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- Accessories
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Original Porsche Part Genuine Porsche part 99917001990
• This part is brand new and unused.
• Please verify that it is 100% suitable for your specific vehicle before purchase to ensure compatibility.
Before purchasing thoroughly check part to confirm compatibility.
- We are unable to provide fitting details for this product at this time. Please contact us for further information.
6 Required per engine. Price is for each.

Fits:
Porsche 996 Carrera 3.6L 2001>>
Porsche 987 Boxster 2.7L / 3.2L 2005-08
Porsche 987C Cayman 2.7L / 3.2L 2005-08
Porsche 997 Carrera 3.6L / 3.8L 2005-08
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917022390
The product you are viewing cross references to these numbers
- 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 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 911 T 2.4L 09/1971-08/1973
Porsche 914 2.0L 6 Cyl. 1969-76 (kW 81; Engine 901.36 / 37)
Porsche 924 2.0L 01/1976-08/1985 (kW 92; Engine XK - XJ)
Porsche 944 3.0L S2 12/1988-07/1991 (kW 155; Engine M44.41)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9991700IW22
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 914 (1970-1976)

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 356 1.6L Carrera - / B / C / 1600 GT 1958-1963 (Engine 692/3)
Porsche 356 2.0L Carrera - / B / C / 2000 GS 1958-1963
Porsche 911 2.4L L / T 1972-1973
Porsche 911 2.7L S 09/1973-08/1975 (kW 110)
Porsche 911 3.0L SC 07/1977-07/1983 (kW 132-150)
Porsche 911 3.2L Carrera 08/1984-07/1989 (kW 170; Engine 830.2 / 930.26)
Porsche 911 3.3L Turbo 10/1977-08/1989 (kW 221; Engine 930.60 - 930.66)
Porsche 964 3.3L Turbo 12/1990-08/1992 (kW 235; Engine 30.69)
Porsche 924 2.0L Turbo 02/1979-06/1983 (kW 125-130; Engine M 31.01 / 03)
Porsche 924 2.0L Carrera GT 07/1980-06/1981 (kW 154; Engine M 31.50)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9991700IW24
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- 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 964 (911) TURBO 3.3L 1991-93
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65

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 996 Carrera / 4 3.4L 08/1997 - 07/1999 (Engine M96.01)
Porsche Boxster 986 2.5L i 24V 08/1996 - 07/1999 (Engine M96.20)
Porsche Boxster 986 2.7L i 24V 08/1999 - 07/2002 (Engine M96.22)
Porsche Boxster S 986 3.2L i 24V 08/1999 - 07/2002 (Engine M96.21)
Porsche 955 Cayenne S 4.5L 05/2002 - 05/2006 (Engine M48.00)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9991700IK20
The product you are viewing cross references to these numbers
- 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
- Porsche 955 Cayenne S 4.5L V8 2003-06

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 911 Carrera 2.7 RS 09/1972-08/1975 (kW 154)
Porsche 911 Turbo 3.3L 10/1977-08-1989 (kW 221; Engine 930.60 - 930.66)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9991700IW27
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1978-1989 3.3L Turbo (930)

Ultra Fine Electrode
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.
PACK OF 6
Porsche 965 3.3L Turbo (M30.69)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9991700IW24x6
The product you are viewing cross references to these numbers
- Porsche 964 (911) TURBO 3.3L 1991-93

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.
PACK OF 8
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

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.
PACK OF 6
Fits:
Porsche 964 C2 / C4 3.6L 12/1988-09/1993 (kW 184; Engine 64.02 / 64.01) *Requires 12 pcs
Porsche 964 Carrera RS 3.6L 08/1991-09/1993 (kW 191; Engine 64.03) *Requires 12 pcs
Porsche 993 C2 3.6L 08/1993-08/1997 (kW 200; Engine M 64.05 / 06) *Requires 12 pcs
Porsche 993 C4 / Targa 3.6L 08/1995-08/1997 (kW 210; Engine M 64.21 / M 64.22) *Requires 12 pcs
Porsche 993 C4 3.8L 08/1995-08/1997 (kW 210; Engine M 64.05 S / M 64.06 S) *Requires 12 pcs
Porsche 993 C4 / RS / Targa 3.8L 08/1995-08/1997 (kW 221; Engine 64.2) *Requires 12 pcs
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 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.
PACK OF 6
Fits:
Porsche 911 T 2.4L 09/1971-08/1973
Porsche 914 2.0L 6 Cyl. 1969-76 (kW 81; Engine 901.36 / 37)
Porsche 924 2.0L 01/1976-08/1985 (kW 92; Engine XK - XJ)
Porsche 944 3.0L S2 12/1988-07/1991 (kW 155; Engine M44.41)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9991700IW22
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 914 (1970-1976)
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