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Spark plug FR5DTC. Porsche 964 / 964RS / 993 / 993RS - 99917018390
99917018390
Vehicle Group
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
Information
Spark plug, FR5DTC.
This genuine Porsche OE spark plug is the factory-installed ignition component in air-cooled and early liquid-cooled 911 Carrera and RS engines of the 964 and 993 generations. It provides the correct ignition characteristics for smooth, efficient operation, just as Porsche intended – ideal for service replacements, maintaining consistent performance and the authenticity of classic designs.
Sold individually, 12 spark plugs required per engine.
Fits:
Porsche 964 C2 / C4 1989 - 1993
Porsche 964 RS 3.6L 1991 -1993 M64.03
Porsche 993 C2 / C4 1994 - 1997
Porsche 993 C2S / C4S 1994 - 1997
Porsche 993 RS M64.20 1994 - 1997
Spark plugs are a critical part of the ignition system. Each plug creates an electrical spark inside the combustion chamber that ignites the compressed air-fuel mixture, producing the explosion that powers each engine cylinder. Genuine OE spark plugs ensure this ignition process is consistent, clean, and optimised - which supports smooth idle, strong throttle response, and efficient combustion throughout the rev range.
Functions & Technical Role:
• Ignition ignition source: Generates a reliable, timed spark for each cylinder
• Optimal combustion support: Maintains a consistent burn for power, efficiency, and emissions
• OE-matched heat range & gap: Designed to Porsche factory specifications for the 964/993 engine family
• Durable construction: Quality materials resist normal wear and combustion deposits
• High RPM performance: Suitable for classic 911 driving conditions
Spark plugs naturally wear from heat, combustion deposits, and electrode erosion. As they age, misfires, rough idle, and poorer fuel economy can develop. Installing Genuine Porsche OE plugs ensures the correct spark gap, heat range, and ignition performance, preserving engine efficiency, responsiveness, and emission stability.
When to replace spark plugs:
• At Porsche-specified service intervals
• During routine engine tune-ups or maintenance
• If experiencing misfires, hesitation, or rough idle
• When cold starting becomes harder than normal
• If performance or fuel economy drops
• While performing engine diagnostics or restoration work
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917018390
The product you are viewing cross references to these numbers
This genuine Porsche OE spark plug is the factory-installed ignition component in air-cooled and early liquid-cooled 911 Carrera and RS engines of the 964 and 993 generations. It provides the correct ignition characteristics for smooth, efficient operation, just as Porsche intended – ideal for service replacements, maintaining consistent performance and the authenticity of classic designs.
Sold individually, 12 spark plugs required per engine.
Fits:
Porsche 964 C2 / C4 1989 - 1993
Porsche 964 RS 3.6L 1991 -1993 M64.03
Porsche 993 C2 / C4 1994 - 1997
Porsche 993 C2S / C4S 1994 - 1997
Porsche 993 RS M64.20 1994 - 1997
Spark plugs are a critical part of the ignition system. Each plug creates an electrical spark inside the combustion chamber that ignites the compressed air-fuel mixture, producing the explosion that powers each engine cylinder. Genuine OE spark plugs ensure this ignition process is consistent, clean, and optimised - which supports smooth idle, strong throttle response, and efficient combustion throughout the rev range.
Functions & Technical Role:
• Ignition ignition source: Generates a reliable, timed spark for each cylinder
• Optimal combustion support: Maintains a consistent burn for power, efficiency, and emissions
• OE-matched heat range & gap: Designed to Porsche factory specifications for the 964/993 engine family
• Durable construction: Quality materials resist normal wear and combustion deposits
• High RPM performance: Suitable for classic 911 driving conditions
Spark plugs naturally wear from heat, combustion deposits, and electrode erosion. As they age, misfires, rough idle, and poorer fuel economy can develop. Installing Genuine Porsche OE plugs ensures the correct spark gap, heat range, and ignition performance, preserving engine efficiency, responsiveness, and emission stability.
When to replace spark plugs:
• At Porsche-specified service intervals
• During routine engine tune-ups or maintenance
• If experiencing misfires, hesitation, or rough idle
• When cold starting becomes harder than normal
• If performance or fuel economy drops
• While performing engine diagnostics or restoration work
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917018390
99917018390
99917018290
0242245539
The product you are viewing cross references to these numbers
Price: £20.71
In stock
Related products
Vehicle Group
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
Information
Genuine Porsche ignition coil, part number 9A160210408, for selected Porsche 997.2, 991, 987.2 and 981 models. This direct-ignition component supplies the high-voltage energy required by the spark plug in each cylinder.
Fits:
Porsche 997.2 Carrera 2009-12
Porsche 997.2 Turbo / Turbo S 2010-13
Porsche 997.2 GT3 2010-13
Porsche 991.1 Carrera 2012-16
Porsche 991 Turbo 2014-20
Porsche 991 GT3 2014-20
Porsche 987.2 Boxster 2009-12
Porsche 987C.2 Cayman 2009-12
Porsche 987C Cayman R MA1.21
Porsche 981 Boxster 2012-16
Porsche 981 Boxster Spyder 2016
Porsche 981C Cayman 2014-16
What This Product Does
The ignition coil transforms the vehicle electrical system's low voltage into a high-voltage pulse. This allows the spark plug to ignite the compressed air and fuel mixture at the correct point in the combustion cycle.
Functions
- Generates the high voltage needed by the spark plug
- Supports consistent ignition within its assigned cylinder
- Helps maintain smooth starting, idling and acceleration
- Forms part of the engine's direct-ignition system
Technical Details
- Genuine Porsche ignition coil
- Porsche part number: 9A160210408
- Supplied individually
- Six ignition coils are required per six-cylinder engine
- Supersedes Porsche references 9A160210401, 9A160210402 and 9A160210403
Symptoms of Fault
- Intermittent or persistent engine misfiresRough idle or hesitation during acceleration
- Difficult starting, particularly when the engine is hot
- Reduced engine power or limp modeI
- lluminated engine warning light
- Misfire or ignition-coil circuit fault codes
- Poor fuel economy caused by incomplete combustion.
Why Replacement Matters
Heat, vibration and electrical stress can gradually weaken the internal insulation of an ignition coil. Replacing a confirmed faulty unit helps restore dependable spark delivery and reduces the risk of continued misfiring. Check the spark plug, connector, wiring and engine earths during diagnosis, as faults in these areas can produce similar symptoms or place additional strain on the coil.
OE Reference
- 9A160210408- 9A160210401
- 9A160210402
- 9A160210403
FAQs
Can an ignition coil fail only when hot?Yes. Heat can expose deterioration within the insulation or electrical connections, causing an intermittent misfire after the engine warms up.
Should a coil be replaced using only a fault code?
A fault code identifies the affected circuit or cylinder but should be supported by checks of the spark plug, connector, wiring, supply voltage and earth connection.
Should the spark plugs also be inspected?
Yes. Worn, damaged or incorrectly specified spark plugs can increase the electrical load placed on an ignition coil.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A160210408
9A160210401
9A160210401
9A160210402
9A160210403
9A160210406
9A160210407
9A160210404
9A160210405
9A160210408
The product you are viewing cross references to these numbers
Price: £110.18
In stock
Vehicle Group
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
Information
Spark Plug FGR 5NQE.
x6 Required Per Engine.
Price Is For Each.
Fits:
Porsche 991.1 Carrera MKI 2012>>2016
Porsche 981 Boxster 2012>>2016
Porsche 981 Boxster Spyder 2016>>2016
Porsche 981 Cayman 2014>>2016
Porsche 981 Cayman GT4 2016>>2016
Diagram Ref No 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917015190
The product you are viewing cross references to these numbers
x6 Required Per Engine.
Price Is For Each.
Fits:
Porsche 991.1 Carrera MKI 2012>>2016
Porsche 981 Boxster 2012>>2016
Porsche 981 Boxster Spyder 2016>>2016
Porsche 981 Cayman 2014>>2016
Porsche 981 Cayman GT4 2016>>2016
Diagram Ref No 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917015190
99917015190
0242245581
The product you are viewing cross references to these numbers
Price: £27.07
In stock
Vehicle Group
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
Information
Ignition coil pack.
This ignition coil is designed for use in select Porsche engines. Its function is to convert the output voltage of the vehicle's 12V battery into the high-voltage pulse required by each spark plug, ensuring efficient ignition of the fuel-air mixture and smooth engine operation.
Sold each, 6 Required per engine.
Fits:
Porsche 997.2 Carrera 2009 - 2012
Porsche 997.2 Turbo / Turbo S 2010 - 2013
Porsche 997.2 GT3 2010 - 2013
Porsche 991.1 Carrera 2012 - 2016
Porsche 991 Turbo 2014 - 2020
Porsche 991 GT3 2014 - 2020
Porsche 987.2 Boxster 2009 - 2012
Porsche 987C.2 Cayman 2009 - 2012
Porsche 987C Cayman R MA1.21
Porsche 981 Boxster 2012 - 2016
Porsche 981 Boxster Spyder 2016
Porsche 981C Cayman 2014 - 2016
• This product supersedes. Porsche's old part numbers: 9A160210401, 9A160210402, 9A160210403, 9A160210404, 9A160210405, 9A160210406
• Position on Vehicle: Mounted on top of the engine, on each ignition-coil tower (direct ignition design); one coil per cylinder.
• Applications: Suitable replacement when original ignition coil shows wear, misfires, or performance issues — restoring reliable spark delivery, smooth running and correct engine behaviour.
The ignition coil is fundamental to your engine’s ignition system: it supplies the high-voltage spark to each cylinder. When a coil fails or degrades, symptoms may include misfires, rough idling, loss of power, increased emissions or even engine warning lights. Replacing a degraded unit with a fresh coil restores reliable ignition, optimal engine performance and helps prevent downstream damage (e.g., catalytic converter issues).
When and why to replace:
• Engine misfires, rough idle, or “choppy” acceleration.
• Trouble codes referencing misfire or coil circuit faults.
• One or more cylinders showing mis-fire despite spark plugs being serviceable.
• During tune-up/maintenance when coils are accessible and nearing service interval.
• Preventive replacement on high-mileage or original equipment coils to avoid sudden failure.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A160210408
The product you are viewing cross references to these numbers
This ignition coil is designed for use in select Porsche engines. Its function is to convert the output voltage of the vehicle's 12V battery into the high-voltage pulse required by each spark plug, ensuring efficient ignition of the fuel-air mixture and smooth engine operation.
Sold each, 6 Required per engine.
Fits:
Porsche 997.2 Carrera 2009 - 2012
Porsche 997.2 Turbo / Turbo S 2010 - 2013
Porsche 997.2 GT3 2010 - 2013
Porsche 991.1 Carrera 2012 - 2016
Porsche 991 Turbo 2014 - 2020
Porsche 991 GT3 2014 - 2020
Porsche 987.2 Boxster 2009 - 2012
Porsche 987C.2 Cayman 2009 - 2012
Porsche 987C Cayman R MA1.21
Porsche 981 Boxster 2012 - 2016
Porsche 981 Boxster Spyder 2016
Porsche 981C Cayman 2014 - 2016
• This product supersedes. Porsche's old part numbers: 9A160210401, 9A160210402, 9A160210403, 9A160210404, 9A160210405, 9A160210406
• Position on Vehicle: Mounted on top of the engine, on each ignition-coil tower (direct ignition design); one coil per cylinder.
• Applications: Suitable replacement when original ignition coil shows wear, misfires, or performance issues — restoring reliable spark delivery, smooth running and correct engine behaviour.
The ignition coil is fundamental to your engine’s ignition system: it supplies the high-voltage spark to each cylinder. When a coil fails or degrades, symptoms may include misfires, rough idling, loss of power, increased emissions or even engine warning lights. Replacing a degraded unit with a fresh coil restores reliable ignition, optimal engine performance and helps prevent downstream damage (e.g., catalytic converter issues).
When and why to replace:
• Engine misfires, rough idle, or “choppy” acceleration.
• Trouble codes referencing misfire or coil circuit faults.
• One or more cylinders showing mis-fire despite spark plugs being serviceable.
• During tune-up/maintenance when coils are accessible and nearing service interval.
• Preventive replacement on high-mileage or original equipment coils to avoid sudden failure.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A160210408
9A160210401
9A160210402
9A160210403
9A160210406
9A160210407
0040102005
0040102052
00004399001
9A160210400
9A160210404
9A160210405
9A160210408
The product you are viewing cross references to these numbers
Price: £22.11
In stock