Original Porsche Part Genuine Porsche part 9A110391470

Connection con rods
SET OF 6

Fits:
Porsche 997 3.6L / 3.8L
Porsche 987 3.4L

CP-Carrillo connecting rods are fully machined from a proprietary 4330m alloy forging for strength and durability. Rods are available with 2 types of bolts: The standard WMC-H6 bolt with a UTS of 220ksi and our upgraded CARR-S6 bolt with a UTS of 285ksi. The CARR upgraded bolt is a good choice if planning on revving the engine higher than 8500rpm.

All our bolts are manufactured with asymmetrical threads, each thread has a slightly different design than the previous giving the bolts an evenly distributed thread engagement. This helps increasing the clamp load and fatigue life of the fasteners

Diagram Ref No 14.

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9A110391402

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Connection con rods
SET OF 6

Fits:
Porsche 997 3.8L Turbo

CP-Carrillo connecting rods are fully machined from a proprietary 4330m alloy forging for strength and durability. Rods are available with 2 types of bolts: The standard WMC-H6 bolt with a UTS of 220ksi and our upgraded CARR-S6 bolt with a UTS of 285ksi. The CARR upgraded bolt is a good choice if planning on revving the engine higher than 8500rpm.

All our bolts are manufactured with asymmetrical threads, each thread has a slightly different design than the previous giving the bolts an evenly distributed thread engagement. This helps increasing the clamp load and fatigue life of the fasteners

Diagram Ref No 14.

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9A110391703

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Forged piston kit (Set of 6)
Porsche 991.2 turbo

Standard Bore - 102.00mm



ItalianRP is a market-leading manufacturer for connecting rods and pistons located in Calabria, Italy.
Using the latest available material technology derived with Formula 1, such as double bridge construction used in every piston, from the Silver Line to the Platinum Line, high end product.
ItalianRP pistons are the culmination of years of experience in the field and made from only high-grade aluminum, which can satisfy both aeronautics and military standards.

Fits
Engine - M96.03 3.6Ltr
Porsche 991.2 turbo - 2017 to 2020

Bore - 102.00mm
Stroke - OEM
Compression Ratio - OEM
Comp. Height - OEM

Silver Line
Piston Material - Forged 4032 Aluminium
Type - Double Bridge Construction

Gold Line
Piston Material - Forged 2618a Aluminium
Type - Double Bridge Construction
Galvanic Process - Piston Head and First Ring

Platinum Line
Piston Material - Machined from 2618a Billet Aluminium
Type - Double Bridge Construction
Galvanic Process - Piston Head and First Ring

Double Bridge Construction
Building "box sections" on the underside of the piston
strengthens the piston and helps prevent deformation from side skirt to side skirt and across the wrist pin.
Most other pistons are "bare" on the underside

Galvanic Hardening Process
Treatment to piston head and first ring section.
Most pistons have a spray coating

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IRPP147DA

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Forged piston kit (Set of 6)
Porsche 991.2 turbo

Oversize Bore - 102.20mm



ItalianRP is a market-leading manufacturer for connecting rods and pistons located in Calabria, Italy.
Using the latest available material technology derived with Formula 1, such as double bridge construction used in every piston, from the Silver Line to the Platinum Line, high end product.
ItalianRP pistons are the culmination of years of experience in the field and made from only high-grade aluminum, which can satisfy both aeronautics and military standards.

Fits
Engine - M96.03 3.6Ltr
Porsche 991.2 turbo - 2017 to 2020

Bore - 102.20mm
Stroke - OEM
Compression Ratio - OEM
Comp. Height - OEM

Silver Line
Piston Material - Forged 4032 Aluminium
Type - Double Bridge Construction

Gold Line
Piston Material - Forged 2618a Aluminium
Type - Double Bridge Construction
Galvanic Process - Piston Head and First Ring

Platinum Line
Piston Material - Machined from 2618a Billet Aluminium
Type - Double Bridge Construction
Galvanic Process - Piston Head and First Ring

Double Bridge Construction
Building "box sections" on the underside of the piston
strengthens the piston and helps prevent deformation from side skirt to side skirt and across the wrist pin.
Most other pistons are "bare" on the underside

Galvanic Hardening Process
Treatment to piston head and first ring section.
Most pistons have a spray coating

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IRPP147D020

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Engine Pistons. 
Price is for EACH (must be purchased as a set of 6).

  

Fits:
Porsche 987.2 Boxster S 3.4ltr - 2009 to 2012
Porsche 987.2 Cayman S 3.4ltr - 2009 to 2012

Engine Type: A121

Dimension Groups: X

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9A110393409

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Engine piston.
This genuine Porsche Engine Piston is a core internal engine part for high-performance 3.8 L Porsche engines found in 997.2, 991.1, 981 Boxster Spyder, and 981C Cayman GT4 models. As a complete Porsche-specified piston, it ensures correct combustion sealing, friction characteristics, thermal resilience, and integration with OE rings and rods - preserving factory performance, durability, and engine dynamics.
Sold each, 6 required per vehicle.

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

An engine piston is a critical internal combustion engine component that reciprocates within the engine’s cylinder bore. Its primary role is to convert the expanding gas forces created by combustion into mechanical motion. When fuel and air ignite in the combustion chamber, the piston is driven downward, transmitting force through the connecting rod to the crankshaft - ultimately generating engine power. The piston also helps seal the combustion chamber, control oil consumption, and withstand extreme temperatures and pressures during operation.

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
•  Heat resistance: Made from high-strength aluminium alloy to endure extreme engine temperatures
•  Oil control: Cooperates with rings and skirt design to manage oil lubrication
•  Precision fit: Porsche-specified dimensions and surface finishes reduce friction and improve longevity

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

Pistons operate at the heart of the combustion process under extreme heat and pressure. Using a genuine Porsche OE piston means you’re getting:
•  Exact metallurgical specification matched to the engine’s operating envelope
•  Precision machining tolerances for optimal clearances and minimal friction
•  Verified durability and fatigue resistance for high RPM use
•  Factory-matching to rings and skirts for combustion sealing and minimal blow-by

Genuine OE pistons ensure reliability and longevity.

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9A110393800

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Engine piston.
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.

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9A110393800

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