Piston Rings
6 sets per engine. Price is for 1 set.

Fits:
Porsche 987.1 Boxster S 3.4ltr - 2009 to 2012
Porsche 987.1 Boxster RS Spyder 3.4ltr - 2009 to 2012
Porsche 987.1 Cayman S 3.4ltr - 2009 to 2013
Porsche 987.1 Cayman R 3.4ltr - 2009 to 2013
Engine types - M96.21 / M97.22
Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98710305302
The product you are viewing cross references to these numbers
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- Porsche Cayman S / R 3.4L 987C MKII 2009-12

x6 Sets Per Engine Required.
Price Is For 1 Set.
Fits:
Porsche 986 Boxster 2.7L 1999>>2004 M96.22 / M96.23
Porsche 987 Boxster 2.7L 2005>>2008 M96.25 / M97.20
Porsche 987C Cayman 2.7L 2006>>2008 M97.20
Diagram Ref No 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610307300
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster 987 2.7L 2005 -08/08
- Porsche Cayman 2.7L 987C 2006-08
x6 Sets Per Engine Required.
Price Is For 1 Set.
Fits:
Porsche 986 Boxster 2.7L 1999>>2004
Porsche 987 Boxster 2.7L 2005>>2008
Porsche 987C Cayman 2.7L 2006>>2008
Diagram Ref No 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610307300
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster 987 2.7L 2005 -08/08
- Porsche Cayman 2.7L 987C 2006-08

6 sets per engine. Price is for 1 set.

Fits:
Porsche 987.2 Boxster S 3.4L MA1.21
Porsche 987C.2 Cayman S 3.4L MA1.21
Porsche 997.2 Carrera 3.6L MA1.02
Porsche 981 Boxster S 3.4L MA1.23
Porsche 981C Cayman S 3.4L MA1.23
Porsche 991 Carrera 3.4L MA1.04
Cylinder Bore: ø97 mm
Component Number:
1. R 1.2 N
2. NM 1.5 P
3. 3S 2.0 N
Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A110306502
The product you are viewing cross references to these numbers
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman S / GTS 3.4L 981 2013-16
6 sets per engine. Price is for 1 set.

Fits:
Porsche 987.2 Boxster S 3.4L MA1.21
Porsche 987C.2 Cayman S 3.4L MA1.21
Porsche 997.2 Carrera 3.6L MA1.02
Porsche 981 Boxster S 3.4L MA1.23
Porsche 981C Cayman S 3.4L MA1.23
Porsche 991 Carrera 3.4L MA1.04
Cylinder Bore: 97,00 mm
Component Number:
1. R 1.2 N
2. NM 1.5 P
3. 3S 2.0 N
Click 'Zoom in' for large parts diagram.
Diagram ref no 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A110306502
The product you are viewing cross references to these numbers
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman S / GTS 3.4L 981 2013-16

6 sets per engine. Price is for 1 set.

Fits:
Porsche 997.2 3.8L 2009-2012 MA1.01 Engines
Porsche 997.2 Turbo 3.8L 2009-2012 MA1.70 Engines
Porsche 991 3.8L Carrera S MA1.03 Engines
Porsche 991 Turbo 3.8L
Porsche 987C Cayman GT4 2016
ø97 mm,
Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A110307502
The product you are viewing cross references to these numbers
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560Bhp) 2014-16
- Porsche Cayman GT4 3.8L 2015-16
6 sets per engine. Price is for 1 set.

Fits:
Porsche 997.2 3.8L 2009-2012 MA1.01 Engines
Porsche 997.2 Turbo 3.8L 2009-2012 MA1.70 Engines
Porsche 991 3.8L Carrera S MA1.03 Engines
Porsche 991 Turbo 3.8L
Porsche 987C Cayman GT4 2016
ø97 mm,
Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A110307502
The product you are viewing cross references to these numbers
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560Bhp) 2014-16
- Porsche Cayman GT4 3.8L 2015-16

6 sets per engine. Price is for 1 set.
Fits:
Porsche Boxster 3.4L
Porsche Cayman 3.4L
M97.21 & M97.22 Engines
Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98710305302
The product you are viewing cross references to these numbers
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman S / R 3.4L 987C MKII 2009-12

6 sets per engine. Price is for 1 set.
Fits:
Porsche Boxster 3.4L
Porsche Cayman 3.4L
M97.21 & M97.22 Engines
Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98710305302
The product you are viewing cross references to these numbers
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
6 sets per engine. Price is for 1 set.

Fits:
Porsche Boxster 3.4L
Porsche Cayman 3.4L
M97.21 & M97.22 Engines
Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98710305302
The product you are viewing cross references to these numbers
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Piston Rings – Precision Engine Sealing & Performance for Porsche Models
The piston rings in your Porsche engine are critical components that maintain compression, regulate oil consumption, and ensure efficient combustion. Positioned around the pistons, they create a tight seal between the piston and cylinder wall, keeping combustion gases contained while allowing smooth piston movement.
At Design911, we supply a comprehensive range of piston rings designed for both classic and modern Porsche engines. Manufactured from high-strength, heat-resistant materials, these rings deliver exceptional sealing, reduced friction, and long-term reliability. Whether you’re performing a full engine rebuild or a top-end refresh, our quality piston rings are engineered for perfect fitment and optimum performance.
What Do Piston Rings Do?
Piston rings perform three vital functions within the
engine:
- Sealing
the combustion chamber – to prevent gas leakage and maintain
compression.
- Controlling
oil consumption – by scraping excess oil from the cylinder walls.
- Conducting heat – transferring it from the piston to the cylinder wall to prevent overheating.
These rings are essential for maintaining engine
efficiency, power output, and longevity. Properly functioning piston rings
ensure consistent compression, clean emissions, and smooth performance.
Why Do Piston Rings Fail?
Piston rings are subject to intense heat, pressure, and friction. Over time, these conditions can lead to wear, loss of sealing ability, or even engine damage.
Common Causes of Piston Ring Failure Include:
- Excessive
wear or scoring from poor lubrication or debris.
- Carbon
build-up causing sticking or uneven sealing.
- Overheating
that leads to ring warping or loss of tension.
- Corrosion
or fatigue from oil contamination.
- Improper installation during rebuilds or maintenance.
Symptoms of worn piston rings include blue exhaust smoke, loss of compression, reduced performance, or excessive oil consumption — all signs that replacement is required.
Why Replace Piston Rings?
Replacing worn or damaged piston rings restores compression, improves combustion efficiency, and protects your Porsche engine from further wear. Our high-performance piston rings are built to withstand extreme conditions, ensuring consistent sealing and reduced friction.
Key Benefits:
- Restores compression and engine power.
- Reduces oil consumption and exhaust smoke.
- Improves fuel efficiency and combustion quality.
- Constructed from durable, heat- and corrosion-resistant alloys.
- Direct-fit
compatibility for a wide range of Porsche models.
- Ideal for rebuilds, restorations, or performance upgrades.
Investing in premium-quality piston rings ensures lasting performance, smoother running, and optimal engine reliability.
Highlights:
- Precision-engineered piston rings for Porsche engines.
- Restores compression, performance, and oil control.
- Made from high-strength, wear-resistant materials.
- Perfect fit for classic and modern Porsche models.
- Essential for rebuilds and long-term engine health.
- Ensures smooth, efficient combustion and lower emissions.