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Porsche // 964 (911) (1989-1994) // Any
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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: £69.47
Related products
Vehicle Group
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Information
Engine crankcase gasket set.
Fits:
Porsche 911 1978-89
Porsche 964 1989-94
Porsche 993 1994-98
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010090104
The product you are viewing cross references to these numbers
Fits:
Porsche 911 1978-89
Porsche 964 1989-94
Porsche 993 1994-98
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010090104
93010090104
105.571
The product you are viewing cross references to these numbers
Price: £39.95
In stock
Vehicle Group
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
Information
Engine gasket set. Head Set (Top end).
Fits:
Porsche 964 C2 / C4 1989-94
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410090200
The product you are viewing cross references to these numbers
Fits:
Porsche 964 C2 / C4 1989-94
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410090200
96410090200
02-29155-01
022915501
The product you are viewing cross references to these numbers
Price: £399.16
In stock
Vehicle Group
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
Information
Engine chain cover gasket. Fits: Left and Right side
Fits:
Porsche 964 1989-94
Porsche 993
Click 'Zoom in' for large parts diagram.
Diagram ref no 16
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410518101
The product you are viewing cross references to these numbers
Fits:
Porsche 964 1989-94
Porsche 993
Click 'Zoom in' for large parts diagram.
Diagram ref no 16
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410518101
96410518101
96410518200
96410518201
471.200
The product you are viewing cross references to these numbers
Price: £19.60
In stock
Vehicle Group
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
Information
Camshaft cover gasket - UPPER (6 per Engine)
Fits:
Porsche 964 C2/C4 1990-94 (6 per Engine)
Porsche 964 Turbo 1993-94 (6 per Engine)
Click 'Zoom in' for large parts diagram.
Diagram Ref No 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410517301
The product you are viewing cross references to these numbers
Fits:
Porsche 964 C2/C4 1990-94 (6 per Engine)
Porsche 964 Turbo 1993-94 (6 per Engine)
Click 'Zoom in' for large parts diagram.
Diagram Ref No 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410517301
96410517301
71-29001-00
712900100
The product you are viewing cross references to these numbers
Price: £8.53
In stock