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Porsche > 991 (911) MK2 2016-2019 > 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19 > Service Parts > Spark Plugs >

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

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OE Match

99917015790/2

Product Information

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

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99917015790

99917015790

WR4CC

The product you are viewing cross references to these numbers

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Spark plug. Porsche 991.2 / 992 / Boxster 718 (982) / Cayman 718 (982)

0PB905612

Product Information

Spark Plug, ZR5.
Genuine OE Porsche spark plug. This factory-specified ignition component delivers the precise combustion performance and reliability Porsche requires for its road-going engines. Spark plugs are a critical engine component - they deliver the electrical spark that ignites the air-fuel mixture in each cylinder. This controlled ignition directly affects power delivery, fuel efficiency, emissions, and smooth idle quality.
Sold individually, 4 or 6 Required per engine

Fits:
Porsche 718 (982) Boxster 2.0L 2017>> (4 Required)
Porsche 718C (982C) Cayman 2.0L 2017>> (4 Required)

Porsche 991.2 Carrera 2017 - 2019 (6 Required)
Porsche 992.1 Carrera 2019 - 2024 (6 Required)

The spark plug provides a precisely timed electrical spark in the combustion chamber to ignite the air-fuel mixture. This ignition process is essential to converting fuel into usable power, ensuring smooth engine operation and consistent performance.

Function:
• Produces a controlled spark for efficient combustion
• Promotes stable idle and smooth acceleration
• Helps maintain fuel economy and emission standards
• Designed to exact Porsche OE specifications
• Durable and heat-resistant for long service life

Spark plugs wear over time from heat, combustion stress, and electrical load. Worn or degraded plugs can cause misfires, rough idle, reduced engine response, poor fuel economy, and increased emissions. Installing a genuine Porsche spark plug ensures the ignition system operates as intended by the factory, preserving performance, smooth running, and engine health.

When to replace:
• Engine misfires or rough idle occur
• Sluggish acceleration or inconsistent power delivery
• Elevated fuel consumption
• After reaching the manufacturer’s recommended maintenance interval
• During routine ignition system service or tune-up

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

0PB905612

99917015490

0242145552

0PB905612

The product you are viewing cross references to these numbers

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