Ingnition Coils

Ignition Coil Packs. PACK OF 6



Fits:
Porsche Boxster 986 2.5L 1997-99
Porsche Boxster 986 2.7L 1999-02
Porsche Boxster S 986 3.2L 1999-02
Porsche 996 C2 3.4L 1997-08/01
Porsche 996 C4 3.4L 1997-08/01

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99760210405

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Ignition Coils Packs (PACK OF 6). New longer bolts
Porsche 996 / Boxster 986 / Boxster 987 / 996 GT3 MKII



same as 99760210404/1
PACK OF 6

Fits:
Porsche 996 3.6L Inc C2 / C4 / C4S
Porsche 986 Boxster 2.7L / 3.2L 3.4L 2003>>
Porsche 996 GT3 MKI
Porsche 996 GT3 MKII
Porsche 996 Turbo
Porsche 987 Boxster 2.7L / 3.2L
Porsche 987C Cayman 2.7L / 3.4L
Porsche 997 3.6L, 3.8L / 997 GT3

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99760210405

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Ignition coil packs PACK OF 6  (if you require screws order code 90006708901) 

Replacing your ignition coils increases spark amperage by 100%, boosting spark energy for improved ignition and combustion. This is particularly beneficial for forced induction applications but also enhances the performance of naturally aspirated engines.

Designed to boost horsepower and torque throughout the RPM range while reducing fuel consumption. One Ignition coil required per cylinder, meaning six coils are needed for the engine

Fits:
Porsche Boxster 986 2.5L 1997-99
Porsche Boxster 986 2.7L 1999-02
Porsche Boxster S 986 3.2L 1999-02
Porsche 996 C2 3.4L 1997-08/01
Porsche 996 C4 3.4L 1997-08/01

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SERVICEPACK996

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Ignition Coil Packs. PACK OF 6



Porsche Ref: 9A160210407

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 981C Cayman 2014-16

This product supersedes Porsche's old part numbers:
- 9A160210401
- 9A160210402
- 9A160210403


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SERVICEPACK997

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Ignition coil packs PACK OF 6
Porsche Ref: 9A160210407



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 981C Cayman 2014-16

This product supersedes Porsche's old part numbers:
- 9A160210401
- 9A160210402
- 9A160210403


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SERVICEPACK997

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Ignition coil. 6 Required per engine. SET OF 6
The 99760210405 is the individual coil module used on the Porsche M96 and M97 M-series engines in many 986/996/987/early 997 cars. Normally should be replaced as a set of six coils (one per cylinder) 

Why these coils should be replaced 

Age / thermal breakdown: coils are exposed to heat cycles and can develop internal insulation breakdown or hairline cracks in the housing. Over time this causes weak or leaking high voltage and intermittent sparks. 

 Misfire symptoms: a failing coil will cause single-cylinder misfires (P030x codes), rough idle, reduced power, increased fuel consumption and catalytic converter heating/damage if left. These are the most common reasons owners replace coils. 

Carbon tracking / cracking: visible cracks or carbon tracking on the coil boot can provide a leakage path for spark, reducing performance and causing intermittent faults. 

Connector / wiring issues: corroded or loose coil connectors can mimic coil failures; inspect connectors when replacing coils.  

Fits:
Porsche 996 3.6L Inc C2 / C4 / C4S
Porsche 986 Boxster 2.7L / 3.2L 2003>>
Porsche 996 GT3 MKI
Porsche 996 GT3 MKII
Porsche 996 Turbo
Porsche 987 Boxster 2.7L / 3.2L
Porsche 987C Cayman 2.7L / 3.4L
Porsche 997 3.6L, 3.8L / 997 GT3

Does not come with securing bolts.
2 required per coil, please order separately (part number 90006708901).

Common issues reported in practice 

One or more cylinders misfire when the engine is hot but behave quite normally when cold (typical of internal coil failure or heat-sensitive cracks). Cracked coil housings on Boxster/996 cars, owners often replace the entire set for reliability. After a spark plug change, misfires appear because weakened coils can fail once higher-voltage plugs are installed; this is a frequently reported pattern.

How to diagnose (practical steps)

Read codes: P0300 / P0301–P0306 point to misfires; note which cylinder is affected.Swap test: swap the suspected coil with another cylinder’s coil — if the misfire follows the coil, the coil is bad. (Common, quick field test used by owners.)Measure resistance: check primary and secondary coil resistances at ~20°C and compare to the ranges above.Visual inspection: look for cracks, carbon tracking, oil ingress, or damaged boots/connectors.Oscilloscope / HV probe: for deeper diagnosis a scope or HV probe can show spark energy, but most DIY diagnostics use swap + resistance checks. 

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99760210405

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