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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: £70.07
Related products
Vehicle Group
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
Information
Engine head gasket set.
Fits:
Porsche 924S 1986-88
Porsche 944 2.5L 1982-88
Gasket set includes:
95110437402 - Head gasket
92810419312 - Valve stem seal x8
92811119312 - Exhaust Manifold to head gasket x4
94411113501 - Down pipe gasket x2
94410519903 - Camshaft housing gasket
94411016305 - Intake manifold gasket x4
92810619704 - Thermostat housing gasket
94410431106 - Coolant inlet housing gasket
92810518400 - Camshaft housing o-ring
99970160240 - Camshaft seal ring
99911328240 - Shaft sealing ring
92810518902 - Camshaft housing rear cork gasket
94410532100 - Gasket
90012314030 - Cam housing screw plug sealing ring
99970146840 - Throttle housing seal
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410090100
The product you are viewing cross references to these numbers
Fits:
Porsche 924S 1986-88
Porsche 944 2.5L 1982-88
Gasket set includes:
95110437402 - Head gasket
92810419312 - Valve stem seal x8
92811119312 - Exhaust Manifold to head gasket x4
94411113501 - Down pipe gasket x2
94410519903 - Camshaft housing gasket
94411016305 - Intake manifold gasket x4
92810619704 - Thermostat housing gasket
94410431106 - Coolant inlet housing gasket
92810518400 - Camshaft housing o-ring
99970160240 - Camshaft seal ring
99911328240 - Shaft sealing ring
92810518902 - Camshaft housing rear cork gasket
94410532100 - Gasket
90012314030 - Cam housing screw plug sealing ring
99970146840 - Throttle housing seal
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410090100
94410090100
02-26015-03
022601503
517.900
The product you are viewing cross references to these numbers
Price: £105.00
In stock
Vehicle Group
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
Information
Engine bottom end gasket set.
Fits:
Porsche 924S
Porsche 944 / 944S / 944T
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410090103
The product you are viewing cross references to these numbers
Fits:
Porsche 924S
Porsche 944 / 944S / 944T
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410090103
94410090108
94410090103
517.917
The product you are viewing cross references to these numbers
Price: £189.00
In stock
Vehicle Group
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Information
Cylinder head flange gasket.
Fits:
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810619704
The product you are viewing cross references to these numbers
Fits:
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810619704
92810619704
92810619702
The product you are viewing cross references to these numbers
Price: £3.65
In stock