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Spark plug. Porsche 997 Turbo and GT2 ❭ 99917010390
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT2 2007-09
This Bosch double platinum spark plug is a high-quality ignition component manufactured to Porsche OE specification. This spark plug provides precise fitment, dependable ignition performance, and long-term reliability, making it ideal for routine servicing or maintaining OEM standards.
Sold individually, 6 spark plugs required per engine.
Fits:
Porsche 997 Turbo 3.6L 2007-09 (M97.70)
Porsche 997 GT2 2007-09 (M97.70)
Featuring double platinum electrodes, this spark plug is designed to deliver a strong, consistent spark with improved durability and resistance to wear. Platinum technology helps maintain optimal spark gap over a longer service life, supporting efficient combustion, smooth engine operation, and reliable cold starting. Compared to standard plugs, double platinum designs offer enhanced longevity and stable performance under demanding driving conditions.
Key Features & Benefits:
• Genuine Bosch manufacture
• Double platinum electrode design for extended service life
• Strong, consistent ignition performance
• OEM-quality replacement Supplied as single spark plug
Spark plugs are essential for reliable ignition and efficient combustion. Over time they wear and lose effectiveness, which can cause misfires, rough running, reduced performance, and higher fuel consumption. Replacing them at the correct interval helps maintain smooth engine operation and protects the ignition system from unnecessary strain.
When spark plugs should be replaced:
• At the manufacturer’s recommended service interval
• If the engine misfires or runs unevenly
• When cold starting becomes difficult
• If fuel economy or performance drops
• When plugs show signs of wear, fouling, or corrosion
• During major servicing or engine maintenance
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917010390
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005 -08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- 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 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- 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 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
6 Required per engine. Price is for each.

Fits:
Porsche Boxster 986 2.5L 1997-99
Porsche Boxster 986 2.7L 2003-2004
Porsche Boxster S 986 3.2L 2003-2004
Porsche 996 C2 3.4L 1997-08/01
Porsche 996 C4 3.4L 1997-08/01
Porsche 996 3.6L Inc. C2 / C4 / C4S
Porsche 996 GT3 MKI
Porsche 996 GT3 MKII
Porsche 996 Turbo
Porsche 987 Boxster 2.7L / 3.2L
Porsche 987C Cayman 2.7L / 3.4L
Porsche 997 3.6L, 3.8L / 997 GT3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99760210405
The product you are viewing cross references to these numbers
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT2 RS 2011-13
The Porsche Genuine OE Spark Plug is an original equipment ignition component designed and manufactured to Porsche’s exact factory specifications for high-performance engines. This OE spark plug (commonly referenced as FR6 DPP 332) delivers reliable, consistent ignition performance exactly as fitted in production.
Sold individually, 6 spark plugs required per engine.
Fits:
Porsche 997 Turbo 3.6L 2007 - 2009 (M97.70)
Porsche 997 GT2 2007 - 2009 (M97.70)
Porsche 997.2 GT2 RS 2011 - 2013
Spark plugs play a vital role in engine combustion by igniting the air-fuel mixture within each cylinder. The OE spark plug produces a stable, timed spark that enables efficient combustion, helping to maximise engine power output, maintain smooth running, and support proper emissions control. Using Porsche-specified plugs ensures that ignition characteristics such as heat range and gap are matched precisely to OEM requirements.
Functions & Technical Role:
• Ignition source: Delivers the spark needed for combustion in each cylinder
• Optimised combustion: Helps the engine run smoothly across idle, part-throttle, and full-load conditions
• OEM heat range & gap: Designed for factory combustion tuning
• Maintains performance: Reduces misfires and supports efficient fuel use
• Durable construction: Genuine components built to last in high-RPM applications
Over time, spark plugs wear due to electrode erosion and combustion by-product deposits. This wear can lead to misfires, rough idle, throttle hesitation, and reduced fuel economy. Replacing aged plugs restores precise ignition timing and combustion quality - preserving engine efficiency, performance, and reliability at design-intent levels.
When to replace spark plugs:
• At manufacturer-recommended service intervals
• During routine engine tune-ups
• If experiencing misfires or unstable idle
• When hard starting occurs
• If fuel economy drops
• During engine rebuilds or diagnostics
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917010390
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- 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 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- 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 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Porsche 996 / Boxster 986 / Boxster 987 / 996 GT3 MKII

same as 99760210404/1
PACK OF 6
Fits:
Porsche 996 3.6L Inc C2 / C4 / C4S
Porsche 986 Boxster 2.7L / 3.2L 3.4L 2003>>
Porsche 996 GT3 MKI
Porsche 996 GT3 MKII
Porsche 996 Turbo
Porsche 987 Boxster 2.7L / 3.2L
Porsche 987C Cayman 2.7L / 3.4L
Porsche 997 3.6L, 3.8L / 997 GT3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99760210405
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
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