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Denso
Denso for Porsche
Denso parts for Porsche models from Design911, focusing on ignition and related components where listed to help maintain dependable, accurate engine running.
A Quick Look at Denso
Denso information on this page is based on details supplied by the manufacturer or distributor, plus any OE references provided with the parts.
Choosing the Right Fit for Your Porsche
Where Denso is listed for Porsche, use the supplied model coverage and OE references to confirm suitability. Check details that commonly affect fitment such as model year, side/position, and connector type where relevant.
- Typical reasons to choose these parts include curing misfires, improving cold starts, and restoring stable engine management readings where Denso ignition and sensor components are specified.
- Common symptoms that lead owners to these parts include hesitation, rough idle, poor economy, warning lights, and intermittent running faults that may worsen with heat.
- When diagnosing running issues, it is sensible to check spark plugs, coil packs, vacuum lines, and connector condition alongside any Denso components you plan to replace.
- Before fitting new parts, inspect wiring, connectors and basic service items so that new components are not masking unresolved underlying problems.
- Combining ignition work with scheduled servicing, including replacement of worn plugs and filters, often resolves multiple overlapping symptoms in one visit.
- Misfire or drivability problems at high load may relate to plug condition, incorrect gap or heat range, or coil stress, so check these details before and after installation.
Browse by Category
If you already know the area you are working on, start with the category and then filter by Porsche model. Where real-world symptoms and typical reasons to replace are provided, use them to keep the wording grounded.
Chassis / Bodywork
Chassis and bodywork parts are generally used to repair accident damage, corrosion or structural issues so the Porsche shell remains straight and safe while allowing restoration or cosmetic work as required.
Engine Tuning
Engine tuning components are chosen to improve drivability, economy or throttle response, or to support other hardware changes, and they must be matched carefully to a healthy Porsche engine so calibration does not attempt to mask mechanical faults.
IRIDIUM POWER Spark Plugs
IRIDIUM POWER spark plugs for Porsche are typically selected for consistent spark and long service life, helping to maintain smooth starting, clean combustion and stable idle when correctly matched to the engine specification.
- Review plug condition and heat range if you notice misfires, rough idle, hesitation or rising fuel consumption, especially under load.
- When replacing plugs, follow guidance on gap, torque and installation, and check coils, compression and vacuum leaks if misfires persist.
Service Parts
Service parts cover routine maintenance items such as filters, plugs, belts and fluids that keep a Porsche reliable and efficient, and replacing them on schedule often resolves overlapping symptoms like poor starting, uneven idle and reduced economy.
- Use correctly specified OEM or reputable aftermarket components and keep a clear service log to support diagnostics and vehicle history.
- If the car is used hard or mainly on short journeys, consider servicing more frequently than the basic interval suggested in the owner information.
Explore Denso at Design911
View the current Denso range for Porsche at Design911, then filter by model and category to narrow down to the right parts.

By harnessing the power of Iridium, DENSO is suddenly able to shrink the surface area of the center electrode - the critical component of a spark plug. Unlike a typical platinum plug that has a 1.1mm diameter center electrode, DENSO Iridium Power plugs have the world's smallest center electrode measuring 0.4mm in diameter. This means that the voltage requirements are decreased while firing performance is greatly improved.
Fits:
Porsche 964 C2 / C4 3.6L 12/1988-09/1993 (kW 184; Engine 64.02 / 64.01)
Porsche 964 Carrera RS 3.6L 08/1991-09/1993 (kW 191; Engine 64.03)
Porsche 993 C2 3.6L 08/1993-08/1997 (kW 200; Engine M 64.05 / 06)
Porsche 993 C4 / Targa 3.6L 08/1995-08/1997 (kW 210; Engine M 64.21 / M 64.22)
Porsche 993 C4 3.8L 08/1995-08/1997 (kW 210; Engine M 64.05 S / M 64.06 S)
Porsche 993 C4 / RS / Targa 3.8L 08/1995-08/1997 (kW 221; Engine 64.2)
Porsche 993 Turbo 3.6L 02/1993-08/1997 (kW 265; Engine 64.5)
Porsche 996 Turbo 3.6L 06/2000>> (kW 309; Engine M 96.7)
Porsche 993 GT2 3.6L 04/2001>> (kW 340)
Porsche 997 C2 / C4 3.6L 07/2004>> (kW 239; Engine M 96.05)
Porsche 997 C2 / C4 3.8L 07/2004>> (kW 261; Engine M 97.01)
Porsche 987C Cayman 2.7L 07/2006>> (kW 180)
Porsche 987C Cayman S 3.4L 11/2005>> (kW 217)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9991700IK22
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- 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 Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08

By harnessing the power of Iridium, DENSO is suddenly able to shrink the surface area of the center electrode - the critical component of a spark plug. Unlike a typical platinum plug that has a 1.1mm diameter center electrode, DENSO Iridium Power plugs have the world's smallest center electrode measuring 0.4mm in diameter. This means that the voltage requirements are decreased while firing performance is greatly improved.
Fits:
Porsche Cayenne 955 4.5L S 09/2002>> (kW 250; Engine M48.00)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9991700IK16
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne S 4.5L V8 2003-06