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99917010390
Product Information
Product Information
Spark plug, FR6 DPP332 / Z185
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

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99917010390
99917010390

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