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Engine coolant expansion tank kit with sensor. Porsche 986 Boxster / 987.1 Boxster 1997-06 - COOLTANKKIT986.2.OE
COOLTANKKIT986.2.OE
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 Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
Information
Engine coolant expansion tank kit with sensor.
This kit brings together the expansion tank, cap, long-life coolant, and a coolant level sensor into one complete package.
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 987.1 Boxster 2.7L / 3.2L 2005 - 2006 (9625, 9626)
Diagram ref no 8, 11, 26, 27, 34
This Genuine Porsche kit is designed to fit Porsche vehicles that use 99610614708 as the factory coolant expansion reservoir — most commonly Porsche Boxster 986 (1997-2004) and Boxster 987 (2005-2006) models. Always verify exact model year and engine compatibility before installation.
This kit comprises high-quality Genuine Porsche cooling system components used in the thermal management and fluid monitoring aspects of your engine’s cooling circuit:
• 99610614708 × 1 – Genuine Porsche Coolant Expansion Tank: The official OEM reservoir designed to store excess engine coolant as it expands with heat. It fits precisely into the cooling system and integrates with factory mounting points.
• 99610644704 × 1 – Genuine Porsche Expansion Tank Cap: The correct factory cap for the expansion tank, engineered to maintain proper internal cooling system pressure and ensure a reliable seal under varying thermal conditions.
• 00004330515 × 5 – Genuine Porsche Long-Life Antifreeze (1 L Bottles, Red): Porsche-approved coolant concentrate that, when mixed with distilled water, delivers up to 5 years of corrosion protection, freeze/boil resistance, and thermal stability — helping safeguard vital engine components.
• 99764150300 × 1 – Genuine Porsche Coolant Level Sensor: A factory-original fluid level monitoring sensor that mounts in the expansion tank to provide accurate readings and trigger dashboard warnings if coolant drops below safe levels.
Together, these parts provide a comprehensive service solution for the coolant expansion side of your Porsche’s cooling system.
Original expansion tanks can become brittle, cracked, or discoloured over many heat cycles, leading to leaks, loss of coolant, and poor pressure stability. Failing to replace degraded components can result in engine overheating and reduced cooling system efficiency. Using Genuine Porsche parts ensures a precise match to factory standards and helps maintain consistent cooling performance and fluid integrity - protecting your engine from undue stress and potential damage.
Replace these parts when you notice any of the following conditions:
• Cracks or visible leaks around the expansion tank
• Discolouration or brittleness of plastic components
• Coolant level fluctuations without visible leaks
• Overheating symptoms or reduced cooling performance
• Routine coolant system maintenance interval is due
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
COOLTANKKIT986.2.OE
The product you are viewing cross references to these numbers
This kit brings together the expansion tank, cap, long-life coolant, and a coolant level sensor into one complete package.
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 987.1 Boxster 2.7L / 3.2L 2005 - 2006 (9625, 9626)
Diagram ref no 8, 11, 26, 27, 34
This Genuine Porsche kit is designed to fit Porsche vehicles that use 99610614708 as the factory coolant expansion reservoir — most commonly Porsche Boxster 986 (1997-2004) and Boxster 987 (2005-2006) models. Always verify exact model year and engine compatibility before installation.
This kit comprises high-quality Genuine Porsche cooling system components used in the thermal management and fluid monitoring aspects of your engine’s cooling circuit:
• 99610614708 × 1 – Genuine Porsche Coolant Expansion Tank: The official OEM reservoir designed to store excess engine coolant as it expands with heat. It fits precisely into the cooling system and integrates with factory mounting points.
• 99610644704 × 1 – Genuine Porsche Expansion Tank Cap: The correct factory cap for the expansion tank, engineered to maintain proper internal cooling system pressure and ensure a reliable seal under varying thermal conditions.
• 00004330515 × 5 – Genuine Porsche Long-Life Antifreeze (1 L Bottles, Red): Porsche-approved coolant concentrate that, when mixed with distilled water, delivers up to 5 years of corrosion protection, freeze/boil resistance, and thermal stability — helping safeguard vital engine components.
• 99764150300 × 1 – Genuine Porsche Coolant Level Sensor: A factory-original fluid level monitoring sensor that mounts in the expansion tank to provide accurate readings and trigger dashboard warnings if coolant drops below safe levels.
Together, these parts provide a comprehensive service solution for the coolant expansion side of your Porsche’s cooling system.
Original expansion tanks can become brittle, cracked, or discoloured over many heat cycles, leading to leaks, loss of coolant, and poor pressure stability. Failing to replace degraded components can result in engine overheating and reduced cooling system efficiency. Using Genuine Porsche parts ensures a precise match to factory standards and helps maintain consistent cooling performance and fluid integrity - protecting your engine from undue stress and potential damage.
Replace these parts when you notice any of the following conditions:
• Cracks or visible leaks around the expansion tank
• Discolouration or brittleness of plastic components
• Coolant level fluctuations without visible leaks
• Overheating symptoms or reduced cooling performance
• Routine coolant system maintenance interval is due
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
COOLTANKKIT986.2.OE
99610614708
99610614703
99610614704
99610614705
99610614706
99610614707
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 Boxster 986 / Boxster 987 1997-06 (99610614708)
Unit Price: £287.55
InStock
1 x Coolant bottle cap. Porsche Boxster 986 / Boxster 987 / Cayman 987C / 996 / 997 (99610644704)
Unit Price: £24.16
InStock
1 x Coolant bottle level sensor. Porsche Boxster 986 / Boxster 987 / 996 / 997 (99764150300)
Unit Price: £55.17
InStock
5 x Coolant / Antifreeze 1Ltr Top-up Bottle - Long Life 5 Year Red For Porsche Cars (00004330515)
Unit Price: £14.64
InStock
Price: £440.08
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 Boxster 718 2.0L Manual (300 Bhp) 2017>>
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- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>>
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
- Porsche Boxster Spyder / Spyder RS 718 4.0L 01/2019>>
- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp) 01/2020>>
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp) 01/2020>>
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman 718 2.0L Manual (300 Bhp)
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- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Information
Engine coolant filler neck lid
This original Porsche coolant filler lid, also known as a sealing cap or coolant bottle lid, fits the coolant filler neck and helps seal the coolant access point correctly.
Fits:
Porsche 981 Boxster 2012 - 2016
Porsche 981SP Boxster Spyder 2016
Porsche 981C Cayman 2014 - 2016
Porsche 981 Cayman GT4 2016
Porsche 982 Boxster 2017 - 2024
Porsche 982C Cayman 2017 - 2024
Porsche 982 Spyder 2019 - 2024
Porsche 982 Cayman GT4 2019 - 2024
Diagram ref no 2
This part is used in the coolant filler / water supply tank area on selected Porsche 981 and 982 Boxster / Cayman models.
What This Part Does / Functions:
• Seals the engine coolant filler neck
• Helps prevent coolant splash, seepage or contamination at the filler opening
• Protects the coolant filler neck from dirt and debris
• Supports correct cooling system service access
• Replaces a cracked, damaged, missing or worn original lid
• Helps maintain a clean and properly sealed coolant filler area
• Provides correct OE Porsche fitment and finish
• Supports correct reassembly after coolant system service.
Why Replace This Part?
The coolant filler neck lid is exposed to heat, coolant residue, repeated removal and age-related plastic wear. Over time, the lid can crack, loosen, deform, become difficult to refit or go missing during cooling system service.
Replacing it with an OE Genuine Porsche engine coolant filler neck lid helps restore the correct factory seal and appearance around the coolant filler area.
Common Symptoms of a Worn or Missing Coolant Filler
• Lid Missing coolant filler neck lid
• Cracked or damaged plastic cap
• Lid no longer seats correctly
• Coolant residue around the filler neck
• Dirt or debris entering the coolant filler area.
• Loose or poor-fitting coolant bottle lid
• Damage found during coolant reservoir service
• Incorrect non-original cap fitted.
When to Replace This Part
• If the original lid is cracked, broken or missing
• If the lid no longer fits securely
• During coolant reservoir or filler neck service
• When replacing coolant system trim or access parts
• If the cap has become brittle from age or heat
• After coolant maintenance if the lid is damaged
• During engine bay / service area restoration.
Where It Fits on the Car
This lid fits on the engine coolant filler neck / coolant bottle access area. It is shown in Porsche coolant filler / water supply tank diagrams as diagram reference no. 2. Correct fitment helps keep the coolant filler area sealed, protected and finished to factory standard.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98110604406
The product you are viewing cross references to these numbers
This original Porsche coolant filler lid, also known as a sealing cap or coolant bottle lid, fits the coolant filler neck and helps seal the coolant access point correctly.
Fits:
Porsche 981 Boxster 2012 - 2016
Porsche 981SP Boxster Spyder 2016
Porsche 981C Cayman 2014 - 2016
Porsche 981 Cayman GT4 2016
Porsche 982 Boxster 2017 - 2024
Porsche 982C Cayman 2017 - 2024
Porsche 982 Spyder 2019 - 2024
Porsche 982 Cayman GT4 2019 - 2024
Diagram ref no 2
This part is used in the coolant filler / water supply tank area on selected Porsche 981 and 982 Boxster / Cayman models.
What This Part Does / Functions:
• Seals the engine coolant filler neck
• Helps prevent coolant splash, seepage or contamination at the filler opening
• Protects the coolant filler neck from dirt and debris
• Supports correct cooling system service access
• Replaces a cracked, damaged, missing or worn original lid
• Helps maintain a clean and properly sealed coolant filler area
• Provides correct OE Porsche fitment and finish
• Supports correct reassembly after coolant system service.
Why Replace This Part?
The coolant filler neck lid is exposed to heat, coolant residue, repeated removal and age-related plastic wear. Over time, the lid can crack, loosen, deform, become difficult to refit or go missing during cooling system service.
Replacing it with an OE Genuine Porsche engine coolant filler neck lid helps restore the correct factory seal and appearance around the coolant filler area.
Common Symptoms of a Worn or Missing Coolant Filler
• Lid Missing coolant filler neck lid
• Cracked or damaged plastic cap
• Lid no longer seats correctly
• Coolant residue around the filler neck
• Dirt or debris entering the coolant filler area.
• Loose or poor-fitting coolant bottle lid
• Damage found during coolant reservoir service
• Incorrect non-original cap fitted.
When to Replace This Part
• If the original lid is cracked, broken or missing
• If the lid no longer fits securely
• During coolant reservoir or filler neck service
• When replacing coolant system trim or access parts
• If the cap has become brittle from age or heat
• After coolant maintenance if the lid is damaged
• During engine bay / service area restoration.
Where It Fits on the Car
This lid fits on the engine coolant filler neck / coolant bottle access area. It is shown in Porsche coolant filler / water supply tank diagrams as diagram reference no. 2. Correct fitment helps keep the coolant filler area sealed, protected and finished to factory standard.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98110604406
98110604406
98110604405
98110604404
98110604403
The product you are viewing cross references to these numbers
Price: £22.09
In stock
Vehicle Group
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
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- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
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- Porsche Boxster Spyder / Spyder RS 718 4.0L 01/2019>>
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- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
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- Porsche Cayman T 718 2.0L Manual (300 Bhp)
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- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Information
Water tank filler neck.
Fits:
Porsche 981 Boxster 2012-16
Porsche 981SP Boxster Spyder 2016
Porsche 982 Boxster 2017>>
Porsche 982SP Boxster Spyder 2019>>
Porsche 981C Cayman 2014-16
Porsche 981C Cayman GT4 2016
Porsche 982C Cayman 2017>>
Porsche 982C Cayman GT4 2019>>
Click 'Zoom in' for large parts diagram.
Diagram ref no 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98110615005
The product you are viewing cross references to these numbers
Fits:
Porsche 981 Boxster 2012-16
Porsche 981SP Boxster Spyder 2016
Porsche 982 Boxster 2017>>
Porsche 982SP Boxster Spyder 2019>>
Porsche 981C Cayman 2014-16
Porsche 981C Cayman GT4 2016
Porsche 982C Cayman 2017>>
Porsche 982C Cayman GT4 2019>>
Click 'Zoom in' for large parts diagram.
Diagram ref no 7
Related reference numbers
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98110615005
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Price: £36.17
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- Porsche Cayman T 718 2.0L Manual (300 Bhp)
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- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
Information
Gasket for coolant reservoir cap.
Fits:
Porsche 982 Boxster 2017>>
Porsche 982C Cayman 2017>>
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
982121687
The product you are viewing cross references to these numbers
Fits:
Porsche 982 Boxster 2017>>
Porsche 982C Cayman 2017>>
Diagram ref no 3
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982121687
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Price: £9.09
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- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
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- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
- Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
- Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
Information
Bleed valve for the engine coolant reservoir.
Fits:
Porsche 970 Panamera Diesel 3.0L 2012-16
Porsche 718 (982) Boxster 2.0L 2017>>
Porsche 718 (982) Boxster S 2.5L 2017>>
Porsche 718 (982) Boxster Spyder / RS 4.0L 2019>>
Porsche 718 (982) Boxster GTS 4.0L 2020>>
Porsche 718 (982) Cayman 2.0L 2017>>
Porsche 718 (982) Cayman S 2.5L 2017>>
Porsche 718 (982) Cayman GT4 / RS 4.0L 2019>>
Porsche 718 (982) Cayman GTS 4.0L 2020>>
Diagram ref. 9.
Related reference numbers
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298121671
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Fits:
Porsche 970 Panamera Diesel 3.0L 2012-16
Porsche 718 (982) Boxster 2.0L 2017>>
Porsche 718 (982) Boxster S 2.5L 2017>>
Porsche 718 (982) Boxster Spyder / RS 4.0L 2019>>
Porsche 718 (982) Boxster GTS 4.0L 2020>>
Porsche 718 (982) Cayman 2.0L 2017>>
Porsche 718 (982) Cayman S 2.5L 2017>>
Porsche 718 (982) Cayman GT4 / RS 4.0L 2019>>
Porsche 718 (982) Cayman GTS 4.0L 2020>>
Diagram ref. 9.
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Price: £10.60
Orderable