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Engine coolant expansion tank kit. Porsche 996 2001 >> / 997.1 / 997.2 - COOLTANKKIT997.1
COOLTANKKIT997.1
Vehicle Group
- 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 / 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
Information
Engine coolant expansion tank kit.
This kit includes a direct-fit coolant expansion tank, pressure cap, long-life red antifreeze, and a coolant level sensor, giving you the essential components needed to refresh the coolant reservoir side of the engine cooling system with parts that match the original equipment specifications.
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
Diagram ref no 1, 3, 4, 5, 13, 14, 17.
This OE Match kit is designed for Porsche vehicles that use part number 99610615704 for their coolant expansion reservoir, commonly fitting Porsche 911 models (996 & early 997 series). Always check your vehicle’s specific model year and engine to confirm fitment before purchasing.
This Engine Coolant Expansion Tank Kit combines the essential OE Match components needed for proper cooling system service:
• 99610615704/1 × 1 – OE Match Coolant Expansion Tank incl. Cap (99610644704): Precision-matched coolant reservoir engineered to replicate the original Porsche expansion tank for the 911 (996/997) cooling system. Correct pressure cap that seals the expansion tank and helps maintain proper system pressure to optimise coolant performance.
• 00004330194 × 5 – Comma Antifreeze 1 L Red Concentrate (5-Year Protection): High-quality coolant concentrate designed for long life protection against corrosion, freeze, and boil when mixed with distilled water.
Together, these components ensure your cooling system is refreshed with quality parts that closely match the original performance and characteristics.
This kit helps restore your cooling system’s ability to manage the expansion and contraction of engine coolant as temperature fluctuates. The expansion tank safely captures excess coolant, the pressure cap maintains system integrity and boiling point, and the long-life antifreeze protects internal components from corrosion, overheat or freeze damage.
Over time, the original coolant expansion tank and cap can become brittle, discoloured, cracked or weakened due to repeated heat cycles and coolant exposure. A failing tank may allow coolant loss or air entry into the system, while old or depleted coolant loses protective properties. An OE Match tank and cap restore proper coolant containment and pressure control - and replenishing the coolant with high-quality antifreeze extends protection against corrosion and temperature extremes for years.
Replace this kit when you notice any of the following:
• Cracks, leaks or deformation in the expansion tank
• Pressure cap no longer seals or maintains system pressure
• Coolant appears contaminated, sludgy or past its service life
• Frequent coolant top-ups are required without visible external leaks.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
COOLTANKKIT997.1
The product you are viewing cross references to these numbers
This kit includes a direct-fit coolant expansion tank, pressure cap, long-life red antifreeze, and a coolant level sensor, giving you the essential components needed to refresh the coolant reservoir side of the engine cooling system with parts that match the original equipment specifications.
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
Diagram ref no 1, 3, 4, 5, 13, 14, 17.
This OE Match kit is designed for Porsche vehicles that use part number 99610615704 for their coolant expansion reservoir, commonly fitting Porsche 911 models (996 & early 997 series). Always check your vehicle’s specific model year and engine to confirm fitment before purchasing.
This Engine Coolant Expansion Tank Kit combines the essential OE Match components needed for proper cooling system service:
• 99610615704/1 × 1 – OE Match Coolant Expansion Tank incl. Cap (99610644704): Precision-matched coolant reservoir engineered to replicate the original Porsche expansion tank for the 911 (996/997) cooling system. Correct pressure cap that seals the expansion tank and helps maintain proper system pressure to optimise coolant performance.
• 00004330194 × 5 – Comma Antifreeze 1 L Red Concentrate (5-Year Protection): High-quality coolant concentrate designed for long life protection against corrosion, freeze, and boil when mixed with distilled water.
Together, these components ensure your cooling system is refreshed with quality parts that closely match the original performance and characteristics.
This kit helps restore your cooling system’s ability to manage the expansion and contraction of engine coolant as temperature fluctuates. The expansion tank safely captures excess coolant, the pressure cap maintains system integrity and boiling point, and the long-life antifreeze protects internal components from corrosion, overheat or freeze damage.
Over time, the original coolant expansion tank and cap can become brittle, discoloured, cracked or weakened due to repeated heat cycles and coolant exposure. A failing tank may allow coolant loss or air entry into the system, while old or depleted coolant loses protective properties. An OE Match tank and cap restore proper coolant containment and pressure control - and replenishing the coolant with high-quality antifreeze extends protection against corrosion and temperature extremes for years.
Replace this kit when you notice any of the following:
• Cracks, leaks or deformation in the expansion tank
• Pressure cap no longer seals or maintains system pressure
• Coolant appears contaminated, sludgy or past its service life
• Frequent coolant top-ups are required without visible external leaks.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
COOLTANKKIT997.1
99610615703
99610615704
99610615700
99610615701
99610615702
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
1 x Coolant bottle. Porsche 996 2001 >> / 997.1 / 997.2 (99610615704/2
5 x Antifreeze 1Ltr Concentrate Bottle 5 year Red (00004330194
Price: £113.50
In stock
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Vehicle Group
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 992.1 Carrera 2 3.0L 2019-24
- Porsche 992.1 Carrera 4 3.0L 2019-24
- Porsche 992.1 Carrera 2 Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 4 Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 2S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 2S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Targa 4 3.0L 2020-24
- Porsche 992.1 Targa 4S / GTS 3.0L 2020-24
- Porsche 992.1 Speedster 4.0L 2019-24
- Porsche 992.1 Turbo 3.8L 2020-24
- Porsche 992.1 Turbo S 3.8L 2020-24
- Porsche 992.1 Turbo Cabriolet 3.8L 2020-24
- Porsche 992.1 Turbo S Cabriolet 3.8L 2020-24
- Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
- Porsche 992.1 GT3 RS 4.0L 2022-24
- Porsche 992.1 (911) Sport Classic 3.8L 2023
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
- Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
- Porsche 958 Cayenne GTS V8 4.8L Petrol (400Hp) 2010-17
- Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
- Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17
- Porsche 970.1 Panamera S V8 4.8L 2009-13
- Porsche 970.1 Panamera 4S V8 4.8L 2009-13
- Porsche 970.1 Panamera GTS V8 4.8L 2011-13
- Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
- Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
- Porsche 970.1 Panamera S Hybrid V6 3.0L 2011-13
- Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD (420Hp) 2014-16
- Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD Executive 2014-16
- Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD (420Hp) 2014-16
- Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD Executive 2014-16
- Porsche 970.2 Panamera GTS V8 4.8L 4WD (440Hp) 2014-16
- Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
- Porsche 970.2 Panamera Turbo V8 Executive 2014-16
- Porsche 970.2 Panamera Turbo S V8 4.8L 2014-16
- Porsche 970.2 Panamera S E-Hybrid V6 3.0L (416Hp) 2014-16
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Information
Water Reservoir Bleeder Valve
The water reservoir bleeder valve (7P5121671A / A1216152) is a key cooling
system component that regulates pressure and allows trapped air to escape from
the expansion tank. By ensuring consistent coolant circulation and correct
pressure balance, it prevents overheating and maintains long-term engine
reliability.
Fits:
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster S / GTS 981 3.4L 2012-16
- Porsche 991 Carrera C2 3.4L (350Bhp)
- Porsche 991 Carrera C2S 3.8L (400Bhp)
- Porsche 991 Carrera C4 3.4L (350Bhp)
- Porsche 991 Carrera C4S 3.8L (400Bhp)
- Porsche 991 Turbo 3.8L (520bhp
- Porsche 991 Turbo S 3.8L (560Bhp)
- Porsche 991 GT3 3.8L (475Bhp)
- Porsche 991 GT3 RS 4.0L (500Bhp)
- Porsche 991 Carrera 2 3.0L (370 Bhp)
- Porsche 991 Carrera 2S 3.0L (420 Bhp)
- Porsche 991 Carrera 4 3.0L (370 Bhp)
- Porsche 991 Carrera 4S 3.0L (420 Bhp)
- Porsche 991 Cabriolet 2 3.0L (370 Bhp)
- Porsche 991 Cabriolet 2S 3.0L (420 Bhp)
- Porsche 991 Cabriolet 4 3.0L (370 Bhp)
- Porsche 991 Cabriolet 4S 3.0L (420 Bhp)
- Porsche 991 Targa 4 3.0L (370 Bhp)
- Porsche 991 Targa 4S 3.0L (420 Bhp)
- Porsche 991 Turbo Coupe 3.8L (540 Bhp)
- Porsche 991 Turbo S Coupe 3.8L (580 Bhp)
- Porsche 991 Turbo Cabriolet 3.8L (540 Bhp)
- Porsche 991 Turbo S Cabriolet 3.8L (580 Bhp)
- Porsche 991 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp)
- Porsche 992 Carrera 2 3.0L
- Porsche 992 Carrera 4 3.0L
- Porsche 992 Carrera 2 Cabriolet 3.0L
- Porsche 992 Carrera 4 Cabriolet 3.0L
- Porsche 992 Carrera 2S 3.0L
- Porsche 992 Carrera 4S 3.0L
- Porsche 992 Carrera 2S Cabriolet 3.0L
- Porsche 992 Carrera 4S Cabriolet 3.0L
- Porsche 992 Targa 4 3.0L
- Porsche 992 Targa 4S 3.0L
- Porsche 992 Speedster 4.0L
- Porsche 992 Turbo 3.8L
- Porsche 992 Turbo S 3.8L
- Porsche 992 Turbo Cabriolet 3.8L
- Porsche 992 Turbo S Cabriolet 3.8L
- Porsche 992 GT3 4.0L / 992 S/T 4.0L
- Porsche 992 GT3 RS 4.0L
- Porsche 992 (911) Sport Classic 3.8L
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayenne V6 3.6L Petrol 300Hp
- Porsche Cayenne S V8 4.8L Petrol 400HP
- Porsche Cayenne GTS V8 4.8L Petrol 400HP
- Porsche Cayenne Turbo V8 4.8L Petrol 500HP
- Porsche Cayenne Turbo S V8 4.8L Petrol 550HP
- Porsche Panamera S V8 4.8L
- Porsche Panamera 4S V8 4.8L
- Porsche Panamera GTS V8 4.8L
- Porsche Panamera Turbo V8 4.8L
- Porsche Panamera Turbo S V8 4.8L
- Porsche Panamera S Hybrid V6 3.0L
- Porsche Panamera S V6 Turbo 3.0L 2WD (420Hp)
- Porsche Panamera S V6 Turbo 3.0L 2WD Executive
- Porsche Panamera 4S V6 Turbo 3.0L 4WD (420Hp)
- Porsche Panamera 4S V6 Turbo 3.0L 4WD Executive
- Porsche Panamera GTS V8 4.8L 4WD (440Hp)
- Porsche Panamera Turbo V8 4.8L (520Hp)
- Porsche Panamera Turbo V8 Executive
- Porsche Panamera Turbo S V8 4.8L
- Porsche Panamera S E-Hybrid V6 3.0L (416Hp)
- Porsche Macan S Petrol 3.0L V6 340Bhp
- Porsche Macan S Diesel 3.0L V6 258Bhp
- Porsche Macan Turbo 3.6L V6 400Bhp
Diagram ref no 3
What the Product Does
- Maintains correct cooling system pressure.
- Releases trapped air bubbles for efficient coolant flow.
- Helps protect against overheating and coolant loss.
- Works with the reservoir and radiator to stabilise engine temperature.
Symptoms of a Failing Bleeder Valve
- Coolant leaks around the expansion tank area.
- Engine overheating or fluctuating temperature gauge.
- Gurgling or bubbling noises from the reservoir.
- Low coolant warnings despite no visible leaks.
- Pressure escaping or hissing sounds near the tank cap/valve area.
Common Reasons for Failure
- Seal
Wear: Rubber seals inside the valve degrade with age and heat.
- Cracking:
Plastic housings can crack from repeated heat cycles.
- Contamination:
Dirt or poor coolant quality can cause valve sticking.
- High Mileage: Natural wear from years of pressure fluctuations.
Why Replace?
- Prevents airlocks and overheating that can damage the engine.
- Restores proper cooling system pressure balance.
- Eliminates coolant leaks and protects against costly repairs.
- Ensures long-term system reliability when paired with fresh coolant.
Why Buy from Design 911?
- Porsche
Specialists: We focus exclusively on Porsche, ensuring accurate
fitment.
- OEM
Quality: All parts meet or exceed factory specifications.
- Trusted
Worldwide: Relied upon by Porsche owners, restorers, and workshops.
- Expert
Advice: Backed by a knowledgeable support team to guide your purchase.
- Fast
& Reliable Shipping: Ensuring you get the parts you need quickly.
Ideal For: Cooling system servicing, solving pressure loss issues, or preventive replacement to keep your Porsche running cool and reliable.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
7P5121671B
7P5121671
7P5121671A
7P5121671B
The product you are viewing cross references to these numbers
Price: £11.15
In stock