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Porsche // 996 (911) (1997-2005) // 996 GT3 MKII 2003>>
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Radiator water. Porsche 924S / 944 *MANUAL CARS High Efficiency Aluminium › 94410603104
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
This high-efficiency aluminium water-radiator is designed for Porsche 924S and Porsche 944 (manual gearbox) models. It reproduces Porsche’s factory specification—featuring correct core size, inlet/outlet positions, mounting bracket fitment and cooling performance. This radiator ensures proper engine cooling, consistent operating temperatures and long-term reliability.
Fits:
Porsche 924S (2.5L) 1986 - 1988 Manual gearbox
Porsche 944 (2.5L / 2.7L) 1982 - 1989 Manual gearbox
Diagram Ref No 1.
• Position on Vehicle: Front engine bay, part of the cooling system; mounted at the front of the engine to exchange engine coolant heat with ambient air.
• Applications: Ideal replacement when the original radiator is corroded, leaking, cracked, clogged, or when upgrading cooling performance for spirited driving, restoration or reliability-focused maintenance.
A properly functioning radiator is vital for managing engine heat, maintaining coolant flow and preventing overheating. A degraded radiator can cause elevated temperatures, coolant loss, reduced performance and potential engine damage. Replacing radiator restores correct cooling capacity, protects your engine and supports long-term performance.
When and why to replace:
• Coolant leaks visible around the radiator or mounting points
• Engine temperature running higher than normal or cooling system unable to maintain stable temp
• Radiator shows corrosion, internal blockage, bent fins or damage
• Upgrading to maintain optimum cooling performance for high-load driving or restoration
• Preventative maintenance on higher-mileage or track-used vehicles
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410603104
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 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 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Fits:
Porsche 996 C2 / C4 / GT3 1997-05
Porsche 986 Boxster 1997-2004
Radiator fluid, or coolant, is the most important part of your car's cooling system, which protects your engine from overheating. Low coolant can lead to a breakdown and expensive repairs.
Click 'Zoom in' for large parts diagram.
Diagram Ref No 1.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610613
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 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 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Left or Right
Fits:
Porsche 986 Boxster 1997-05
Porsche 996 C2, C4, GT3 1997-05
Click pictrue for large parts diagram.
Diagram Ref No 7.
Please select below
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99650417
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 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 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Fits:
Porsche 986 Boxster 1997-2004
Porsche 996 C2, C4, GT3 1998-05
Click 'Zoom in' for large parts diagram.
Diagram ref no 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99662413500
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 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
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
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