Gaskets


Fits:
Porsche 987.2 Boxster 2.9L 2009-12
Porsche 987C.2 Cayman 2.9L 2009-12
Click 'Zoom in' for large parts diagram.
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A111325800
The product you are viewing cross references to these numbers
- Porsche Boxster 987 MKII 2.9L 2009-2012
- Porsche Cayman 2.9L 987C MKII 2009-12

Fits:
Porsche 987.2 Boxster 2.9L 2009-12
Porsche 987C.2 Cayman 2.9L 2009-12
Click 'Zoom in' for large parts diagram.
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A111325800
The product you are viewing cross references to these numbers
- Porsche Boxster 987 MKII 2.9L 2009-2012
- Porsche Cayman 2.9L 987C MKII 2009-12

6 required, sold each.

Fits:
Porsche 987.2 Boxster S 3.4L 2009-12
Porsche 987C.2 Cayman S 3.4L 2009-12
Porsche 981 Boxster 2012-16
Porsche 981 Boxster Spyder 2016
Porsche 981C Cayman 2014-16
Porsche 981 Cayman GT4 2016
Porsche 997.2 Carrera 3.6L / 3.8L 2009-12 incl. cars with X51 Powerkit 250kW
Porsche 997.2 Turbo 3.8L 2010-13
Porsche 991.1 Carrera 2012-16 incl. cars with X51 Powerkit 250kW
Porsche 991 Turbo 2014-20
Porsche 991 GT3 3.8L / 4.0L 2014-21
Click 'Zoom in' for large parts diagram.
Diagram ref no 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A111021501
The product you are viewing cross references to these numbers
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- Porsche Boxster 981 2.7L 2012-16
- 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 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350Bhp) 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 S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
6 required, sold each.

Fits:
Porsche 987.2 Boxster S 3.4L 2009-12
Porsche 987C.2 Cayman S 3.4L 2009-12
Porsche 981 Boxster 2012-16
Porsche 981 Boxster Spyder 2016
Porsche 981C Cayman 2014-16
Porsche 981 Cayman GT4 2016
Porsche 997.2 Carrera 3.6L / 3.8L 2009-12 incl. cars with X51 Powerkit 250kW
Porsche 997.2 Turbo 3.8L 2010-13
Porsche 991.1 Carrera 2012-16 incl. cars with X51 Powerkit 250kW
Porsche 991 Turbo 2014-20
Porsche 991 GT3 3.8L / 4.0L 2014-21
Click 'Zoom in' for large parts diagram.
Diagram ref no 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A111021501
The product you are viewing cross references to these numbers
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- Porsche Boxster 981 2.7L 2012-16
- 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 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350Bhp) 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 S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16


Fits:
Porsche 987.2 Boxster 2.9L 2009-12
Porsche 987.2C Cayman 2.9L 2009-12
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A111021521
The product you are viewing cross references to these numbers
- Porsche Boxster 987 MKII 2.9L 2009-2012
- Porsche Cayman 2.9L 987C MKII 2009-12

Fits:
Porsche 987.2 Boxster 2.9L 2009-12
Porsche 987.2C Cayman 2.9L 2009-12
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A111021521
The product you are viewing cross references to these numbers
- Porsche Boxster 987 MKII 2.9L 2009-2012
- Porsche Cayman 2.9L 987C MKII 2009-12


Fits:
Porsche 981 Boxster 2012-16
Porsche 981C Cayman 2014-16
Porsche 981SP Boxster Spyder 2016
Porsche Cayman GT4 2016
Click 'Zoom in' for large parts diagram.
Diagram ref no 18
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A111031900
The product you are viewing cross references to these numbers
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
Air Inlet Engine Gaskets – Precision Sealing for Optimal Porsche Performance
Air inlet engine gaskets are crucial sealing components within your Porsche’s intake system. They ensure an airtight connection between the intake manifold, throttle body, and other air passages, preventing unmetered air from entering the engine. By maintaining proper air pressure and flow, these gaskets help your Porsche deliver smooth performance, efficient combustion, and consistent power output.
At Design911, we supply a complete selection of genuine and high-quality air inlet gaskets for various Porsche models, including 911, Boxster, Cayman, Cayenne, Macan, and Panamera models. Each gasket is designed for precise fitment, high heat resistance, and superior durability — ensuring reliable performance and long-lasting sealing under all driving conditions.
What Do Air Inlet Engine Gaskets Do?
Air inlet gaskets serve as a critical barrier that ensures
only properly metered air enters your Porsche’s engine. Their functions
include:
- Sealing
joints between intake components to prevent air leaks.
- Maintaining
correct air-fuel ratios for efficient combustion.
- Preventing
contamination from oil, dust, and debris.
- Ensuring stable engine idle and performance by regulating airflow integrity.
A high-quality gasket keeps your Porsche’s intake system perfectly balanced, contributing to smooth throttle response, better fuel efficiency, and reliable power delivery.
Why Do Air Inlet Engine Gaskets Fail?
Exposure to extreme heat, pressure, and vibration gradually
wears down air inlet gaskets. Over time, they can lose elasticity and sealing
capability. Common causes of failure include:
- Thermal
expansion and contraction causing cracks or deformation.
- Material
fatigue from continuous heat cycling.
- Oil
or coolant contamination degrading gasket integrity.
- Improper
installation or over-torquing during servicing.
- Age-related wear and drying of gasket material.
Symptoms of a failing air inlet gasket include rough idle, vacuum leaks, hissing noises, poor fuel economy, or a check engine light related to air-fuel imbalance.
Why Replace a Faulty Air Inlet Engine Gasket?
A worn or leaking air inlet gasket can allow unmetered air into the engine, disrupting combustion and reducing performance. Replacing it restores proper air sealing, improving efficiency and reliability while preventing potential damage to intake components.
Benefits of replacement include:
- Restored airtight sealing for optimal engine performance.
- Smoother idle and improved throttle response.
- Enhanced fuel efficiency and reduced emissions.
- Long-term reliability with manufacturer-quality materials.
All gaskets from Design911 are made from premium-grade composites or multi-layer materials, designed to withstand heat, pressure, and chemical exposure — ensuring consistent sealing and performance for every Porsche model.