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

99917020791
99917021890
99917020791
0242240587
0242240578

The product you are viewing cross references to these numbers
Spark plug. Porsche 996 3.4L / Boxster 2.5L , 2.7L , 3.4LS , 955 Cayenne V8 S - 99917021890, 99917020791, 0242240587, 0242240578
2
Spark plug. Porsche 996 3.4L / Boxster 2.5L , 2.7L , 3.4LS , 955 Cayenne V8 S
99917020791/3
Product Information
Product Information
Spark plug FGR 6 KQE.
Price is for each.


Fits:

Porsche Boxster 986 2.7L 1999-02  (6 Required per engine.)
Porsche Boxster S 986 3.2L 1999-02  (6 Required per engine.)
Porsche Boxster 986 2.7L 2003-04  (6 Required per engine.)
Porsche Boxster S 986 3.2L 2003-04  (6 Required per engine.)
Porsche 996 C2 3.4L 1997-08/01  (6 Required per engine.)
Porsche 996 C4 3.4L 1997-08/01  (6 Required per engine.)
Porsche 955 Cayenne V8 S M48.00 2003-06  (8 Required per engine.)



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

99917020791
99917021890
99917020791
0242240587
0242240578

The product you are viewing cross references to these numbers
Spark Plug. Porsche Cayenne V8 Turbo - 99917022190
1
Spark Plug. Porsche Cayenne V8 Turbo
Special Order item
99917022190
Product Information
Product Information
Spark Plug.
8 Required per engine. Price is for each.

Fits:
Porsche Cayenne V8 Turbo M48.50

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

99917022190
99917022190

The product you are viewing cross references to these numbers
DISPLAYING 17 to 23 (of 23 products)
1 2
Also found on these pages
About Spark Plugs

Porsche Spark Plugs | Design911 High-Performance Ignition Components for Power & Efficiency

Spark plugs play a vital role in the performance, efficiency, and reliability of your Porsche’s engine. They ignite the air-fuel mixture inside the combustion chamber, creating the precise explosion needed to generate power. High-quality spark plugs ensure clean ignition, smooth acceleration, and reduced emissions — helping your Porsche perform exactly as intended on every drive.

At Design911, we stock a full range of spark plugs from leading manufacturers, engineered for superior conductivity, heat resistance, and long service life. Available in iridium, platinum, and copper-core designs, each spark plug is precision-crafted to match your Porsche’s specific ignition requirements. Ideal for routine maintenance, tuning, or complete engine rebuilds, our spark plugs ensure reliable performance from idle to redline.

What Do Spark Plugs Do?

Spark plugs are critical ignition components that deliver the electric spark required to ignite the air-fuel mixture in the combustion chamber.

Core Functions:
• Create a high-voltage spark to initiate combustion.
• Ensure smooth, efficient engine operation.
• Support optimal fuel economy and throttle response.
• Reduce emissions through clean, consistent ignition.
• Maintain balanced power delivery and idle stability.

When properly maintained, spark plugs enhance both performance and fuel efficiency, ensuring your Porsche runs with precision and reliability.

Why Do Spark Plugs Fail or Degrade?

Spark plugs operate under intense pressure, heat, and chemical exposure — gradually wearing down over time and mileage.

Common Causes of Failure Include:
• Electrode wear from prolonged high-temperature operation.
• Carbon or oil fouling from incomplete combustion.
• Cracked or degraded insulators due to thermal stress.
• Incorrect heat range or plug gap settings.
• Age-related corrosion or weakened spark performance.

Failing spark plugs can cause rough idling, misfires, reduced fuel economy, and loss of power — making regular replacement essential to maintain your Porsche’s performance.

Why Replace or Upgrade Your Porsche Spark Plugs?

Replacing worn spark plugs restores full ignition efficiency, fuel economy, and responsiveness. Upgrading to performance-grade materials can also improve durability and spark precision for motorsport or tuned applications.

Key Benefits:
• Restores smooth acceleration and idle stability.
• Improves fuel efficiency and throttle response.
• Reduces misfires, vibration, and engine hesitation.
• Available in platinum, iridium, and copper-core configurations.
• Compatible with Porsche 911, 944, 968, Boxster, Cayman, Panamera, and Macan models.
• Ideal for servicing, tuning, or complete engine rebuilds.

Design911’s Porsche spark plugs deliver performance, precision, and protection — ensuring consistent ignition and long-lasting reliability for your Porsche engine.

Highlights

• Premium Porsche spark plugs for all engine types.
• Precision-engineered for reliable combustion and performance.
• Available in standard and high-performance variants.
• Improves efficiency, throttle response, and emissions.
• Fits both classic and modern Porsche models.
• Perfect for servicing, performance tuning, or restoration.

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