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Ignition Coils
By OE Match
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
A complete OE Match heat shield set designed to protect ignition components, supplied with the correct genuine Porsche mounting bolts for secure installation on Porsche 996 3.6L models.
SET OF 2 heat shields with Genuine Porsche hardware
Fits:
Porsche 996 3.6L Carrera 2 / 4 / 4S 2002 - 2005
* Engine code: 9603
Diagram ref no 31 and 37
The OE Match Cylinder Heat Shield Kit for Porsche 996 3.6L (2002 onwards) provides a complete solution for replacing worn or corroded ignition heat shields, ensuring proper protection of coil packs and surrounding engine components.
This kit includes two OE Match 99610444502 heat shields, designed to fit both left and right cylinder banks. These shields are mounted over the ignition coil packs and act as a barrier against radiant engine heat, helping maintain stable ignition performance and preventing premature failure of sensitive components.
To ensure correct installation, the kit also includes four genuine Porsche hexagon-head bolts (90037816301, M6 x 16). These bolts provide secure mounting and proper clamping force, essential in high-temperature engine environments.
Heat shields in this area are exposed to extreme heat cycles and moisture, often leading to corrosion or deterioration over time. Replacing them as a pair, along with fresh hardware, ensures consistent protection across both cylinder banks and avoids issues caused by weakened or seized fasteners.
This OE Match kit is ideal for maintenance, ignition system servicing, or preventative replacement on higher mileage vehicles.
Original heat shields commonly corrode, weaken, or fail due to constant exposure to heat and moisture. A damaged or missing shield can lead to overheating of ignition coils, increasing the risk of misfires and reduced engine reliability. Replacing both shields together, along with new mounting bolts, ensures proper thermal protection and prevents issues caused by worn or seized hardware.
When to replace:
• Visible rust, corrosion, or deterioration
• Missing or loose heat shields
• Ignition coil issues related to heat exposure
• During coil pack replacement or servicing
• Preventative maintenance on high-mileage engines
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610444502
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
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.Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99760210405
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
This OE Match Heat shield for the engine cylinder area is designed to protect ignition coil packs and surrounding components from heat exposure in Porsche 996 and 997 models.
Sold individually, Fits left or right side.
Fits:
Porsche 996 3.6L Carrera 2 / 4 / 4S 2002 - 2005 (Engine code: 9603)
Porsche 997.1 3.6L Carrera 2 / 4 2005 - 2008 (Engine code: 9605)
Porsche 997.1 3.8L Carrera 2S / 4S 2005 - 2008 (Engine code: 9701)
Diagram ref no 37
This product supersedes Porsche's old part number: 99610444501
The OE Match 99610444502 Heat Shield for Cylinder is a high-quality replacement component developed to replicate original Porsche specifications for fit, durability, and thermal protection. Installed on the cylinder head area, this shield acts as a protective barrier between the engine and sensitive ignition components.
Positioned directly over the ignition coil packs, this heat shield helps deflect radiant heat generated by the engine, preventing excessive temperature buildup that could affect ignition performance. It also provides protection against moisture and debris, which can contribute to premature wear or failure of ignition components.
Designed for both banks of the engine, this component fits either the left or right side, making it a versatile and essential part for maintenance or replacement. It is commonly used on Porsche 996 3.6L engines and 997 Gen 1 3.6L and 3.8L models, and supersedes earlier part number 99610444501.
Due to its location in the engine bay, the original shield is exposed to constant heat cycles and environmental conditions, making it prone to corrosion and deterioration over time. Replacing it with an OE Match unit ensures continued protection and optimal engine performance.
This heat shield protects ignition coil packs and surrounding engine components from excessive heat, helping maintain reliable ignition performance and component longevity.
Function
• Shields ignition coil packs from engine heat
• Deflects radiant heat away from sensitive components
• Protects against moisture, dirt, and debris
• Helps maintain consistent ignition performance
• Reduces risk of heat-related component failure
Heat shields in this location are highly exposed to extreme temperature changes and moisture, making them prone to rust and deterioration. A damaged or missing shield can lead to overheating of ignition components, reduced reliability, and potential misfires.
Replacing the heat shield ensures proper thermal protection and helps extend the lifespan of ignition coils and surrounding components.
When to replace
• Visible rust, corrosion, or deterioration
• Missing or damaged heat shield
• Ignition coil issues related to heat exposure
• During coil pack replacement or engine service
• Preventative maintenance on high-mileage vehicles
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610444502
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99760210405
The product you are viewing cross references to these numbers
OEMatch Ignition Coils — Fit, Function, Confidence
OEMatch ignition coils for Porsche models support consistent spark delivery and smooth running when maintaining or repairing the ignition system.
- Individual ignition coils
Understanding OEMatch Ignition Coils
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original ignition coils. OE (Original Equipment) refers to parts matching original specifications for the ignition coils and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM ignition coils engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models. Many owners search for genuine or OEM ignition coils; these are direct-fit alternatives designed to match the original form, fit and function. In a modern Porsche engine, each ignition coil converts battery voltage into the high voltage needed for the spark plugs. Correct operation helps the engine start reliably, idle smoothly and respond predictably to throttle input. Over time, heat and vibration can affect the insulation and electronics inside the coil, making dependable replacements important for ongoing use.
- Support stable engine starting
- Help maintain smooth idle and response
- Allow targeted replacement of faulty coils
Why Ignition Coils Wear and Fail
- Thermal cycling and vibration gradually affecting internal windings and electronics
- Oil or moisture ingress where seals or covers are compromised
- Age-related degradation of plastics and insulation around the coil body or connector
The Importance of Replacing with OEMatch Ignition Coils
When an ignition coil in a Porsche begins to weaken or fail, symptoms can include misfires, loss of power or rough running. Prolonged driving with a weak spark may contribute to unburnt fuel reaching the exhaust system. Replacing ageing or faulty coils with new OEMatch parts helps restore consistent ignition, supporting day-to-day drivability and helping the engine’s management system work as intended.
- Made to original-spec dimensions for straightforward installation
- Fits original mounting points and clearances
- Compatible with factory electrical connectors
Support & Advice
Fitting ignition components affects critical engine systems. Installation should be carried out by a qualified technician following model-specific procedures and torque settings. Use calibrated tools and new fasteners where specified.
