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Engine Cylinders / Liners / Pistons
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96410411520/2KIT
Product Information
This cylinder head gasket set (6-piece) is an OE Match replacement kit designed for air-cooled Porsche 964 and 993 flat-six engines. This set includes the full quantity of head sealing rings required for a complete engine top-end service or rebuild.
SET OF 6
Fits:
Porsche 964 C2 / C4 / Carrera RS 1991-94
M 62M 06837 >>
M 62M 52758 >>
Porsche 964 Turbo 3.6L 1993 - 1994
Porsche 993 1995 - 1998
Diagram ref no 8
Cylinder head gaskets (sealing rings) play a critical role in containing combustion pressure and heat. They ensure a gas-tight seal between the cylinder and head, supporting stable compression, efficient combustion, and consistent engine performance across all six cylinders.
Replacing all six gaskets at once ensures uniform sealing and balanced compression throughout the engine.
Function:
• Seals the cylinder-to-head interface under extreme heat and pressure
• Maintains compression integrity for efficient combustion
• Prevents blow-by and gas leakage at the head joint
• Protects cylinder heads and barrels during long-term operation
Correct sealing is essential on air-cooled engines, where thermal expansion and operating temperatures place high stress on the head-to-cylinder joint.
Cylinder head gaskets are exposed to extreme thermal and mechanical stress. Over time, sealing rings can lose effectiveness, leading to:
• Compression loss
• Combustion gas leakage
• Reduced engine efficiency
• Risk of head or cylinder damage.
Replacing all six gaskets during a rebuild or top-end refresh ensures consistent sealing, protects machined surfaces, and supports long-term engine reliability.
When to replace. Replace cylinder head gaskets when:
• Performing a top-end rebuild or engine overhaul
• Cylinder heads are removed
• Leak-down or compression tests show sealing issues
• Evidence of combustion leakage is found
• As preventative maintenance during engine restoration
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410411520
The product you are viewing cross references to these numbers
Product Information
Cylinder head gasket set. This cylinder head gasket set (6-piece) is an OE Match replacement kit designed for air-cooled Porsche 964 and 993 flat-six engines. This set includes the full quantity of head sealing rings required for a complete engine top-end service or rebuild.
SET OF 6
Fits:
Porsche 964 C2 / C4 / Carrera RS 1991-94
M 62M 06837 >>
M 62M 52758 >>
Porsche 964 Turbo 3.6L 1993 - 1994
Porsche 993 1995 - 1998
Diagram ref no 8
Cylinder head gaskets (sealing rings) play a critical role in containing combustion pressure and heat. They ensure a gas-tight seal between the cylinder and head, supporting stable compression, efficient combustion, and consistent engine performance across all six cylinders.
Replacing all six gaskets at once ensures uniform sealing and balanced compression throughout the engine.
Function:
• Seals the cylinder-to-head interface under extreme heat and pressure
• Maintains compression integrity for efficient combustion
• Prevents blow-by and gas leakage at the head joint
• Protects cylinder heads and barrels during long-term operation
Correct sealing is essential on air-cooled engines, where thermal expansion and operating temperatures place high stress on the head-to-cylinder joint.
Cylinder head gaskets are exposed to extreme thermal and mechanical stress. Over time, sealing rings can lose effectiveness, leading to:
• Compression loss
• Combustion gas leakage
• Reduced engine efficiency
• Risk of head or cylinder damage.
Replacing all six gaskets during a rebuild or top-end refresh ensures consistent sealing, protects machined surfaces, and supports long-term engine reliability.
When to replace. Replace cylinder head gaskets when:
• Performing a top-end rebuild or engine overhaul
• Cylinder heads are removed
• Leak-down or compression tests show sealing issues
• Evidence of combustion leakage is found
• As preventative maintenance during engine restoration
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410411520
96410411520
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
6 x Cylinder head gasket. Porsche 964 / 993 (96410411520/2)
In Stock - 3- 5 Days Dispatch
Vehicle Group
Vehicle Group
- 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 3.6L 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
Price: £54.00
In Stock - 3- 5 Days Dispatch
FLD-01
Product Information
Sold each
Cp-Carrillo's fastener assembly lube is molybdenum based lubrication grease with enhanced properties.
This product offers an improved clamp load repeatability, greater resistance to high pressure and temperature (range -22f to 1200f), and no oil contamination. The coefficient of friction stays unchanged, even after several connecting rod bolt re-tightening and loosening processes.
We highly recommend lubricating the connecting rod bolt head and thread with this lubricant.
Be sure to add it to your order if you are replacing your rod bolts.
Product Information
Carrillo Fastener / Bolt assembly lube 1oz.Sold each
Cp-Carrillo's fastener assembly lube is molybdenum based lubrication grease with enhanced properties.
This product offers an improved clamp load repeatability, greater resistance to high pressure and temperature (range -22f to 1200f), and no oil contamination. The coefficient of friction stays unchanged, even after several connecting rod bolt re-tightening and loosening processes.
We highly recommend lubricating the connecting rod bolt head and thread with this lubricant.
Be sure to add it to your order if you are replacing your rod bolts.
Price: £16.73
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
96410411520/1
Product Information
Fits:
Porsche 964 C2 / C4 / Carrera RS 1991-94
M 62M 06837 >>
M 62M 52758 >>
Porsche 964 Turbo 3.6L 1993-94
Porsche 993 1995-98
Click 'Zoom in' for large parts diagram.
Diagram ref no 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410411520
The product you are viewing cross references to these numbers
Product Information
Cylinder head gasket. Fits:
Porsche 964 C2 / C4 / Carrera RS 1991-94
M 62M 06837 >>
M 62M 52758 >>
Porsche 964 Turbo 3.6L 1993-94
Porsche 993 1995-98
Click 'Zoom in' for large parts diagram.
Diagram ref no 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410411520
96410411520
470.600
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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 3.6L 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
Price: £13.00
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
96410411520/2
Product Information
OE Match cylinder head gasket (sealing ring) designed to seal the joint between the cylinder and cylinder head on air-cooled Porsche 964 and 993 engines, helping maintain proper compression and preventing leakage at the head-to-cylinder interface.
Sold each, 6 required per vehicle.
Fits:
Porsche 964 C2 / C4 / Carrera RS 1991-94
M 62M 06837 >>
M 62M 52758 >>
Porsche 964 Turbo 3.6L 1993 - 1994
Porsche 993 1995 - 1998
Diagram ref no 8
The gasket forms a critical seal at the combustion boundary where extreme heat and pressure are present. It helps keep combustion gases contained, supports stable compression, and prevents leakage that can lead to poor running, overheating, or costly engine damage.
Function:
• Seals the cylinder-to-head interface under high temperature and pressure
• Helps maintain compression and consistent combustion efficiency
• Reduces risk of blow-by and hot gas leakage at the sealing surface
• Supports long-term reliability during rebuilds or top-end refreshes
A compromised head gasket/sealing ring can cause compression loss and leakage at the head-to-cylinder joint, often showing up as poor performance, combustion leakage symptoms, and increased thermal stress. Replacing these gaskets during top-end work ensures correct sealing and protects freshly machined sealing surfaces.
When to replace:
• During top-end rebuild, head removal, or cylinder service
• Compression/leak-down results indicate sealing issues
• Evidence of leakage at head-to-cylinder interface
• Engine is apart and gaskets show wear, heat marking, or deformation
• Preventative replacement when refreshing 964/993 top end
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410411520
The product you are viewing cross references to these numbers
Product Information
Cylinder head gasket. OE Match cylinder head gasket (sealing ring) designed to seal the joint between the cylinder and cylinder head on air-cooled Porsche 964 and 993 engines, helping maintain proper compression and preventing leakage at the head-to-cylinder interface.
Sold each, 6 required per vehicle.
Fits:
Porsche 964 C2 / C4 / Carrera RS 1991-94
M 62M 06837 >>
M 62M 52758 >>
Porsche 964 Turbo 3.6L 1993 - 1994
Porsche 993 1995 - 1998
Diagram ref no 8
The gasket forms a critical seal at the combustion boundary where extreme heat and pressure are present. It helps keep combustion gases contained, supports stable compression, and prevents leakage that can lead to poor running, overheating, or costly engine damage.
Function:
• Seals the cylinder-to-head interface under high temperature and pressure
• Helps maintain compression and consistent combustion efficiency
• Reduces risk of blow-by and hot gas leakage at the sealing surface
• Supports long-term reliability during rebuilds or top-end refreshes
A compromised head gasket/sealing ring can cause compression loss and leakage at the head-to-cylinder joint, often showing up as poor performance, combustion leakage symptoms, and increased thermal stress. Replacing these gaskets during top-end work ensures correct sealing and protects freshly machined sealing surfaces.
When to replace:
• During top-end rebuild, head removal, or cylinder service
• Compression/leak-down results indicate sealing issues
• Evidence of leakage at head-to-cylinder interface
• Engine is apart and gaskets show wear, heat marking, or deformation
• Preventative replacement when refreshing 964/993 top end
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410411520
96410411520
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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 3.6L 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
Price: £9.00
In Stock - 3- 5 Days Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
99917801600
Product Information
Fits:
Porsche 993 - 1994 to 1998
Porsche 996 turbo - 2001 to 2005
Porsche 997 turbo / GT2 - 2007 to 2013
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917801600
The product you are viewing cross references to these numbers
Product Information
Gudgeon / piston pin circlip 23 x 1.6. Fits:
Porsche 993 - 1994 to 1998
Porsche 996 turbo - 2001 to 2005
Porsche 997 turbo / GT2 - 2007 to 2013
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99917801600
99917801600
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
Price: £4.13
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
PC102-002
Product Information
Ø102mm bore, Ø107mm, OD slip in
Fits:
PORSCHE 964 / 993
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PC102-002
The product you are viewing cross references to these numbers
Product Information
MAHLE Motorsport Nikasil cylinder singleØ102mm bore, Ø107mm, OD slip in
Fits:
PORSCHE 964 / 993
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PC102-002
PC102-002
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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
Price: £432.00
Orderable - 23 to 10 Days
Shop Securely
12 Month Warranty
Worldwide Delivery
PC102-001
Product Information
Ø102mm bore, Ø109mm, OD machine fit
Fits:
PORSCHE 964 / 993
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PC102-001
The product you are viewing cross references to these numbers
Product Information
MAHLE Motorsport Nikasil cylinder singleØ102mm bore, Ø109mm, OD machine fit
Fits:
PORSCHE 964 / 993
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PC102-001
PC102-001
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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
Price: £693.24
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
99970715240/1
Product Information
Fitted into the cylinder base sealing groove, the O-ring compresses between the cylinder and crankcase to form an oil-tight barrier that withstands temperature changes and engine vibration.
Sold each, 6 required per car.
Fits:
Porsche 964 Carrera 2 / Carrera 4 / RS / turbo 1989 - 1994
Porsche 993 Carrera 2 / Carrera 4 / Carrera S / Carrera 4S / turbo 1994 - 1997
Diagram ref no 2
This OE Match O-ring is manufactured to OE-equivalent dimensions and material properties to provide a reliable seal at the cylinder-to-case interface. Correct sealing here is essential to prevent oil seepage during heat cycles and maintain a clean, properly sealed engine during rebuild or maintenance work. Ideal for engine overhauls, reseals, or any time cylinders are removed, this direct-fit O-ring restores the original sealing function without modification.
Old O-rings can harden, flatten, or crack with age and heat, increasing the likelihood of oil seepage at the cylinder base. Replacing them during engine work helps ensure a proper reseal, reducing leaks and protecting surrounding components from oil contamination.
When to replace:
• During engine rebuilds or top-end work (cylinders removed)
• Any time cylinder bases are resealed
• Visible oil seepage at cylinder-to-case area
• High-mileage preventative reseal
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970715240
The product you are viewing cross references to these numbers
Product Information
O-ring cylinder base 102 x 2. Fitted into the cylinder base sealing groove, the O-ring compresses between the cylinder and crankcase to form an oil-tight barrier that withstands temperature changes and engine vibration.
Sold each, 6 required per car.
Fits:
Porsche 964 Carrera 2 / Carrera 4 / RS / turbo 1989 - 1994
Porsche 993 Carrera 2 / Carrera 4 / Carrera S / Carrera 4S / turbo 1994 - 1997
Diagram ref no 2
This OE Match O-ring is manufactured to OE-equivalent dimensions and material properties to provide a reliable seal at the cylinder-to-case interface. Correct sealing here is essential to prevent oil seepage during heat cycles and maintain a clean, properly sealed engine during rebuild or maintenance work. Ideal for engine overhauls, reseals, or any time cylinders are removed, this direct-fit O-ring restores the original sealing function without modification.
Old O-rings can harden, flatten, or crack with age and heat, increasing the likelihood of oil seepage at the cylinder base. Replacing them during engine work helps ensure a proper reseal, reducing leaks and protecting surrounding components from oil contamination.
When to replace:
• During engine rebuilds or top-end work (cylinders removed)
• Any time cylinder bases are resealed
• Visible oil seepage at cylinder-to-case area
• High-mileage preventative reseal
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970715240
99970715240
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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) 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
Price: £3.75
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
XP5020
Product Information
Bore: 100 mm
Size / STD: std
Stroke: 76.4 mm
Rod C-C: 127 mm
Comp Height: 1.290 in
Comp Ratio: 11.5
Dome Height: 0.205
Head CC: 90
VR Depths: .180/.135
Rings Thk: 1.0 X 1.2 X 2.8
Pin Diameter: 23 mm
Pin Length: 2.250
Pin Wall: 0.160
X series pistons are designed to fit the air cooled Porsche 911 engines including 3.0 Liter SC, 3.2 Liter Carrera, 3.6 Liter and 3.8 Liter RSR.
Manufactured from 2618 alloy, the pistons utilize a narrow pin boss forging and come with heavy duty pins for extra strength. Pistons include full 3-D under crown milling, normally only found on custom pistons, insuring the lightest possible piston. Each piston features anti-detonation grooves, accumulator grooves, double pin oil with broach, our wire lox system with installation tool and a set of CPN rings, consisting of gas nitride top ring with napier cut second.
X style forgings covers 4 bore sizes ranging from 95 MM, 98 mm, 100 MM and 102 MM. This complete package is the most modern available for the vintage 911 engine.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
XP5020
The product you are viewing cross references to these numbers
Product Information
Piston SET OF 6 for Porsche 964 3.6L and Porsche 993 3.6L Bore: 100 mm
Size / STD: std
Stroke: 76.4 mm
Rod C-C: 127 mm
Comp Height: 1.290 in
Comp Ratio: 11.5
Dome Height: 0.205
Head CC: 90
VR Depths: .180/.135
Rings Thk: 1.0 X 1.2 X 2.8
Pin Diameter: 23 mm
Pin Length: 2.250
Pin Wall: 0.160
X series pistons are designed to fit the air cooled Porsche 911 engines including 3.0 Liter SC, 3.2 Liter Carrera, 3.6 Liter and 3.8 Liter RSR.
Manufactured from 2618 alloy, the pistons utilize a narrow pin boss forging and come with heavy duty pins for extra strength. Pistons include full 3-D under crown milling, normally only found on custom pistons, insuring the lightest possible piston. Each piston features anti-detonation grooves, accumulator grooves, double pin oil with broach, our wire lox system with installation tool and a set of CPN rings, consisting of gas nitride top ring with napier cut second.
X style forgings covers 4 bore sizes ranging from 95 MM, 98 mm, 100 MM and 102 MM. This complete package is the most modern available for the vintage 911 engine.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
XP5020
9004
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 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) 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
Price: £1,570.37
Orderable - 11 to 28 Days
Shop Securely
12 Month Warranty
Worldwide Delivery
XP5021
Product Information
Bore: 100 mm
Size / STD: std
Stroke: 76.4 mm
Rod C-C: 127 mm
Comp Height: 1.290 in
Comp Ratio: 12.5
Dome Height: 0.445
Head CC: 90
VR Depths: .180/.135
Rings Thk: 1.0 X 1.2 X 2.8
Pin Diameter: 23 mm
Pin Length: 2.250
Pin Wall: 0.160
X series pistons are designed to fit the air cooled Porsche 911 engines including 3.0 Liter SC, 3.2 Liter Carrera, 3.6 Liter and 3.8 Liter RSR.
Manufactured from 2618 alloy, the pistons utilize a narrow pin boss forging and come with heavy duty pins for extra strength. Pistons include full 3-D under crown milling, normally only found on custom pistons, insuring the lightest possible piston. Each piston features anti-detonation grooves, accumulator grooves, double pin oil with broach, our wire lox system with installation tool and a set of CPN rings, consisting of gas nitride top ring with napier cut second.
X style forgings covers 4 bore sizes ranging from 95 MM, 98 mm, 100 MM and 102 MM. This complete package is the most modern available for the vintage 911 engine.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
XP5021
The product you are viewing cross references to these numbers
Product Information
Piston SET OF 6 for Porsche 964 3.6L and Porsche 993 3.6L Bore: 100 mm
Size / STD: std
Stroke: 76.4 mm
Rod C-C: 127 mm
Comp Height: 1.290 in
Comp Ratio: 12.5
Dome Height: 0.445
Head CC: 90
VR Depths: .180/.135
Rings Thk: 1.0 X 1.2 X 2.8
Pin Diameter: 23 mm
Pin Length: 2.250
Pin Wall: 0.160
X series pistons are designed to fit the air cooled Porsche 911 engines including 3.0 Liter SC, 3.2 Liter Carrera, 3.6 Liter and 3.8 Liter RSR.
Manufactured from 2618 alloy, the pistons utilize a narrow pin boss forging and come with heavy duty pins for extra strength. Pistons include full 3-D under crown milling, normally only found on custom pistons, insuring the lightest possible piston. Each piston features anti-detonation grooves, accumulator grooves, double pin oil with broach, our wire lox system with installation tool and a set of CPN rings, consisting of gas nitride top ring with napier cut second.
X style forgings covers 4 bore sizes ranging from 95 MM, 98 mm, 100 MM and 102 MM. This complete package is the most modern available for the vintage 911 engine.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
XP5021
9005
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 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) 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
Price: £1,570.37
Orderable - 11 to 28 Days
Shop Securely
12 Month Warranty
Worldwide Delivery
DISPLAYING 1 to 10 (of 10 products)
Also found on these pages
About Engine Cylinders / Liners / Pistons
Engine Cylinders / Liners / Pistons
Design911 supplies a complete range of engine cylinders, liners, and pistons engineered for precision, durability, and performance across all Porsche models. These components form the core of the combustion chamber and play a critical role in power delivery, fuel efficiency, and long-term engine reliability. Whether restoring a classic air-cooled engine or rebuilding a modern water-cooled unit, Design911 provides OEM-quality and performance-enhanced solutions to ensure your engine operates at its peak.
What These Components Are
Cylinders / Liners
- Engine
cylinders or cylinder liners form the sealed chamber where
combustion occurs.
- Air-cooled
and early Porsche engines often utilise Nikasil-coated aluminium
cylinders, while modern engines may use wet liners or plasma-coated
bores.
- They maintain precise clearances and heat distribution to ensure smooth piston movement and optimal compression.
Pistons
- Pistons convert combustion energy into mechanical force that drives the crankshaft.
- High-quality
piston sets include matched rings, gudgeon pins, and circlips,
designed to maintain sealing and withstand high temperatures and loads.
- Available in OEM replacements, oversized repair pistons, and performance forged variants for tuning or race applications.
What They Do in the Engine
- Create the compression needed for efficient combustion
- Seal the combustion chamber with piston rings
- Maintain controlled friction and lubrication
- Support optimal engine temperature and pressure
- Transfer combustion energy to the crankshaft
Collectively, these components determine the engine’s horsepower, torque, emissions, and long-term durability.
Why Engine Cylinders, Liners & Pistons Fail
Porsche engines—especially high-mileage, high-performance, or poorly maintained units—can suffer from a range of issues:
Common Failure Causes
- Scoring
/ Bore Damage: Lack of lubrication, contaminated oil, or debris
- Piston
Ring Wear: Loss of compression, increased oil consumption
- Overheating:
Warped cylinders or broken piston lands
- Nikasil
/ Alusil Breakdown: Chemical or mechanical wear of the cylinder
coating
- Detonation
/ Pre-Ignition: Piston crown damage from improper fueling or timing
- Age & Mileage: Natural wear of piston skirts, rings, and cylinder surfaces
Why They Should Be Replaced
Replacing worn or damaged cylinders, liners, and pistons
restores:
- Compression & engine efficiency
- Fuel economy & power output
- Reduced oil consumption & exhaust smoke
- Smoother engine operation & reduced noise
- Long-term reliability & protection from catastrophic failure
Performance-minded owners also upgrade to forged pistons and precision-machined liners for improved strength, heat management, and durability—especially in turbo or track-focused builds.
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