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Engine coolant expansion tank kit. Porsche 996 1997 - 2000 ❭ COOLTANKKIT996.1.OE
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 GT3 MKI 1999-02
This kit includes the expansion tank reservoir, pressure cap, and multiple bottles of genuine Porsche coolant/antifreeze - everything needed for a full coolant system refresh
Fits:
Porsche 996 C2 / C4 1997 - 2000
Porsche 996 GT3 MKI 1997 - 2000
Diagram ref no 1, 3, 4, 5, 9, 11, 12.
This kit is suitable for Porsche models that use part 99610614756 as the coolant expansion tank reservoir.
Kit Includes:
• 99610614756 × 1 - Genuine Porsche Coolant Expansion Tank Bottle: Factory-spec reservoir engineered to handle coolant expansion and contraction as engine temperatures fluctuate.
• 99610644704 × 1 - Genuine Porsche Expansion Tank Cap: Provides reliable system pressure control in the cooling system to maintain boiling point and prevent coolant loss.
• 00004330515 × 5 - Genuine Porsche Antifreeze Coolant 1 Litre (Red, Long Life, 5-Year Protection): High-quality coolant concentrate designed to be mixed 50/50 with distilled water for excellent heat transfer, freeze/boil protection, and corrosion resistance.
This kit restores key components of the engine’s coolant reservoir system. The expansion tank collects and stores excess coolant as it expands during heating, the pressure cap maintains proper system pressure to raise the coolant’s boiling point, and the antifreeze delivers long-lasting thermal protection and corrosion control. Using genuine Porsche coolant ensures fluid chemistry is matched to factory specifications.
With age and heat cycling, the original expansion tank and cap can become brittle, cracked, or unable to maintain proper pressure, leading to coolant loss, air ingress, and potential overheating issues. Using genuine Porsche coolant ensures the fluid meets manufacturer chemistry standards for corrosion protection and performance. Replacing these components with genuine parts helps restore the cooling system’s integrity and protects the engine from thermal stress and premature wear.
Replace these components if you notice any of the following:
• Visible cracks, leaks, or discoloration on the expansion tank
• Pressure cap that no longer seals properly
• Coolant that looks contaminated or past its service life
• Unexplained coolant loss or coolant level fluctuations
• Scheduled cooling system maintenance interval reached
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
COOLTANKKIT996.1.OE
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 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- 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 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 2010-11
- Porsche 997 MKII Turbo 2010-13
The Genuine Porsche coolant expansion tank is the factory-specified reservoir used in the cooling system of Porsche 911 (996) and 997 models. This tank provides the correct fluid volume, pressure stability, and thermal expansion control required to maintain safe and efficient engine cooling. Manufactured to Porsche’s exacting standards, it ensures perfect fitment, correct hose connection points, accurate coolant-level visibility, and long service life even under continuous heat cycling.
Fits:
Porsche 996 3.6L C2 / C4 / C4S 2001 - 2005
Porsche 996 Turbo 2001 - 2005
Porsche 996 GT2 2001 - 2005
Porsche 996 GT3 MKII / GT3 RS 2001 - 2005
Porsche 997.1 2005 - 2008 all models
Porsche 997.2 2009 - 2012 all models
Every car has its weak points, and although the Boxster and 996 has very few, one of the items to keep an eye on is the coolant recovery tank. Over time it becomes brittle and has a tendency to crack and leak coolant into the rear trunk area in the Boxster. A simple preventative measure is to replace your tank with a genuine Porsche recovery tank.
This product supersedes Porsche's old part numbers:
- 99610615700, 99610615701, 99610615702, 99610615703, 99610615704
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610615704
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 Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- 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 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 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08

Fits:
Porsche 996 1998-05
Porsche 997 2005>>
Porsche 986 Boxster 1997-04
Porsche 987 Boxster 2005>>
Porsche 987C Cayman 2005>>
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610644704
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 Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- 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 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 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08

Fits:
Porsche 996 1998-05
Porsche 997 MKI 2005>>
Porsche 986 Boxster 1997-04
Porsche 987 Boxster 2005>>
Porsche 987C Cayman 2005>>
This product supersedes Porsche's old part numbers:
- 99610634700
- 99610634701
Click 'Zoom in' for large parts diagram.
Diagram ref no 3, 4, 11 and 12.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610634702
The product you are viewing cross references to these numbers
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