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

Spark plug, WR4CC
This NGK spark plug (single unit) is a high-quality ignition component designed specifically for the Porsche 911 3.2-litre Carrera (1984–1989) without catalytic converter. Ideal for replacing an individual plug or purchasing multiples for a full engine service, this spark plug is manufactured to meet OEM specifications for non-catalyst air-cooled flat-six engines.
Sold individually, 6 Required per engine.

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

Spark plugs are responsible for igniting the air-fuel mixture inside the combustion chamber. Correct specification is essential on non-catalyst engines to ensure stable combustion, strong throttle response, and efficient engine operation. A worn or incorrect spark plug can cause misfires, rough idle, reduced power, and increased fuel consumption.

 • Creates a controlled spark to ignite the air-fuel mixture
 • Supports smooth engine running and stable combustion
 • Helps maintain power delivery and fuel efficiency

Key Functions & Benefits:
•  Genuine NGK manufacture
•  Supplied as one spark plug (order quantity as required)
•  Correct specification for non-catalyst 3.2 Carrera
•  OEM-quality materials and construction
•  Reliable ignition performance and long service life

Spark plugs are critical to proper combustion, directly affecting engine performance, fuel efficiency, and reliability. Worn or incorrect spark plugs can cause misfires, rough running, poor throttle response, and increased fuel consumption. Regular replacement helps maintain smooth operation and protects key engine components from unnecessary stress.

 When spark plugs should be replaced:
•  During scheduled servicing intervals
•  If the engine shows signs of misfiring or rough idle
•  When experiencing poor cold starting
•  If fuel consumption increases unexpectedly
•  After long-term storage or inactivity
•  When plugs show visible wear, fouling, or corrosion

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99917015790

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