Engine coolant filler neck lid. Porsche 981 / 982 Boxster / Cayman  ›  98110604406

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

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