Mahle Engine Cylinder
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SR007
Product Information
These specially designed and fabricated nuts secure the 911 cylinders in place during rebuild. The nuts allow for easy crank rotation and installation of pistons/cylinders without having the cylinders slip out of the case. Precisely fabricated from 2011 aluminum and anodized for years of service. Each nut is complete with a special Delrin insert to protect your cylinders.
Comes in a set of SIX.
Product Information
Cylinder hold down nuts, Set of 6 for Porsche 911These specially designed and fabricated nuts secure the 911 cylinders in place during rebuild. The nuts allow for easy crank rotation and installation of pistons/cylinders without having the cylinders slip out of the case. Precisely fabricated from 2011 aluminum and anodized for years of service. Each nut is complete with a special Delrin insert to protect your cylinders.
Comes in a set of SIX.
Vehicle Group
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- 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)
€70.53 inc. VAT
Now €63.48 inc. VAT
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503WR18::1
Product Information
Fits:
Porsche 911E / 911S 2.0L
Engine code: 901.02
80.00 Ø
6 Cylinder
12 valve
1,991
118 KW
160 HP
07/66 - 11/68
Engine code: 901.08
80.00 Ø
6 Cylinder
12 valve
1,991
118 KW
160 HP
Engine code:901.11
80.00 Ø
6 Cylinder
12 valve
1,991
140 HP
Engine code: 901.09
80.00 Ø
6 Cylinder
12 valve
1,991
103 KW
140 HP
Cyl. Bore: 80,000 mm
Outer diameter: 92,000 mm
Length: 123,000 mm
Height: 82,300 mm
Flange Ø: 88,0 mm
Flange Ø: 88,000 mm
Please note: These pistons will need to be purchased as 6 pcs. Singles are not available. Price displayed is for each piston.
This set should only be fitted by engine builders or tuners as other parts may be required.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
503WR18
The product you are viewing cross references to these numbers
Product Information
Engine cylinder / liner.Fits:
Porsche 911E / 911S 2.0L
Engine code: 901.02
80.00 Ø
6 Cylinder
12 valve
1,991
118 KW
160 HP
07/66 - 11/68
Engine code: 901.08
80.00 Ø
6 Cylinder
12 valve
1,991
118 KW
160 HP
Engine code:901.11
80.00 Ø
6 Cylinder
12 valve
1,991
140 HP
Engine code: 901.09
80.00 Ø
6 Cylinder
12 valve
1,991
103 KW
140 HP
Cyl. Bore: 80,000 mm
Outer diameter: 92,000 mm
Length: 123,000 mm
Height: 82,300 mm
Flange Ø: 88,0 mm
Flange Ø: 88,000 mm
Please note: These pistons will need to be purchased as 6 pcs. Singles are not available. Price displayed is for each piston.
This set should only be fitted by engine builders or tuners as other parts may be required.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
503WR18
90110390600
5030890
5030800
503WR18
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
€265.64 inc. VAT
Now €239.08 inc. VAT
In Stock - 24 Hour Dispatch
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12 Month Warranty
Worldwide Delivery
503WR18::2
Product Information
Fits:
Porsche 911 L 2.0L 01/63 - 12/68 COUPE or Targa
901.17
901.05
901.06
901.07
901.14
KW96
HP131
Cyl. Bore: 80,000 mm
Outer diameter: 92,000 mm
Length: 123,000 mm
Height: 82,300 mm
Flange Ø: 88,0 mm
Flange Ø: 88,000 mm
Please note: These pistons will need to be purchased as 6 pcs. Singles are not available. Price displayed is for each piston.
This set should only be fitted by engine builders or tuners as other parts may be required.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
503WR18
The product you are viewing cross references to these numbers
Product Information
Engine cylinder / liner. Fits:
Porsche 911 L 2.0L 01/63 - 12/68 COUPE or Targa
901.17
901.05
901.06
901.07
901.14
KW96
HP131
Cyl. Bore: 80,000 mm
Outer diameter: 92,000 mm
Length: 123,000 mm
Height: 82,300 mm
Flange Ø: 88,0 mm
Flange Ø: 88,000 mm
Please note: These pistons will need to be purchased as 6 pcs. Singles are not available. Price displayed is for each piston.
This set should only be fitted by engine builders or tuners as other parts may be required.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
503WR18
90110390200
90110390201
5030690
5030700
503WR18
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
€265.64 inc. VAT
Now €239.08 inc. VAT
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
503WR18::3
Product Information
Fits:
PORSCHE 911L 2.0L 01/63 - 12/68
901.01
KW96
HP13
Cyl. Bore: 80,000 mm
Outer diameter: 92,000 mm
Length: 123,000 mm
Height: 82,300 mm
Flange Ø: 88,0 mm
Flange Ø: 88,000 mm
Please note: These pistons will need to be purchased as 6 pcs. Singles are not available. Price displayed is for each piston.
This set should only be fitted by engine builders or tuners as other parts may be required.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
503WR18
The product you are viewing cross references to these numbers
Product Information
Engine cylinder / liner. Fits:
PORSCHE 911L 2.0L 01/63 - 12/68
901.01
KW96
HP13
Cyl. Bore: 80,000 mm
Outer diameter: 92,000 mm
Length: 123,000 mm
Height: 82,300 mm
Flange Ø: 88,0 mm
Flange Ø: 88,000 mm
Please note: These pistons will need to be purchased as 6 pcs. Singles are not available. Price displayed is for each piston.
This set should only be fitted by engine builders or tuners as other parts may be required.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
503WR18
90110390200
90110390201
5030690
5030600
503WR18
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
€265.64 inc. VAT
Now €239.08 inc. VAT
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
503WR18
Product Information
Fits:
Engine code: 901.10
Porsche 911S 125Kw / 170PS 07/1966-02/1972
Cyl. Bore: 80,000 mm
Outer diameter: 92,000 mm
Length: 123,000 mm
Height: 82,300 mm
Flange Ø: 88,0 mm
Flange Ø: 88,000 mm
Please note: These pistons will need to be purchased as 6 pcs. Singles are not available. Price displayed is for each piston.
This set should only be fitted by engine builders or tuners as other parts may be required.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
503WR18
The product you are viewing cross references to these numbers
Product Information
Engine cylinder / liner.Fits:
Engine code: 901.10
Porsche 911S 125Kw / 170PS 07/1966-02/1972
Cyl. Bore: 80,000 mm
Outer diameter: 92,000 mm
Length: 123,000 mm
Height: 82,300 mm
Flange Ø: 88,0 mm
Flange Ø: 88,000 mm
Please note: These pistons will need to be purchased as 6 pcs. Singles are not available. Price displayed is for each piston.
This set should only be fitted by engine builders or tuners as other parts may be required.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
503WR18
90110391101
5032890
5032800
503WR18
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
€265.64 inc. VAT
Now €239.08 inc. VAT
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
503WR23
Product Information
Fits:
Engine codes: 616.16 / 616.36 / 616.39 / 616.40
Porsche 912 1.6 01/1965-02/1970
Porsche 356B 1600 super90 01/1959 - 12/1963
Porsche 356C 1600 SC 01/1965- 02/1970
Please note: These pistons will need to be purchased as 4 pcs. Singles are not available. Price displayed is for each piston.
This set should only be fitted by engine builders or tuners as other parts may be required.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
503WR23
The product you are viewing cross references to these numbers
Product Information
Engine cylinder / liner. Fits:
Engine codes: 616.16 / 616.36 / 616.39 / 616.40
Porsche 912 1.6 01/1965-02/1970
Porsche 356B 1600 super90 01/1959 - 12/1963
Porsche 356C 1600 SC 01/1965- 02/1970
Please note: These pistons will need to be purchased as 4 pcs. Singles are not available. Price displayed is for each piston.
This set should only be fitted by engine builders or tuners as other parts may be required.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
503WR23
61610390403
5040190
61610390490
5040100
503WR23
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
€335.24 inc. VAT
Now €301.72 inc. VAT
In Stock - 3- 5 Days Dispatch
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12 Month Warranty
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DISPLAYING 1 to 6 (of 6 products)
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About Mahle Engine Cylinder
High-Precision Mahle Engine Cylinders for Reliable, Long-Lasting Porsche Engine Rebuilds
Mahle engine cylinders—often referred to as cylinder barrels—are renowned for their exceptional engineering quality, precise tolerances and long-term durability. These components form the outer wall of the combustion chamber and must withstand intense pressure, heat and vibration. Mahle’s advanced casting and plating technologies make their cylinders one of the most trusted choices for Porsche engine rebuilds, from classic air-cooled engines to higher-output modern variants.
Whether restoring an original engine or upgrading performance characteristics, Mahle cylinders provide optimal heat dissipation, improved sealing surfaces and reliable structural strength essential for consistent combustion and long-term engine health.
What Mahle Engine Cylinders Do
Mahle cylinders play several critical roles within an
internal combustion engine:
- Provide
a durable, perfectly round bore for piston movement
- Maintain
correct compression by offering a smooth, stable sealing surface
- Withstand
high combustion pressures in performance and turbo applications
- Assist
with thermal management, dissipating heat from the combustion chamber
- Support
piston rings to maintain proper sealing and minimise blow-by
- Ensure longevity by resisting wear, distortion and scoring
Mahle’s reputation for dimensional accuracy ensures consistent performance even in demanding driving conditions.
Why Engine Cylinders Commonly Fail
Even high-quality cylinders experience wear over time due to
harsh operating environments. Common causes of cylinder failure include:
- Cylinder
scoring from oil contamination or lubrication failure
- Overheating,
causing expansion or distortion of the cylinder wall
- Incorrect
air-fuel mixture leading to detonation and surface damage
- High
mileage wear, enlarging the bore or reducing roundness
- Corrosion,
especially in engines stored for long periods
- Piston
ring wear causing uneven cylinder wall polishing
- Thermal cycling fatigue, weakening structural integrity
Symptoms may include low compression, excessive oil consumption, reduced power, smoking exhaust or poor overall engine efficiency.
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