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Valve cover gasket. Porsche 991.2 Carrera - 9A21055
9A21055
Vehicle Group
- 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
Information
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
The product you are viewing cross references to these numbers
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
9A210557100
9A210557101
9A210558100
9A210558101
The product you are viewing cross references to these numbers
Prices from: €82.67
Related products
Vehicle Group
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
Information
Engine head gasket. Cylinder 1-3 or 4-6.
1 per engine.
Fits:
Porsche 996 C2 / C4 3.4L 1998-01 (M96.01/02/04)
This product supersedes Porsche's old part numbers:
- 99610427005 (1-3 Cyl.) / 99610426900 (4-6 Cyl.)
Click 'Zoom in' for large parts diagram.
Diagram ref no 24.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9961042
The product you are viewing cross references to these numbers
1 per engine.
Fits:
Porsche 996 C2 / C4 3.4L 1998-01 (M96.01/02/04)
This product supersedes Porsche's old part numbers:
- 99610427005 (1-3 Cyl.) / 99610426900 (4-6 Cyl.)
Click 'Zoom in' for large parts diagram.
Diagram ref no 24.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9961042
99610427006
99610427005
99610426901
99610426900
530.691
530.701
The product you are viewing cross references to these numbers
Prices from: €85.58
Vehicle Group
- Porsche 996 TURBO 2000-05
Information
Exhaust gasket for manifold.
Price is for each.
Fits:
Porsche 996 Turbo
Diagram ref no 6
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611121770
The product you are viewing cross references to these numbers
Price is for each.
Fits:
Porsche 996 Turbo
Diagram ref no 6
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611121770
99611121770
The product you are viewing cross references to these numbers
Price: €40.28
In stock
Vehicle Group
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- 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 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche Cayman S 3.4L 987C 2005-08
Information
Engine head gasket. Fits: cylinder 1-3 or 4-6.
2 per engine.
Fits:
Porsche 987 Boxster S 3.4L 2006-08 (M97.21)
Porsche 987 Boxster S 3.4L RS SPYDER 2008 (M97.22)
Porsche 987C Cayman S 3.4L 2006-08 (M97.21)
Porsche 996 3.6L C2 / C4 / C4S 2002-05 (M96.03)
Porsche 997 C2 / C4 3.6L Coupe/Cabrio 2005-08 (M96.05)
This product supersedes Porsche's old part numbers:
- 99610420102
Click 'Zoom in' for large parts diagram.
Diagram ref no 19
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610420104
The product you are viewing cross references to these numbers
2 per engine.
Fits:
Porsche 987 Boxster S 3.4L 2006-08 (M97.21)
Porsche 987 Boxster S 3.4L RS SPYDER 2008 (M97.22)
Porsche 987C Cayman S 3.4L 2006-08 (M97.21)
Porsche 996 3.6L C2 / C4 / C4S 2002-05 (M96.03)
Porsche 997 C2 / C4 3.6L Coupe/Cabrio 2005-08 (M96.05)
This product supersedes Porsche's old part numbers:
- 99610420102
Click 'Zoom in' for large parts diagram.
Diagram ref no 19
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610420104
99610420104
99610420102
808.293
The product you are viewing cross references to these numbers
Price: €106.28
Orderable