Spark plug. Porsche 911 3.2L 1984-89  ❭  99917015790

Spark plug WR4CC.
The spark plug produces a precisely timed electrical spark inside the combustion chamber to ignite the air-fuel mixture. This process enables efficient combustion, smooth power delivery, and reliable engine performance.
Sold individually, 6 Required per engine.

Fits:
Porsche 911 3.2L Carrera 1984 - 1989
Non Catalyst.

Spark plugs are critical to engine efficiency, power delivery, and smooth running. Over time, heat and combustion stress can reduce spark quality, leading to misfires, hesitation, and increased fuel consumption. Replacing a worn plug with this OE Match unit helps restore proper ignition timing and reliable combustion performance.
Designed as a direct replacement, this spark plug installs easily with no modification required, making it ideal for routine servicing or replacement of individual plugs.

Function:
•  Generates a consistent ignition spark for proper combustion
•  Supports smooth idle and responsive throttle response
•  Helps maintain fuel efficiency and stable engine operation
•  Direct-fit replacement for straightforward installation

A worn or degraded spark plug can cause rough running, misfires, loss of power, and poor fuel economy. Using a correct OE Match spark plug ensures ignition performance remains consistent with factory expectations, helping preserve engine reliability and long-term efficiency.

When to replace:
•  Engine misfires or uneven idle
•  Reduced throttle response or hesitation Increased fuel consumption
•  At manufacturer-recommended service intervals
•  During routine tune-ups or ignition system servicing

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99917015790

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