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Mahle Piston & Cylinder
Fits:
Porsche 997.2 Carrera 4 / 4S / 4GTS 3.8L 2009 - 2012
* engine code: A101
Porsche 991.1 Carrera 4 / 4S / 4GTS 3.8L 2012 - 2016
* engine code: A103
* cars without Compression variant (PR:-145)
Porsche 981 Boxster Spyder 3.8L 2016
Porsche 981C Cayman GT4 3.8L 2016
Diagram ref no 1
Engine code: MA1.01 / MA1.03
Cyl. Bore: 102 mm
Length: 56.4 mm
Compression: Height 32.95 mm
Bolt Length: 56 mm
Bolt: Ø 22 mm
This piston is a core internal engine component that reciprocates in the cylinder bore, converting combustion pressure into mechanical motion via the connecting rod and crankshaft. It also works with piston rings to seal the combustion chamber, manage oil control, and withstand high heat/pressure - helping maintain factory-level performance, durability, and engine dynamics.
Functions & Technical Role:
• Combustion pressure handling: Converts the force of combustion into linear piston movement
• Sealing the chamber: Works with piston rings to maintain compression and prevent blow-by
• Oil control: Cooperates with rings and skirt design to manage oil lubrication
Fitment / Position on Car
• Installed on: Inside the engine block’s cylinder bores
• Location: One per cylinder; typically 6 pistons required for a complete 3.8 L flat-six engine
• Orientation: Works with piston rings, wrist pin, and connecting rod to form the bottom of the combustion chamber
Manufactured using advanced alloy technology and strict quality control standards, MAHLE pistons are engineered to withstand extreme thermal loads and high engine speeds typical of Porsche applications. The piston works in conjunction with piston rings and the connecting rod assembly to convert combustion energy into smooth, reliable crankshaft rotation.
Ideal for engine rebuilds, overhauls, or performance restorations where maintaining factory specifications is essential.
Please note: Pistons are sold individually. Six required per engine.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A110393800
The product you are viewing cross references to these numbers
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche Cayman GT4 3.8L 2015-16
Price is for EACH (must be purchased as a set of 6).
Fits:
Porsche 997.2 Carrera 4 / 4S / 4GTS 3.8L 2009 - 2012
* engine code: A101
Porsche 991.1 Carrera 4 / 4S / 4GTS 3.8L 2012 - 2016
* engine code: A103
* cars without Compression variant (PR:-145)
Porsche 981 Boxster Spyder 3.8L 2016
Porsche 981C Cayman GT4 3.8L 2016
Diagram ref no 1
Engine code: MA1.01 / MA1.03
Cyl. Bore: 102 mm
Length: 56.4 mm
Compression: Height 32.95 mm
Bolt Length: 56 mm
Bolt: Ø 22 mm
This piston is a core internal engine component that reciprocates in the cylinder bore, converting combustion pressure into mechanical motion via the connecting rod and crankshaft. It also works with piston rings to seal the combustion chamber, manage oil control, and withstand high heat/pressure - helping maintain factory-level performance, durability, and engine dynamics.
Functions & Technical Role:
• Combustion pressure handling: Converts the force of combustion into linear piston movement
• Sealing the chamber: Works with piston rings to maintain compression and prevent blow-by
• Oil control: Cooperates with rings and skirt design to manage oil lubrication
Fitment / Position on Car
• Installed on: Inside the engine block’s cylinder bores
• Location: One per cylinder; typically 6 pistons required for a complete 3.8 L flat-six engine
• Orientation: Works with piston rings, wrist pin, and connecting rod to form the bottom of the combustion chamber
Manufactured using advanced alloy technology and strict quality control standards, MAHLE pistons are engineered to withstand extreme thermal loads and high engine speeds typical of Porsche applications. The piston works in conjunction with piston rings and the connecting rod assembly to convert combustion energy into smooth, reliable crankshaft rotation.
Ideal for engine rebuilds, overhauls, or performance restorations where maintaining factory specifications is essential.
Please note: Pistons are sold individually. Six required per engine.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A110393800
The product you are viewing cross references to these numbers
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche Cayman GT4 3.8L 2015-16
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Mahle Pistons & Cylinders for High-Performance Porsche Engine Rebuilds
Mahle piston and cylinder sets are among the most respected internal engine components in the Porsche world. Built to exacting tolerances and engineered for strength, durability and efficient combustion, Mahle units deliver the reliability and performance required for both classic air-cooled engines and later water-cooled models. Whether restoring an original engine or undertaking a high-performance rebuild, Mahle piston and cylinder kits provide the foundation for smooth power delivery, optimal compression and long-term engine health.
These precision-engineered components ensure consistent fitment, stable thermal expansion and excellent sealing—key factors in the performance and longevity of any rebuilt flat-six engine.
What Mahle Pistons & Cylinders Do
Together, Mahle pistons and cylinders perform several
essential functions:
- Create the combustion chamber where fuel and air ignite
- Maintain consistent compression ratios for accurate engine performance
- Provide a durable sliding surface for piston movement
- Ensure efficient combustion through precise piston crown and ring design
- Regulate heat transfer to protect engine internals
- Support high-performance and high-RPM conditions without distortion
By delivering exceptional sealing and reduced friction, they contribute to smoother running, improved power and increased engine lifespan.
Why Pistons & Cylinders Commonly Fail
Even though Mahle components are designed for long-term
durability, they can wear or fail due to age, misuse or environmental factors.
Typical causes include:
- Cylinder scoring due to oil starvation or debris contamination
- Piston ring wear leading to blow-by and loss of compression
- Overheating causing piston expansion or scoring
- Detonation or pre-ignition damaging piston crowns or ring lands
- Poor lubrication quality accelerating friction-related wear
- High mileage fatigue causing piston skirt wear or cylinder distortion
- Incorrect tuning or fuel mixture issues stressing components
Symptoms often include excessive oil consumption, smoke on startup, loss of power, knocking noises or uneven compression readings.
Why You Should Replace Mahle Pistons & Cylinders During an Engine Rebuild
Replacing worn or ageing piston and cylinder sets with high-quality, precision-engineered Mahle components designed to match original performance levels ensures a reliable, efficient and powerful engine rebuild.
Benefits include:
- Restored compression and improved combustion efficiency
- Reduced oil consumption and better ring sealing
- Stronger resistance to detonation and high-temperature operation
- Improved power output and throttle response
- Enhanced long-term engine reliability and smoother running
- Correct fitment and performance for classic and modern Porsche engines
Upgrading to a fresh Mahle set is one of the most impactful improvements you can make during a rebuild.
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