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Spark Plugs (PACK OF 8). Porsche 928 1983-95 ❭ 99917015690
- Porsche 928GTS 5.4L 1992-95
This BOSCH spark plug set (pack of 8) is a complete spark plug kit specifically designed for the Porsche 928 V8 engine. This set contains all eight spark plugs required for a full engine replacement, ensuring balanced combustion and consistent performance across all cylinders.
PACK OF 8
Fits:
Porsche 928S / 928S2 / 928S4 / 928GT 1983 - 1991
Porsche 928 GTS 1992 - 1995 (M28.49/50)
Spark plugs play a critical role in engine operation by igniting the air-fuel mixture within the combustion chamber. Worn or incorrect plugs can lead to misfires, poor throttle response, increased fuel consumption, and hard starting. These Bosch spark plugs are engineered to deliver a strong, stable spark, promoting efficient combustion, smooth engine running, and reliable cold starts.
Manufactured to OEM specifications, Bosch spark plugs are precision-matched to the correct heat range and electrode design required by the Porsche 928. This ensures long service life, reduced fouling, and dependable performance under both normal driving and high-load conditions. Ideal for routine servicing, preventative maintenance, or full ignition system refresh on classic Porsche 928 models.
Key Functions:
• Ignites the air-fuel mixture for efficient combustion
• Supports smooth idle and stable engine performance
• Improves throttle response and fuel efficiency
• Helps prevent misfires and uneven cylinder operation
Features & Benefits
• Genuine Bosch manufacture
• Complete set of 8 spark plugs for V8 engines
• OEM-quality materials and construction
• Correct heat range for Porsche 928 applications
• Designed for durability and consistent ignition performance
• Suitable for routine servicing and engine maintenance
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917015690
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche Boxster 986 2.5L 1997-99
The Porsche Genuine OE Spark Plug is a factory-specified ignition component built to Porsche’s exact original equipment standards. This OE spark plug (often designated as 14FR7LDU / FR7LDC+) is designed to deliver the precise spark characteristics required by the 2.5-litre flat-six M96.20 engine in early Boxster 986 models.
Sold individually, 6 spark plugs required per engine.
Fits:
Porsche Boxster 986 2.5L 1997 - 1999
Spark plugs are a vital part of the ignition system - they produce the high-voltage electrical spark that ignites the air-fuel mixture inside the engine’s combustion chamber. A properly specified and fitted spark plug ensures efficient combustion, smooth engine running, and reliable start-up.
Functions & Technical Role
• Ignition source: Generates the spark needed for each cylinder to fire properly.
• Efficient combustion: Promotes complete fuel burn for better power delivery and economy.
• Idle stability: Helps reduce misfire, rough idle, and hesitation.
• Correct OE heat range & gap: Engineered to Porsche’s original specification for the Boxster 986 2.5L engine.
• Durable construction: Long-lasting performance suited to normal service intervals.
Spark plugs naturally wear down due to heat cycling, electrode erosion, and combustion deposits, which can lead to misfires, rough idle, reduced power, and poorer fuel economy. Replacing them with Genuine Porsche OE spark plugs restores correct gap, heat range, and spark characteristics - helping preserve performance, efficiency, and engine responsiveness.
When to replace spark plugs:
• At manufacturer-recommended service intervals (typically at major services)
• During routine engine tune-ups
• If experiencing misfires, rough idle, or loss of power
• When starting becomes inconsistent
• If fuel economy decreases significantly
• During engine diagnostics or rebuild work
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917020190
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
6 Required per engine. Price is for each.
Fits:
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT2 RS 2011-13
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-0
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99760210405
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 955 Cayenne S 4.5L V8 2003-06
Price is for each.
Fits:
Porsche Boxster 986 2.7L 1999-02
(6 Required per engine.)
Porsche Boxster S 986 3.2L 1999-02
(6 Required per engine.)
Porsche Boxster 986 2.7L 2003-04
(6 Required per engine.)
Porsche Boxster S 986 3.2L 2003-04
(6 Required per engine.)
Porsche 996 C2 3.4L 1997-08/01
(6 Required per engine.)
Porsche 996 C4 3.4L 1997-08/01 (6 Required per engine.)
Porsche 955 Cayenne V8 S M48.00 2003-06 (8 Required per engine.)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917020791
The product you are viewing cross references to these numbers
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