Valve cover gasket. Porsche 991.2 Carrera  ❭  9A21055

Valve cover gasket
Genuine Porsche OE valve cover gaskets for Porsche 991.2 Carrera models. These original Porsche gaskets seal the valve cover to the cylinder head, helping prevent engine oil leaks and maintain correct sealing of the upper engine assembly. They are sold separately and correspond to different cylinder banks: 9A21055710  for cylinders 1–3  and 9A210558101 for cylinders 4–6.  These gaskets are used between the valve cover and cylinder head to create an oil-tight seal.

Fits:
Porsche 991.2 Carrera 2017 - 2018

Diagram ref no 9

Functions
•  Seals the valve cover to the cylinder head
•  Helps prevent engine oil leaks from the upper engine area
•  Helps contain oil mist and vapour within the valve cover assembly
•  Maintains correct sealing around the camshaft/valvetrain area
•  Protects surrounding engine components from oil seepage
•  Supports clean and reliable engine operation
•  Provides OE Porsche fitment, material quality and sealing performance
•  Suitable for valve cover removal, resealing or engine repair work.

Why Replace This Part?
Valve cover gaskets are exposed to heat, oil, pressure changes and repeated engine heat cycles. Over time, the gasket can harden, flatten, crack or lose elasticity, allowing oil to seep from the valve cover area. Replacing the gasket with a Genuine Porsche OE valve cover gasket helps restore the correct factory seal and reduces the risk of oil leaks, burning oil smell, smoke from oil contacting hot components or contamination around the engine bay.

When to Replace This Part
•   If there is oil leaking from the valve cover area
•   If oil is visible around the cylinder head or upper engine casing
•   If there is a burning oil smell from oil contacting hot engine or exhaust components
•   During valve cover removal or refitting
•   During cylinder head, camshaft or upper engine service work
•   If the original gasket is hardened, flattened, cracked or damaged
•   When resealing the engine as part of preventative maintenance.

Where It Fits on the Car
These gaskets fit in the engine cylinder head / valve cover area. They are installed between the valve cover and cylinder head on the relevant cylinder bank. The gaskets are bank-specific, so the correct part number must be matched to the correct side/cylinder bank before installation.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9A21055

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