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Mahle
Mahle
91111018503/1
Product Information
A genuine MAHLE engine air filter designed as a direct replacement for Porsche part 91111018503, superseding previous part numbers 91111018500, 91111018501, 91111018502, and 91111018502001. Filters dirt and airborne contaminants from the intake air before they enter the engine, helping to maintain proper airflow, efficient combustion, and reliable engine performance while protecting internal engine components from premature wear.
Fits:
Porsche 911 T-K 2.4L 1972 - 1973 Cars with mixture controller
Porsche 911 2.7L 1974 - 1977
Porsche 911 3.0L SC 1978 - 1983
Key Features & Benefits
• Genuine MAHLE OEM-quality filtration
• Direct replacement for Porsche 91111018503
• High dirt-holding capacity with excellent airflow
• Helps maintain engine performance and fuel efficiency
• Protects the engine from harmful contaminants Simple direct-fit installation
Why Replacing Your Air Filter Matters
The engine air filter gradually becomes clogged with dust and debris, restricting airflow to the engine. Replacing it at the recommended service interval helps maintain engine performance, improve fuel economy, and reduce unnecessary wear on internal engine components.
When to Replace the Air Filter
• At the manufacturer's recommended service interval
• During routine annual servicing
• If the filter appears dirty or clogged
• After driving in particularly dusty conditions
• If you notice reduced engine performance or increased fuel consumption
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111018503
The product you are viewing cross references to these numbers
Product Information
Air filterA genuine MAHLE engine air filter designed as a direct replacement for Porsche part 91111018503, superseding previous part numbers 91111018500, 91111018501, 91111018502, and 91111018502001. Filters dirt and airborne contaminants from the intake air before they enter the engine, helping to maintain proper airflow, efficient combustion, and reliable engine performance while protecting internal engine components from premature wear.
Fits:
Porsche 911 T-K 2.4L 1972 - 1973 Cars with mixture controller
Porsche 911 2.7L 1974 - 1977
Porsche 911 3.0L SC 1978 - 1983
Key Features & Benefits
• Genuine MAHLE OEM-quality filtration
• Direct replacement for Porsche 91111018503
• High dirt-holding capacity with excellent airflow
• Helps maintain engine performance and fuel efficiency
• Protects the engine from harmful contaminants Simple direct-fit installation
Why Replacing Your Air Filter Matters
The engine air filter gradually becomes clogged with dust and debris, restricting airflow to the engine. Replacing it at the recommended service interval helps maintain engine performance, improve fuel economy, and reduce unnecessary wear on internal engine components.
When to Replace the Air Filter
• At the manufacturer's recommended service interval
• During routine annual servicing
• If the filter appears dirty or clogged
• After driving in particularly dusty conditions
• If you notice reduced engine performance or increased fuel consumption
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111018503
91111018503
91111018502
91111018501
91111018500
91111018502001
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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
Price: £18.51
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
Related products
99611013171
Product Information
Genuine Porsche engine air filter, manufactured to Porsche’s exact factory specifications. This filter is the correct OEM replacement for selected Porsche 911 (996 and 997) performance models, ensuring precise fitment, correct airflow characteristics, and the level of filtration required for high-performance flat-six engines.
Fits:
Porsche 996 Turbo 2000 - 2005
Porsche 996 GT3 1999 - 2005
Porsche 996 GT2 2000 - 2005
Porsche 997.1 GT3 2007 - 2009
Porsche 997.2 GT3 2010 - 2011 (Not for RS)
Diagram ref no 2
The filter is designed to fit perfectly within the factory airbox, sealing correctly against the housing to prevent unfiltered air from entering the intake system. Using a Genuine Porsche air filter ensures the engine continues to operate exactly as Porsche intended, particularly important for high-output and motorsport-derived engines.
The engine air filter plays a critical role in protecting the engine while supporting optimal combustion. As air is drawn into the intake system, it carries dust, dirt, and microscopic debris that can cause internal engine wear if not filtered properly.
The air filter:
• Removes harmful airborne contaminants before they reach the engine
• Maintains correct airflow for efficient combustion
• Supports stable power delivery and throttle response
• Helps preserve long-term engine reliability and performance
By ensuring only clean, properly metered air reaches the combustion chambers, this filter protects vital engine components such as pistons, valves, cylinder walls, and sensors.
High-performance Porsche engines rely on precise airflow management. A clogged, incorrect, or poorly manufactured air filter can lead to restricted airflow, reduced efficiency, and increased internal wear. Using a Genuine Porsche air filter ensures:
• Factory-correct airflow and filtration balance
• Protection of sensitive internal engine components
• Maintained performance and throttle response
• Compliance with Porsche service and maintenance standards
Replace the air filter if:
• The filter element shows visible dirt or heavy discoloration
• Engine response feels reduced or inconsistent
• Fuel consumption has increased
• The vehicle has reached a scheduled service interval
• The car is driven frequently in dusty or high-pollution environments
Regular inspection and replacement help protect engine health and performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611013171
The product you are viewing cross references to these numbers
Product Information
Replacement panel air filter.Genuine Porsche engine air filter, manufactured to Porsche’s exact factory specifications. This filter is the correct OEM replacement for selected Porsche 911 (996 and 997) performance models, ensuring precise fitment, correct airflow characteristics, and the level of filtration required for high-performance flat-six engines.
Fits:
Porsche 996 Turbo 2000 - 2005
Porsche 996 GT3 1999 - 2005
Porsche 996 GT2 2000 - 2005
Porsche 997.1 GT3 2007 - 2009
Porsche 997.2 GT3 2010 - 2011 (Not for RS)
Diagram ref no 2
The filter is designed to fit perfectly within the factory airbox, sealing correctly against the housing to prevent unfiltered air from entering the intake system. Using a Genuine Porsche air filter ensures the engine continues to operate exactly as Porsche intended, particularly important for high-output and motorsport-derived engines.
The engine air filter plays a critical role in protecting the engine while supporting optimal combustion. As air is drawn into the intake system, it carries dust, dirt, and microscopic debris that can cause internal engine wear if not filtered properly.
The air filter:
• Removes harmful airborne contaminants before they reach the engine
• Maintains correct airflow for efficient combustion
• Supports stable power delivery and throttle response
• Helps preserve long-term engine reliability and performance
By ensuring only clean, properly metered air reaches the combustion chambers, this filter protects vital engine components such as pistons, valves, cylinder walls, and sensors.
High-performance Porsche engines rely on precise airflow management. A clogged, incorrect, or poorly manufactured air filter can lead to restricted airflow, reduced efficiency, and increased internal wear. Using a Genuine Porsche air filter ensures:
• Factory-correct airflow and filtration balance
• Protection of sensitive internal engine components
• Maintained performance and throttle response
• Compliance with Porsche service and maintenance standards
Replace the air filter if:
• The filter element shows visible dirt or heavy discoloration
• Engine response feels reduced or inconsistent
• Fuel consumption has increased
• The vehicle has reached a scheduled service interval
• The car is driven frequently in dusty or high-pollution environments
Regular inspection and replacement help protect engine health and performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611013171
99611013171
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
Price: £85.71
In Stock - 3- 5 Days Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
33-2189
Product Information
This Product Fits:
Porsche 911 (996) 3.6L GT2 2001-05
Porsche 911 (996) 3.6L GT3 1999-05
Porsche 911 (996) 3.6L Turbo 2000-05
K&N® washable, reusable High-Flow Air Filters™ feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower.
Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10-Year/Million Mile Limited Warranty.
K&N drop-in replacement filters are designed to install easily into your factory air box.
Works with Original Equipment Manufacturer Vehicle Electronics.
Environmentally Friendly, K&N Reusable Air Filters
Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
33-2189
The product you are viewing cross references to these numbers
Product Information
K&N High Performance replacement air filter. This Product Fits:
Porsche 911 (996) 3.6L GT2 2001-05
Porsche 911 (996) 3.6L GT3 1999-05
Porsche 911 (996) 3.6L Turbo 2000-05
K&N® washable, reusable High-Flow Air Filters™ feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower.
Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10-Year/Million Mile Limited Warranty.
K&N drop-in replacement filters are designed to install easily into your factory air box.
Works with Original Equipment Manufacturer Vehicle Electronics.
Environmentally Friendly, K&N Reusable Air Filters
Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
33-2189
99611013170
332189
33-2189
99611013171
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
Price: £78.33
In Stock - 3- 5 Days Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
99611013171/P
Product Information
Upgrade your intake system with a DesignTek Performance Air Filter, engineered to deliver increased airflow, improved throttle response, and long-lasting filtration. Designed as a direct replacement for your factory filter, DesignTek performance filters combine high-flow cotton gauze media with a durable, reusable construction - making them the ideal solution for drivers who want both performance and protection.
Fits:
Porsche 996 Turbo 2000 - 2005
Porsche 996 GT3 1999 - 2005
Porsche 996 GT2 2000 - 2005
Porsche 997.1 GT3 2007 - 2009
Porsche 997.2 GT3 2010 - 2011 (Not for RS)
Diagram ref no 2
DesignTek filters are washable and reusable, reducing the need for frequent replacements while maintaining excellent filtration efficiency. The pleated multi-layer filter media is built to capture harmful particles while allowing a greater volume of air to reach the engine - helping support more consistent power delivery and sharper acceleration.
Whether you’re driving daily, touring, or enjoying spirited performance runs, a DesignTek Performance Air Filter is a smart upgrade that provides high filtration, high flow, and long service life with minimal maintenance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611013171
The product you are viewing cross references to these numbers
Product Information
DesignTek Performance Air Filter.Upgrade your intake system with a DesignTek Performance Air Filter, engineered to deliver increased airflow, improved throttle response, and long-lasting filtration. Designed as a direct replacement for your factory filter, DesignTek performance filters combine high-flow cotton gauze media with a durable, reusable construction - making them the ideal solution for drivers who want both performance and protection.
Fits:
Porsche 996 Turbo 2000 - 2005
Porsche 996 GT3 1999 - 2005
Porsche 996 GT2 2000 - 2005
Porsche 997.1 GT3 2007 - 2009
Porsche 997.2 GT3 2010 - 2011 (Not for RS)
Diagram ref no 2
DesignTek filters are washable and reusable, reducing the need for frequent replacements while maintaining excellent filtration efficiency. The pleated multi-layer filter media is built to capture harmful particles while allowing a greater volume of air to reach the engine - helping support more consistent power delivery and sharper acceleration.
Whether you’re driving daily, touring, or enjoying spirited performance runs, a DesignTek Performance Air Filter is a smart upgrade that provides high filtration, high flow, and long service life with minimal maintenance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611013171
99611013171
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
Price: £52.50
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
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