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Spark plug. Porsche 911 3.2L 1984-89 - 99917015790
99917015790/2
Vehicle Group
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
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Related, superseded, cross reference or alternative numbers for comparison.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
The product you are viewing cross references to these numbers
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
€4.62
Now €4.16
In stock
Related products
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
Information
Iridium spark plug BPR8EIX - (Bosch ref W3DP / W3DP0)
Original equipment iridium spark plug, engineered to Porsche factory standards for turbocharged classic engines. Featuring a high-grade iridium centre electrode, this plug offers enhanced durability, precise ignition performance, and long service life while maintaining full OE compatibility.
Sold individually, 6 Required for 911 engines / 4 Required for 924 engines.
Fits:
Porsche 930 3.0 Turbo 01.75 - 12.77 191kw 260hp Engine type 930.50, 930.52
Porsche 930 3.3 Turbo 06.86 - 08.89 221kw 300hp Engine type 930.66
Porsche 924 2.0 Turbo 06.80 - 10.86 130kw 177hp Engine type M31.03
Porsche 911E 2.0L 09.68 - 12.69 103kw 140hp Engine type 901.09, 901.11
Porsche 911S 2.0L 07.66 - 11.68 118kw 160hp Engine type 901.02 901.08
Porsche 911S 2.0L 09.68 - 12.69 125kw 170hp Engine type 901.10
Porsche 911E 2.2L 09.69 - 12.71 114kw 155hp Engine type 911.01, 911.04
Porsche 911S 2.2L 09.69 - 12.71 132kw 180hp Engine type 911.02
This iridium spark plug ignites the compressed air-fuel mixture inside the combustion chamber, enabling controlled combustion and efficient power delivery. The fine iridium electrode produces a strong, focused spark, helping turbocharged engines achieve smoother running, improved throttle response, and reliable ignition under higher cylinder pressures.
Functions & Technical Role:
• High-energy ignition spark for efficient combustion
• Iridium electrode technology for exceptional wear resistance
• Improved ignition stability under turbocharged operating conditions
• Enhanced cold starting performance
• Reduced misfires and uneven running
• Factory-matched heat range & gap for Porsche turbo engines
• Longer service intervals compared to conventional spark plugs
Spark plugs are critical to combustion efficiency, especially in turbocharged engines where cylinder pressures are higher. Over time, electrode wear and carbon build-up reduce spark quality, leading to misfires, poor boost response, and reduced performance. Replacing worn plugs restores reliable ignition, protects engine components, and helps maintain smooth, consistent power delivery.
When to replace spark plugs:
• At Porsche-recommended service intervals
• During routine servicing or ignition system checks
• If experiencing misfires, hesitation, or rough idle
• When cold starting becomes more difficult
• If boost response or performance drops
• During engine rebuilds or restorations
• After long-term vehicle storage before returning to use
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917012891
The product you are viewing cross references to these numbers
Original equipment iridium spark plug, engineered to Porsche factory standards for turbocharged classic engines. Featuring a high-grade iridium centre electrode, this plug offers enhanced durability, precise ignition performance, and long service life while maintaining full OE compatibility.
Sold individually, 6 Required for 911 engines / 4 Required for 924 engines.
Fits:
Porsche 930 3.0 Turbo 01.75 - 12.77 191kw 260hp Engine type 930.50, 930.52
Porsche 930 3.3 Turbo 06.86 - 08.89 221kw 300hp Engine type 930.66
Porsche 924 2.0 Turbo 06.80 - 10.86 130kw 177hp Engine type M31.03
Porsche 911E 2.0L 09.68 - 12.69 103kw 140hp Engine type 901.09, 901.11
Porsche 911S 2.0L 07.66 - 11.68 118kw 160hp Engine type 901.02 901.08
Porsche 911S 2.0L 09.68 - 12.69 125kw 170hp Engine type 901.10
Porsche 911E 2.2L 09.69 - 12.71 114kw 155hp Engine type 911.01, 911.04
Porsche 911S 2.2L 09.69 - 12.71 132kw 180hp Engine type 911.02
This iridium spark plug ignites the compressed air-fuel mixture inside the combustion chamber, enabling controlled combustion and efficient power delivery. The fine iridium electrode produces a strong, focused spark, helping turbocharged engines achieve smoother running, improved throttle response, and reliable ignition under higher cylinder pressures.
Functions & Technical Role:
• High-energy ignition spark for efficient combustion
• Iridium electrode technology for exceptional wear resistance
• Improved ignition stability under turbocharged operating conditions
• Enhanced cold starting performance
• Reduced misfires and uneven running
• Factory-matched heat range & gap for Porsche turbo engines
• Longer service intervals compared to conventional spark plugs
Spark plugs are critical to combustion efficiency, especially in turbocharged engines where cylinder pressures are higher. Over time, electrode wear and carbon build-up reduce spark quality, leading to misfires, poor boost response, and reduced performance. Replacing worn plugs restores reliable ignition, protects engine components, and helps maintain smooth, consistent power delivery.
When to replace spark plugs:
• At Porsche-recommended service intervals
• During routine servicing or ignition system checks
• If experiencing misfires, hesitation, or rough idle
• When cold starting becomes more difficult
• If boost response or performance drops
• During engine rebuilds or restorations
• After long-term vehicle storage before returning to use
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917012891
99917012890
99917012891
The product you are viewing cross references to these numbers
€39.31
Now €35.38
In stock
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 914 (1970-1976)
Information
Spark plug WR4DPO.
6 Required per engine. Price is for each.
Fits:
Porsche 911 T (1969 to 1973),
Porsche 914-6 (1970 and 1971)
Porsche 964 Turbo 3.3l (1991 and 1992)
Porsche 965 3.3L Turbo (M30.69)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917018690
The product you are viewing cross references to these numbers
6 Required per engine. Price is for each.
Fits:
Porsche 911 T (1969 to 1973),
Porsche 914-6 (1970 and 1971)
Porsche 964 Turbo 3.3l (1991 and 1992)
Porsche 965 3.3L Turbo (M30.69)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917018690
0242250512
99917018690
The product you are viewing cross references to these numbers
Price: €62.21
Orderable
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 914 (1970-1976)
Information
Spark plug cap.
6 Required per engine. Price is for each.
Fits:
Porsche 911 1965-76
Porsche 914 1970-76
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90160930900
The product you are viewing cross references to these numbers
6 Required per engine. Price is for each.
Fits:
Porsche 911 1965-76
Porsche 914 1970-76
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90160930900
90160930900
The product you are viewing cross references to these numbers
Price: €75.41
Orderable