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- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Ignition Coil Ground Strap Set – Left & Right Earth Cables
High-quality ignition coil ground strap set designed for Porsche 928 S2 and 928 S4 models from 1985 onwards.
This set includes both left (driver’s side) and right
(passenger side) ground cables, providing the essential electrical connection
between the ignition coils and the cylinder heads. These earth straps ensure
proper grounding of the ignition system, supporting consistent spark
performance and reliable engine operation.
Fits:
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Diagram ref no 27 and 28
Manufactured using durable, high-conductivity materials with robust insulation and terminals, these cables are designed to withstand engine bay heat, vibration, and long-term use while maintaining optimal electrical performance.
A direct replacement set, these ignition coil ground straps are critical for maintaining ignition system reliability and preventing electrical faults.
Key Features
• Complete set of left and right ignition coil ground straps
• Suitable for Porsche 928S (from 1985 onwards)
• Provides secure grounding between ignition coils and cylinder head
• High-conductivity cable construction for reliable performance
• Durable insulation for engine bay conditions
• OEM-style fit and function
Function and Purpose
These ground straps provide the critical electrical grounding path for the ignition coils.
They help to:
• Ensure stable and consistent ignition performance
• Prevent electrical resistance or grounding faults
• Support proper spark generation
• Maintain reliable engine operation
Why Replace Your Ignition Coil Ground Straps
Over time, ground cables can degrade due to heat, corrosion, and vibration.
Common issues include:
• Corroded or oxidised terminals
• Frayed or damaged cables
• Increased electrical resistance
• Poor grounding leading to ignition issues
Replacing the ground straps restores proper electrical flow and helps prevent ignition system faults.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92861281
The product you are viewing cross references to these numbers
- 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
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
- 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 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 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
- 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
This set includes six ignition coils (part number 9A160210407) - enough to cover all cylinders on six-cylinder engines that utilise this coil type. This allows a full ignition system refresh with matched coils, ensuring consistency, balanced performance and simplified maintenance. Each coil is manufactured to the same specification as the single unit version for uniform operation.
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: All ignition coil positions on top of the engine block (one per cylinder).
• Applications: Ideal when replacing the full set of ignition coils at once, ensuring matched performance across all cylinders and avoiding potential imbalance between old and new coils.
When individual ignition coils vary in age or performance, you risk uneven spark delivery, cylinder imbalance, and compromised engine smoothness. Replacing all six at once ensures uniform performance, eliminates mismatched coil behaviour and restores full system harmony.
When to replace all six:
• One cylinder misfire detected - best practice is to replace all coils for balance.
• During major tune-up when spark plugs, ignition leads and coils are accessible.
• High-mileage vehicle where original coils are near end-of-life.
• Want to future-proof your ignition system and avoid second servicing soon after.
• To restore optimal engine behaviour, emissions performance and throttle response across all cylinders.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SERVICEPACK997
The product you are viewing cross references to these numbers
This kit is comprised of the following items: