Ignition Coil Plug. Porsche 911 3.2L 1985-89 / 928 1983-91

Ignition coil 14v. Porsche 911 84-89 / 924S / 944 / 964 / 968 / 928 (Bosch ref: 0221118322)
The OE Match (Bosch style) ignition coil (Bosch MPN 0221118322, Porsche OEM 944.602.115.00 / 944.602.115.01) sold as the direct replacement coil, It’s the high-voltage transformer that converts 12–14 V battery energy into the high voltage a spark plug needs to ignite the air/fuel mix. Please note the Bosch product is no longer available so this is one of the only alternatives. 

Fits:
Porsche 911 1984-89 (not Turbo)
Porsche 924S 1986-88
Porsche 944 1982-91
Porsche 964 C2 / C4 1989-94
Porsche 968 1992-95
Porsche 928 Cars Up to 1988 *2 Ignition Coils Per Car

Replace the coil when any of the following apply:

• Out-of-spec resistance on primary or secondary (measured with DVM). If primary > ~1 Ω or secondary well outside the 5–9 kΩ region.
• Intermittent misfire(s), rough idle, loss of power, or poor fuel economy that follow coil diagnostics. Ignition coils degrade and can produce weak/inconsistent sparks before total failure.
• Check Engine Light with misfire codes (P0300–P030x) that point to a particular cylinder and a coil swap test proves the coil is at fault.
• Visible damage (cracked housing, carbon tracking/arcing, oil contamination of electrical terminals, corroded connectors). These are signs of imminent failure or arcing that can damage plugs/caps.
• Age / preventive maintenance: rubber seals, insulation and internal windings deteriorate with heat and time; on older cars it’s common to replace coils as part of ignition refresh. 

Common failure modes / symptoms

• Cylinder misfires / rough running (single cylinder or random).
• Hard starts or no-start if coil output falls below what’s needed to light the plug.
• Check Engine Light with misfire codes (P0300, P0301… etc).
• Intermittent stalling or power loss under load (coil heating causes intermittent fault).
• Arcing / carbon tracking visible on coil body or cap — can cause cross-firing or misfires.
• Failed connectors / harness corrosion causing poor coil drive — sometimes harness/connectors are the root cause rather than the coil itself. 

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Related, superseded, cross reference or alternative numbers for comparison.

94460211501

The product you are viewing cross references to these numbers

Ignition Coil Protection Cap.



Fits:
Porsche 911 1984-89 (not Turbo)
Porsche 924S 1986-88
Porsche 944 1982-91
Porsche 964 C2 / C4 1989-94
Porsche 964 Carrera RS 1992
Porsche 964 C2 Tiptronic 1990-94
Porsche 968 1992-95

Click "Zoom In" for large parts diagram.
Diagram ref no 2.

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

94460280100

The product you are viewing cross references to these numbers