Ignition Coil

911 Bosch Direct Fit COP Ignition Coils - High-Performance Ignition Upgrade for Porsche 911 G-Model (1975–1989)
6x coilpacks for your 911 coil on plug conversion

The Adapt Motorsports Bosch Direct Fit COP Ignition Coils offer a modern ignition upgrade for Porsche 911 G-Model (1975–89) engines undergoing EFI and aftermarket ECU conversions. These proven, high-performance Bosch coils provide a strong, consistent spark and mount directly into the original plug holes for a secure, high-integrity installation.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 911 1975-1977 3.0L Turbo (930)
• Porsche 911 1978-1989 3.3L Turbo (930)

These coils require spark plugs with a smaller ceramic to fit correctly. Plugs such as IW22 iridiums work well.

Designed specifically for aftermarket fuel injection and engine management systems, these coils are not compatible with the original DME controller. They require an upgraded ECU and wiring loom, making them an essential component in performance builds, restomods or distributor-delete conversions. Adapt Motorsports provides pinout information and ECU setup guidance, while installation is typically integrated into a broader EFI upgrade project.

When removing the original ignition components, these coils work in conjunction with the Adapt Motorsports Ignition Sync Module—installed in the former distributor location—to provide accurate engine position sensing for precise ECU control.

These coils fit securely in the original plug holes. For use as lower coils in twin-plug applications, we recommend adding a retention tab from the lower rocker cover bolt and a heat shield to safeguard the coil from exhaust heat.  

These ignition coils deliver tested reliability, strong spark energy, and proven Bosch performance, making them ideal for enhancing throttle response, tuning accuracy, and ignition efficiency on modified Porsche 911 engines.

What Do COP Ignition Coils Do?
Coil-On-Plug (COP) ignition coils provide a dedicated ignition source at each spark plug, delivering improved spark strength and timing precision compared with older single-coil and distributor systems.

Core Functions:

• Deliver high-energy spark directly at the plug for cleaner combustion.
• Improve ignition timing accuracy with standalone ECU control.
• Support performance tuning, higher RPM stability and EFI upgrades.
• Eliminate the need for ignition leads and distributor-based systems.
• Enhance throttle response, efficiency, and engine smoothness.

These coils modernise classic Porsche 911 engines for performance and reliability aligned with contemporary ignition technology.

Why Do Traditional Porsche Ignition Components Fail?

Original-style ignition systems in 911 G-Models include ageing components prone to deterioration after decades of use.

Common Causes of Failure Include:

• Heat stress weakening ignition coils and internal windings.
  
• Distributor wear, including worn bearings and mechanical advance issues.
  
• Cracked caps or degraded ignition leads causing inconsistent spark delivery.
  
• Oil contamination or moisture ingress.
  
• Spark scatter at high RPM due to mechanical limitations.

When ignition strength deteriorates, drivability, tuning accuracy and engine performance are noticeably compromised.

Why Replace or Upgrade to Adapt Motorsports Direct Fit COP Coils?

Upgrading to a COP conversion offers significant improvements in consistency, efficiency, and performance—particularly in EFI-equipped engines.

Key Benefits:

• High-energy, reliable spark delivery for enhanced combustion.
• Compatible specifically with aftermarket EFI and standalone
• ECUs. Direct-fit Bosch coils proven for durability and performance.
• Secure installation into original spark plug holes.
• Ideal for distributor-delete conversions and modern ignition control.
• Suitable for twin-plug applications with lower-coil retention tab and heat shield (recommended).
• Requires spark plugs with smaller ceramic sections—such as Denso IW22 Iridium—for correct fitment.

These coils are engineered to support modern engine management strategies, making them essential for high-performance or restomod Porsche 911 builds.

Highlights

• Bosch direct-fit COP ignition coils for Porsche 911 G-Model 75–89.
• Designed for aftermarket EFI + standalone ECU conversions.
• Proven, tested performance coils for air-cooled Porsche engines.
• Fit securely into original plug holes.
• Recommended accessories available for twin-plug lower-coil installations.
• ECU pinouts and ignition setup guidance included.
• Ideal for performance engines, restomods and distributor-delete upgrades.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

AMS9050108

The product you are viewing cross references to these numbers

Ignition coil bracket. Perfect reproduction of the original Bosch coil bracket.

Fits:
Porsche 911 1969 - 1989
Porsche 914/6 1970 - 1972
Porsche 930 1976 - 1989
Porsche 964 C2/C4 1989 - 1994
Porsche 944
Porsche 928

Related reference numbers
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PCG602502A

The product you are viewing cross references to these numbers

Ignition coil.

Fits:
Porsche 911 1970-83 / 911 SC
Porsche 930 Turbo 3.0L 1975-77
Porsche 930 Turbo 3.3L 1986-89

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

PCG602502A

The product you are viewing cross references to these numbers

Ignition coil.

Fits:
Porsche 911 1969-83 / 911 SC
Porsche 930 Turbo 3.0L 1975-77
Porsche 930 Turbo 3.3L 1986-89

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

PCG602502A

The product you are viewing cross references to these numbers

Ignition coil Part Number: 901 602 502 00 (often written as 901-602-502-00 or 90160250200). Converts the battery’s 12 V into the high voltage necessary to ignite spark plugs via a Bosch Capacitive Discharge Ignition (CDI) system.

Fits:
Porsche 911 1969-83 / 911 SC
Porsche 930 Turbo 3.0L 1975-77
Porsche 930 Turbo 3.3L 1986-89

Common issues & symptoms of ignition coil failure

• Engine misfires and rough running, caused by inconsistent or weak spark delivery
• Difficulty starting or No start, worn or failing coils may prevent engine ignition, especially when cold
• Check Engine Light (CEL) misfires often trigger fault codes. While older models won’t display modern codes, CEL illumination is still common
• Loss of power / reduced fuel economy, Incomplete combustion leads to reduced performance and increased fuel consumption
• Backfiring or fuel odor, unburned fuel expelled through the exhaust may ignite, resulting in audible backfires or fuel smells 

Related reference numbers
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PCG602502A

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Ignition Coil. Porsche 911 / 930

This coil is designed to replace the Marelli BAE202B ignition coil or Bosch 0221121001. It will work with the Porsche Perma-Tune ignition modules. It is intended to look like original equipment and is a high quality coil made in the USA.

Fits:
Porsche 911 1970-83 / 911 SC
Porsche 930 Turbo 3.0L 1975-77
Porsche 930 Turbo 3.3L 1986-89
Porsche 356 12v Only

Related reference numbers
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PCG602502A

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Ignition coil protection cap.



Fits:
Porsche 911 1974-83
Porsche 911 (930) Turbo 1975-89

Click 'Zoom in' for large parts diagram.
Diagram ref no 12

Related reference numbers
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91160280100

The product you are viewing cross references to these numbers

Ignition coil protection cap.



Fits:
Porsche 911 1974-83
Porsche 911 (930) Turbo 1975-89

Click 'Zoom in' for large parts diagram.
Diagram ref no 12

Related reference numbers
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91160280100

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Ignition Coil. Original SHORT type. (Bracket & decal shown not included)
This type coil is no longer made by Porsche.



Capacitor Discharge Ignition systems use a transformer, the CDI coil has a turns ratio of 100 to 1 so the voltage going in is multiplied 100 times to give you the voltage needed for the Porsche CDI system.
We have developed this coil to work with the Porsche CDI system and give you the strongest, cleanest spark. We stand behind our coil with a 12 month replacement guarantee when used within Porsche factory specifications for the complete system, using a Bosch or our CDI unit, solid core factory ignition wires and the correct spark plugs.
This coil is designed to replace the 901.602.502.00 Bosch coil.
We include the bracket decals and but not the bracket shown on the picture, available separately)

Fits:
Porsche 911 1969-83 / 911 SC
Porsche 930 Turbo 3.0L 1975-77
Porsche 930 Turbo 3.3L 1986-89
Porsche 914/6 1970-76

Related reference numbers
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90160250201

The product you are viewing cross references to these numbers

Ignition coil. This type coil is no longer made by Porsche.



Fits:
Porsche 911 1969-83 / 911 SC
Porsche 930 Turbo 3.0L 1975-77
Porsche 930 Turbo 3.3L 1986-89
Porsche 914/6 1970-76

Related reference numbers
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90160250201

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6 Pin CDI Harness

This harness is designed to be a stand alone replacement wiring harness for the 911SC models using the 6 pin CDI system. Until now the only way to replace a damaged ignition harness on the SC models was to replace the entire engine harness. This is very expensive and time consuming to do. We have designed this harness to allow the mechanic to just replace the wiring harness that controls the ignition function of the vehicle. The harness will plug directly into the CDI Box, The Ignition distributor and coil. The only two connections that will require some plug dis-assembly are the 12V ignition connection at the rear fuse panel and the tachometer signal wire at the 14 pin plug connector. Both of these wires come with the correct connectors installed on the wires.



Fits:
Porsche 911 1978-83
Porsche 930 3.3L 1978-89

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93061205000

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