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Porsche // 997 (911) MK1 2005-2008 // 997 MK1 GT2 2007-09
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Series resistor. Porsche 986 Boxster / 996 - 99661610100
99661610100
Vehicle Group
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- 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 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Information
Series resistor for front cooler fan.
The Genuine Porsche 99661610100 is the factory-spec series resistor used to control the speed of the auxiliary radiator (cooling) fan on select Porsche 986 Boxster and 996 Carrera / 996-series models.
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 996 C2 / C4 / C4S 1998 - 2005
Porsche 996 GT3 / GT3 RS 1999 - 2005
Diagram Ref No 4.
This resistor modulates the electrical current to the cooling fan, allowing the fan to run at different speeds (low and high) depending on engine and coolant temperature demands. By enabling variable fan speed instead of only full-speed operation, it helps regulate engine temperature more precisely, reduces noise when full cooling isn’t required, and ensures efficient radiator airflow under load or idle conditions.
Replace the resistor when:
• The cooling fan only works at high speed or fails to run at low speed (indicating resistor failure).
• Fan runs intermittently or erratically, or coolant temperatures climb under idle/traffic conditions.
• Heat-related failures (resistor overheated, wiring insulation damaged) or exposure to moisture/age has degraded the resistor.
• Cooling system overhaul: radiator or fan motor replacement, or when restoring an older 986/996 to maintain OEM reliability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99661610100
The product you are viewing cross references to these numbers
The Genuine Porsche 99661610100 is the factory-spec series resistor used to control the speed of the auxiliary radiator (cooling) fan on select Porsche 986 Boxster and 996 Carrera / 996-series models.
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 996 C2 / C4 / C4S 1998 - 2005
Porsche 996 GT3 / GT3 RS 1999 - 2005
Diagram Ref No 4.
This resistor modulates the electrical current to the cooling fan, allowing the fan to run at different speeds (low and high) depending on engine and coolant temperature demands. By enabling variable fan speed instead of only full-speed operation, it helps regulate engine temperature more precisely, reduces noise when full cooling isn’t required, and ensures efficient radiator airflow under load or idle conditions.
Replace the resistor when:
• The cooling fan only works at high speed or fails to run at low speed (indicating resistor failure).
• Fan runs intermittently or erratically, or coolant temperatures climb under idle/traffic conditions.
• Heat-related failures (resistor overheated, wiring insulation damaged) or exposure to moisture/age has degraded the resistor.
• Cooling system overhaul: radiator or fan motor replacement, or when restoring an older 986/996 to maintain OEM reliability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99661610100
99661610100
The product you are viewing cross references to these numbers
Price: £163.48
Orderable
Related products
Vehicle Group
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII GT2 RS 2011-13
Information
Radiator water transmission.
Fits:
Porsche 996 Turbo / GT2 1998-05
Porsche 997 GT2 / GT2 RS 2008-11
Porsche 997 GT3 3.6L 2007-09
Porsche 997 GT3 / GT3 RS 3.8L 2010-11
Porsche 997 GT3 RS 4.0L 2011
Click 'Zoom in' for large parts diagram.
Diagram Ref No 1.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610603775
The product you are viewing cross references to these numbers
Fits:
Porsche 996 Turbo / GT2 1998-05
Porsche 997 GT2 / GT2 RS 2008-11
Porsche 997 GT3 3.6L 2007-09
Porsche 997 GT3 / GT3 RS 3.8L 2010-11
Porsche 997 GT3 RS 4.0L 2011
Click 'Zoom in' for large parts diagram.
Diagram Ref No 1.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610603775
99610603773
99610603775
50595
8MK376765111
8MK 376 765-111
The product you are viewing cross references to these numbers
Price: £754.18
Orderable
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- 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
Information
Radiator water fan.
Fits:
Porsche 987 Boxster 2005>>
Porsche 987C Cayman 2005>>
Porsche 997 2005-08
Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99762412
The product you are viewing cross references to these numbers
Fits:
Porsche 987 Boxster 2005>>
Porsche 987C Cayman 2005>>
Porsche 997 2005-08
Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99762412
99762412702
99762412802
The product you are viewing cross references to these numbers
Prices from: £383.93
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- 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 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Information
Radiator water fan cowling.
Fits:
Porsche 987.1 Boxster 2005-08
Porsche 987.2 Boxster 2009-12
Porsche 987C.1 Cayman 2006-08
Porsche 987C.2 Cayman 2009-12
Porsche 997.1 2005-08
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99762413
The product you are viewing cross references to these numbers
Fits:
Porsche 987.1 Boxster 2005-08
Porsche 987.2 Boxster 2009-12
Porsche 987C.1 Cayman 2006-08
Porsche 987C.2 Cayman 2009-12
Porsche 997.1 2005-08
Porsche 997.2 2009-12
Click 'Zoom in' for large parts diagram.
Diagram ref no 3.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99762413
99762413102
99762413202
The product you are viewing cross references to these numbers
Prices from: £163.44
Vehicle Group
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- 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 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche Carrera GT 2003-06
Information
Grommet. 14 x 20.5 x 7.5
Fits:
Porsche 996 1998-05
Porsche 986 Boxster 1997>>
Porsche 997 Turbo / GT2
Porsche Carrera GT
Click pictrue for large parts diagram.
Diagram Ref No 15.
Fits:
Porsche 996 1998-05
Porsche 986 Boxster 1997>>
Porsche 997 Turbo / GT2
Porsche Carrera GT
Click pictrue for large parts diagram.
Diagram Ref No 15.
Price: £4.27
In stock