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Porsche // 911 & 912 (1965-1989) // Any
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Spark plug cap. Porsche 928 S4 / GT / GTS - 92860231100
92860231100/1
Vehicle Group
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Information
Spark plug cap
Fits:
Porsche 928 S4 / GT / GTS 1987-96
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92860231100
The product you are viewing cross references to these numbers
Fits:
Porsche 928 S4 / GT / GTS 1987-96
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92860231100
92860231100
The product you are viewing cross references to these numbers
Price: £19.95
In stock
Related products
Vehicle Group
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Information
Spark plug W3CC.
6 Required per engine. Price is for each.
Fits:
Porsche 911 2.7L / 3.0L SC 1974-83
Porsche 911 2.7L 1974-75 Carrera
Porsche 911 3.0L 1976-77 Carrera
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917016290
The product you are viewing cross references to these numbers
6 Required per engine. Price is for each.
Fits:
Porsche 911 2.7L / 3.0L SC 1974-83
Porsche 911 2.7L 1974-75 Carrera
Porsche 911 3.0L 1976-77 Carrera
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917016290
99917016290
0242255502
The product you are viewing cross references to these numbers
Price: £19.40
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 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
Price: £39.15
Orderable
Vehicle Group
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 912E 4CYL 1976
Information
Spark plug WR 7 DC+
Genuine OE Porsche spark plug, factory-engineered to deliver precise ignition performance, efficient combustion, and reliable operation. Direct replacement part maintaining original Porsche ignition standards.
Sold individually, 4, 6 or 8 required depending on engine type
Fits:
Porsche 911 3.2L 1984 - 89 *with catalyst
Porsche 924S 2.5L 1986 - 1988
Porsche 928S / 928S2 / 928S4 / 928GT 1983 - 1991
Porsche 944 / 944S / 944S2 / 944T 1985 - 1991
Porsche 912E 1976
Porsche 968 1992 - 1995 Coupe
Porsche engines rely on accurate ignition timing and stable combustion, especially under high compression and performance conditions. Using a genuine Porsche spark plug helps maintain smooth idle, crisp throttle response, optimal power delivery, and controlled emissions. It also ensures compatibility with Porsche engine management systems and ignition coils.
Designed as a direct replacement, this spark plug installs without modification and is suitable for routine servicing, diagnostics, or replacement of individual worn plugs while maintaining full OE integrity.
The spark plug generates a precisely timed electrical spark inside the combustion chamber to ignite the air-fuel mixture. This controlled ignition initiates combustion, allowing the engine to produce power efficiently and smoothly.
Function:
• Produces a consistent ignition spark for efficient combustion
• Supports smooth idle, responsive acceleration, and stable power output
• Helps maintain fuel efficiency and emission control
• Engineered to Porsche’s exact OE heat range and performance standards
• Designed for durability under high thermal and mechanical loads
Spark plugs naturally wear due to heat, combustion pressure, and electrical stress. A worn or incorrect spark plug can cause misfires, rough running, reduced power, increased fuel consumption, and higher emissions. Replacing worn plugs with a genuine Porsche OE spark plug ensures the ignition system continues to perform exactly as engineered, protecting engine performance, efficiency, and longevity.
When to replace:
• Engine misfires or uneven idle
• Reduced throttle response or loss of power
• Increased fuel consumption
• At Porsche-recommended service intervals
• During routine engine servicing or ignition maintenance
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917015690
The product you are viewing cross references to these numbers
Genuine OE Porsche spark plug, factory-engineered to deliver precise ignition performance, efficient combustion, and reliable operation. Direct replacement part maintaining original Porsche ignition standards.
Sold individually, 4, 6 or 8 required depending on engine type
Fits:
Porsche 911 3.2L 1984 - 89 *with catalyst
Porsche 924S 2.5L 1986 - 1988
Porsche 928S / 928S2 / 928S4 / 928GT 1983 - 1991
Porsche 944 / 944S / 944S2 / 944T 1985 - 1991
Porsche 912E 1976
Porsche 968 1992 - 1995 Coupe
Porsche engines rely on accurate ignition timing and stable combustion, especially under high compression and performance conditions. Using a genuine Porsche spark plug helps maintain smooth idle, crisp throttle response, optimal power delivery, and controlled emissions. It also ensures compatibility with Porsche engine management systems and ignition coils.
Designed as a direct replacement, this spark plug installs without modification and is suitable for routine servicing, diagnostics, or replacement of individual worn plugs while maintaining full OE integrity.
The spark plug generates a precisely timed electrical spark inside the combustion chamber to ignite the air-fuel mixture. This controlled ignition initiates combustion, allowing the engine to produce power efficiently and smoothly.
Function:
• Produces a consistent ignition spark for efficient combustion
• Supports smooth idle, responsive acceleration, and stable power output
• Helps maintain fuel efficiency and emission control
• Engineered to Porsche’s exact OE heat range and performance standards
• Designed for durability under high thermal and mechanical loads
Spark plugs naturally wear due to heat, combustion pressure, and electrical stress. A worn or incorrect spark plug can cause misfires, rough running, reduced power, increased fuel consumption, and higher emissions. Replacing worn plugs with a genuine Porsche OE spark plug ensures the ignition system continues to perform exactly as engineered, protecting engine performance, efficiency, and longevity.
When to replace:
• Engine misfires or uneven idle
• Reduced throttle response or loss of power
• Increased fuel consumption
• At Porsche-recommended service intervals
• During routine engine servicing or ignition maintenance
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917015690
99917015690
92809460203
99917014190
99917015890
99917018990
9991701899A
The product you are viewing cross references to these numbers
Price: £20.71
In stock
Vehicle Group
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Information
Spark plug WR4CC.
Original Equipment spark plug manufactured by Porsche to the factory specification for the ignition system. A spark plug’s core function is to ignite the compressed air-fuel mixture inside each cylinder of the engine. It produces a controlled electrical spark at exactly the right moment, initiating combustion to deliver efficient power output and smooth engine performance.
Sold individually, 6 Required per engine.
Fits:
Porsche 911 3.2L Carrera 1984 - 1989
* Non Catalyst
Functions & Technical Role:
• Ignition ignition source: Generates spark for combustion on demand.
• Engine performance stability: Supports consistent firing across all cylinders.
• Fuel efficiency and emissions: Proper spark timing improves combustion and helps maintain efficient fuel use.
• Engine durability: Correctly specified plugs prevent misfires and reduce stress on ignition components.
• Plug Type: WR4CC, factory-recommended use.
Spark plugs are critical to efficient combustion and smooth engine performance. Over time, wear, carbon build-up, and heat cycling reduce spark strength, leading to misfires, poor throttle response, and increased fuel consumption. Replacing worn spark plugs with Genuine Porsche OE parts restores correct ignition timing, protects engine components, and keeps your 911 running as Porsche intended.
When to replace spark plugs:
• At manufacturer-recommended service intervals
• During routine engine servicing or tune-ups
• If experiencing misfires, rough idle, or hesitation
• When starting becomes harder than normal
• If fuel economy decreases
• During engine rebuilds or restoration work
• After prolonged storage before returning the car to use
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917015790
The product you are viewing cross references to these numbers
Original Equipment spark plug manufactured by Porsche to the factory specification for the ignition system. A spark plug’s core function is to ignite the compressed air-fuel mixture inside each cylinder of the engine. It produces a controlled electrical spark at exactly the right moment, initiating combustion to deliver efficient power output and smooth engine performance.
Sold individually, 6 Required per engine.
Fits:
Porsche 911 3.2L Carrera 1984 - 1989
* Non Catalyst
Functions & Technical Role:
• Ignition ignition source: Generates spark for combustion on demand.
• Engine performance stability: Supports consistent firing across all cylinders.
• Fuel efficiency and emissions: Proper spark timing improves combustion and helps maintain efficient fuel use.
• Engine durability: Correctly specified plugs prevent misfires and reduce stress on ignition components.
• Plug Type: WR4CC, factory-recommended use.
Spark plugs are critical to efficient combustion and smooth engine performance. Over time, wear, carbon build-up, and heat cycling reduce spark strength, leading to misfires, poor throttle response, and increased fuel consumption. Replacing worn spark plugs with Genuine Porsche OE parts restores correct ignition timing, protects engine components, and keeps your 911 running as Porsche intended.
When to replace spark plugs:
• At manufacturer-recommended service intervals
• During routine engine servicing or tune-ups
• If experiencing misfires, rough idle, or hesitation
• When starting becomes harder than normal
• If fuel economy decreases
• During engine rebuilds or restoration work
• After prolonged storage before returning the car to use
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917015790
99917015790
2411
The product you are viewing cross references to these numbers
Price: £19.40
Orderable