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Spark Plugs
The Spark Plug and Heatshield Kit for Porsche 996 / 997 includes OE MATCH spark plugs, Elring Seals and Genuine Porsche heatshield. These components are required for a complete and reliable ignition service. Designed specifically for Porsche 996 / 997 models, this kit ensures optimal combustion performance while protecting ignition components from excessive engine heat.
Kit Includes:
x6 Spark Plugs (OE MATCH 99917022390/3)
x6 Spark Plug Seals (Elring 99970176141/1)
x2 Heatshields (OE Porsche 99610444502)
Fits:
- Porsche 996 C2 3.6L 2002-2005
- Porsche 996 C4 3.6L 2002-2005
- Porsche 996 C4S 3.6L 2002-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Diagram Ref No:
Image 1 - Diagram Ref No 4
Image 2 - Diagram Ref No 30
Image 3 - Diagram Ref No 37
What This Product Does:
- Igniting the air-fuel mixture for efficient combustion
- Maintaining smooth engine idle and acceleration
- Protecting ignition components from excessive heat
- Supporting consistent spark delivery
- Helping maintain optimal fuel efficiency and emissions control
Symptoms Of Wear Or Failure:
- Rough or unstable idle
- Engine misfires
- Hesitation during acceleration
- Reduced fuel efficiency
- Loss of engine power
- Difficulty starting the engine
- Check Engine Light illumination
- Visible corrosion or damage to heatshield components
Why Replacement Matters:
- Restore smooth and responsive engine performance
- Improve fuel efficiency
- Protect ignition components from excessive heat
- Reduce emissions
- Prevent costly repairs to coils and related components
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SPARKPLUGKIT.996
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
PACK OF 6

Fits:
Porsche 996 Carrera 3.6L 2001>>
Porsche 987 Boxster 2.7L / 3.2L 2005-08
Porsche 987C Cayman 2.7L / 3.2L 2005-08
Porsche 997 Carrera 3.6L / 3.8L 2005-08
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917022390
The product you are viewing cross references to these numbers
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Replacing spark plugs as a complete set is essential for balanced combustion and even engine performance. This OE Match pack of six is the correct solution for scheduled maintenance, tune-ups, or resolving misfire and rough-running issues caused by worn or aged plugs. It installs directly with no modification required.
PACK OF 6
Fits:
Porsche 996 Carrera 3.6L 2001 - 2005
Porsche 987 Boxster 2.7L / 3.2L 2005 - 2008
Porsche 987C Cayman 2.7L / 3.2L 2005 - 2008
Porsche 997 Carrera 3.6L / 3.8L 2005 - 2008
Supplied as a complete set of six, it is ideal for full engine servicing on compatible Porsche six-cylinder engines.
Each spark plug delivers a precise electrical spark to ignite the air-fuel mixture in its respective cylinder. As a complete set, they ensure uniform combustion across the engine, supporting smooth running and consistent performance.
Function:
• Provides reliable ignition for all six cylinders
• Supports smooth idle, acceleration, and throttle response
• Helps maintain fuel efficiency and engine balance
• Designed to match OE Porsche heat range and performance
• Supplied as a complete engine set for correct servicing
Spark plugs wear over time due to heat and combustion stress. Replacing all six plugs together ensures even ignition timing across cylinders, prevents misfires, restores lost performance, and protects catalytic converters from damage caused by incomplete combustion. Using an OE Match set ensures correct performance without compromising reliability.
When to replace:
• Rough idle or misfires
• Poor acceleration or throttle response
• Increased fuel consumption
• After the manufacturer’s recommended interval
• During regular engine tune-up or service
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917022390
The product you are viewing cross references to these numbers
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Fits:
Porsche 996 C2 / C4 / C4S 2002>>
Porsche 997 MKI C2 / C2S 2005-08 COUPE/CABRIO
Diagram ref no 37.
This product supersedes Porsche's old part number:
- 996 104 445 01.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610444502
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
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.