These K&N replacement air filters are designed to increase horsepower, improve airflow by capturing contaminants and lasts for the entire lifespan of your vehicle. The design of this air filter uses layered, oiled cotton media thus it is washable and reusable. These drop-in replacement air filters are specifically designed to fit in your car's factory air box. These filters not only put you at ease as they are easy to install but are also responsible for the high performance.

These air filters suit BMW X series fitted with N63B44TU and N63B44B V8 engines.

Key Features:

• Provides high air flow with exceptional filtration.
• Lasts up to 80,000km before cleaning is required depending on the driving conditions.
• Will NOT void vehicle warranty.
• K&N 10 year/million mile limited warranty.

Contents:

• 2 X Air filter​

Vehicle Fitment Guide

This Mace ETC and K&N's air filter have been put together to meet the performance upgrade requirements of BMW X5 N63B44TU V8 engine.

Mace ETC eliminates the delay that exists between the throttle pedal and the butterfly in the throttle body, re-establishing throttle response and bottom-end acceleration while improving low torque. There are different performance modes in this ETC that helps you to increase throttle response and improve overall drivability.

The K&N replacement air filter is designed to boost the horsepower and acceleration while providing superior filtration. It is washable and reusable and is custom designed to fit into your existing factory air box. This filter lasts up to 80,000km before cleaning is required depending upon driving conditions. It comes with K&N million mile limited warranty and it will not void vehicle warranty.

Modes of ETC:

• Sport Mode: 9 stages of increased accelerator response suited for spirited driving.
• Economy Mode: Reduced accelerator response suited for economy driving around towns and on highways.
• Normal Mode: Factory throttle response.

ETC Features:

• OBD.II free, meaning power is sourced directly from the pedal and additional plugs are no longer required.
• Temperature ranges from -40 to 125 °C.
• Previously set stage numbers are retained thanks to Power off memory function.
• Digital signal output AD/DA up to 10 Bit, efficiently responds to the original throttle signal.

Air Filter Specifications:

• Air filter shape: Unique
• Height: 2.125 in (54 mm)

Contents:

• 1 X Mace ETC
• 2 X K&N Air filter

​Vehicle Fitment Guide

Notes:

• Installation of the Mace ETC is quite simple and the modification is completely reversible within a couple of minutes. All kits include simple fitting and calibration instructions.
• The air filter included in this package can be purchased separately through another listing.
• The ETC included in this package can be purchased separately through another listing.

This Mace ETC and K&N's air filter have been put together to meet the performance upgrade requirements of Alfa Romeo 939A5, 939A2 and 939B1 I4 engines.

Mace ETC eliminates the delay that exists between the throttle pedal and the butterfly in the throttle body, re-establishing throttle response and bottom-end acceleration while improving low torque. There are different performance modes in this ETC that helps you to increase throttle response and improve overall drivability.

The K&N replacement air filter is designed to boost the horsepower and acceleration while providing superior filtration. It is washable and reusable and is custom designed to fit into your existing factory air box. This filter lasts up to 80,000km before cleaning is required depending upon driving conditions. It comes with K&N million mile limited warranty and it will not void vehicle warranty.

Modes of ETC:

• Sport Mode: 9 stages of increased accelerator response suited for spirited driving.
• Economy Mode: Reduced accelerator response suited for economy driving around towns and on highways.
• Normal Mode: Factory throttle response. 

ETC Features:

• OBD.II free, meaning power is sourced directly from the pedal and additional plugs are no longer required.
• Temperature ranges from -40 to 125 °C.
• Previously set stage numbers are retained thanks to Power off memory function.
• Digital signal output AD/DA up to 10 Bit, efficiently responds to the original throttle signal.

Air Filter Specifications:

• Air filter shape: Oval straight
• Outside length: 7.438 in (189 mm)
• Outside width: 5.5 in (140 mm)
• Height: 9.656 in (245 mm) 

Contents:

• 1 X Mace ETC
• 1 X K&N Air filter

​Vehicle Fitment Guide

Notes:

• Installation of the Mace ETC is quite simple and the modification is completely reversible within a couple of minutes. All kits include simple fitting and calibration instructions.
• The air filter included in this package can be purchased separately through another listing.
• The ETC included in this package can be purchased separately through another listing.

This Mace ETC and K&N's air filter have been put together to meet the performance upgrade requirements of Chevrolet Corvette fitted with LS3 and LS7 V8 engines.

Mace ETC eliminates the delay that exists between the throttle pedal and the butterfly in the throttle body, re-establishing throttle response and bottom-end acceleration while improving low torque. There are different performance modes in this ETC that helps you to increase throttle response and improve overall drivability.

The K&N replacement air filter is designed to boost the horsepower and acceleration while providing superior filtration. It is washable and reusable and is custom designed to fit into your existing factory air box. This filter lasts up to 80,000km before cleaning is required depending upon driving conditions. It comes with K&N million mile limited warranty and it will not void vehicle warranty.

Modes of ETC:

• Sport Mode: 9 stages of increased accelerator response suited for spirited driving.
• Economy Mode: Reduced accelerator response suited for economy driving around towns and on highways.
• Normal Mode: Factory throttle response.

ETC Features:

• OBD.II free, meaning power is sourced directly from the pedal and additional plugs are no longer required.
• Temperature ranges from -40 to 125 °C.
• Previously set stage numbers are retained thanks to Power off memory function.
• Digital signal output AD/DA up to 10 Bit, efficiently responds to the original throttle signal.

Air Filter Specifications:

• Air filter shape: Unique
• Base outside length: 13.375 in (340 mm)
• Base outside width: 4 in (102 mm)
• Height: 6.375 in (162 mm)

Contents:

• 1 X Mace ETC
• 1 X K&N Air filter

Vehicle Fitment Guide 

Notes:

• Installation of the Mace ETC is quite simple and the modification is completely reversible within a couple of minutes. All kits include simple fitting and calibration instructions.
• The air filter included in this package can be purchased separately through another listing.
• The ETC included in this package can be purchased separately through another listing.

This Mace ETC and K&N's air filter have been put together to meet the performance upgrade requirements of Chevrolet Corvette fitted with the LS9 Supercharged V8 engine.

Mace ETC eliminates the delay that exists between the throttle pedal and the butterfly in the throttle body, re-establishing throttle response and bottom-end acceleration while improving low torque. There are different performance modes in this ETC that helps you to increase throttle response and improve overall drivability.

The K&N replacement air filter is designed to boost the horsepower and acceleration while providing superior filtration. It is washable and reusable and is custom designed to fit into your existing factory air box. This filter lasts up to 80,000km before cleaning is required depending upon driving conditions. It comes with K&N million mile limited warranty and it will not void vehicle warranty.

Modes of ETC:

• Sport Mode: 9 stages of increased accelerator response suited for spirited driving.
• Economy Mode: Reduced accelerator response suited for economy driving around towns and on highways.
• Normal Mode: Factory throttle response.

ETC Features:

• OBD.II free, meaning power is sourced directly from the pedal and additional plugs are no longer required.
• Temperature ranges from -40 to 125 °C.
• Previously set stage numbers are retained thanks to Power off memory function.
• Digital signal output AD/DA up to 10 Bit, efficiently responds to the original throttle signal.

Air Filter Specifications:

• Air filter shape: Unique
• Base outside length: 13.375 in (340 mm)
• Base outside width: 4 in (102 mm)
• Height: 6.375 in (162 mm)

Contents:

• 1 X Mace ETC
• 1 X K&N Air filter

Vehicle Fitment Guide 

Notes:

• Installation of the Mace ETC is quite simple and the modification is completely reversible within a couple of minutes. All kits include simple fitting and calibration instructions.
• The air filter included in this package can be purchased separately through another listing.
• The ETC included in this package can be purchased separately through another listing.

This Mace ETC and K&N's air filter have been put together to meet the performance upgrade requirements of Chevrolet Corvette fitted with LT1 and LT4 V8 engines.

Mace ETC eliminates the delay that exists between the throttle pedal and the butterfly in the throttle body, re-establishing throttle response and bottom-end acceleration while improving low torque. There are different performance modes in this ETC that helps you to increase throttle response and improve overall drivability.

The K&N replacement air filter is designed to boost the horsepower and acceleration while providing superior filtration. It is washable and reusable and is custom designed to fit into your existing factory air box. This filter lasts up to 80,000km before cleaning is required depending upon driving conditions. It comes with K&N million mile limited warranty and it will not void vehicle warranty.

Modes of ETC:

• Sport Mode: 9 stages of increased accelerator response suited for spirited driving.
• Economy Mode: Reduced accelerator response suited for economy driving around towns and on highways.
• Normal Mode: Factory throttle response.

ETC Features:

• OBD.II free, meaning power is sourced directly from the pedal and additional plugs are no longer required.
• Temperature ranges from -40 to 125 °C.
• Previously set stage numbers are retained thanks to Power off memory function.
• Digital signal output AD/DA up to 10 Bit, efficiently responds to the original throttle signal.

Air Filter Specifications:

• Air filter shape: Unique
• Base outside length: 9.625 in (244 mm)
• Base outside width: 5 in (127 mm)
• Height: 83438 in (214 mm)

Contents:

• 1 X Mace ETC
• 1 X K&N Air filter

Vehicle Fitment Guide

Notes:

• Installation of the Mace ETC is quite simple and the modification is completely reversible within a couple of minutes. All kits include simple fitting and calibration instructions.
• The air filter included in this package can be purchased separately through another listing.
• The ETC included in this package can be purchased separately through another listing.

This Mace ETC and K&N's air filter have been put together to meet the performance upgrade requirements of Alfa Romeo 159 939A3 I4 engine.

Mace ETC eliminates the delay that exists between the throttle pedal and the butterfly in the throttle body, re-establishing throttle response and bottom-end acceleration while improving low torque. There are different performance modes in this ETC that helps you to increase throttle response and improve overall drivability.

The K&N replacement air filter is designed to boost the horsepower and acceleration while providing superior filtration. It is washable and reusable and is custom designed to fit into your existing factory air box. This filter lasts up to 80,000km before cleaning is required depending upon driving conditions. It comes with K&N million mile limited warranty and it will not void vehicle warranty.

Modes of ETC:

• Sport Mode: 9 stages of increased accelerator response suited for spirited driving.
• Economy Mode: Reduced accelerator response suited for economy driving around towns and on highways.
• Normal Mode: Factory throttle response.

ETC Features:

• OBD.II free, meaning power is sourced directly from the pedal and additional plugs are no longer required.
• Temperature ranges from -40 to 125 °C.
• Previously set stage numbers are retained thanks to Power off memory function.
• Digital signal output AD/DA up to 10 Bit, efficiently responds to the original throttle signal.

Air Filter Specifications:

• Air filter shape: Oval straight
• Outside length: 7.438 in ( 189 mm)
• Outside width: 5.5 in (140 mm)
• Height: 9.656 in (245 mm)

Contents:

• 1 X Mace ETC
• 1 X K&N Air filter

Vehicle Fitment Guide

Notes:

• Installation of the Mace ETC is quite simple and the modification is completely reversible within a couple of minutes. All kits include simple fitting and calibration instructions.
• The air filter included in this package can be purchased separately through another listing.
• The ETC included in this package can be purchased separately through another listing.

This K&N replacement air filter is designed to meet and exceed OEM specifications. This air filter is responsible for increasing the horsepower and acceleration while providing excellent filtration. It is manufactured from high quality cotton, pre-oiled for outstanding dust retention. It is washable, reuseable and is custom designed to fit into your existing factory air box.

This air filter has been specifically designed to suit the Alfa Romeo vehicles fitted with the 939A2, 939A5 and 939B1 I4 engines.

Key Features:

• High air flow with exceptional filtration.
• Lasts up to 80,000km before cleaning is required depending on the driving conditions.
• Works with original equipment manufacturer vehicle electronics.
• Will NOT void vehicle warranty.
• K&N million mile limited warranty.

Contents:

• 1 X Air filter

Vehicle Fitment Guide

This K&N replacement air filter is designed to meet and exceed OEM specifications. This air filter is responsible for increasing the horsepower and acceleration while providing excellent filtration. It is manufactured from high quality cotton, pre-oiled for outstanding dust retention. It is washable, reuseable and is custom designed to fit into your existing factory air box.

This air filter has been specifically designed to suit the Alfa Romeo vehicles fitted with the 939A2, 939A5 and 939B1 I4 engines.

Key Features:

• High air flow with exceptional filtration.
• Lasts up to 80,000km before cleaning is required depending on the driving conditions.
• Works with original equipment manufacturer vehicle electronics.
• Will NOT void vehicle warranty.
• K&N million mile limited warranty.

Contents:

• 1 X Air filter

Vehicle Fitment Guide

This K&N replacement air filter is designed to meet and exceed OEM specifications. This air filter is responsible for increasing the horsepower and acceleration while providing excellent filtration. It is manufactured from high quality cotton, pre-oiled for outstanding dust retention. It is washable, reuseable and is custom designed to fit into your existing factory air box.

This air filter has been specifically designed to suit the Alfa Romeo vehicles fitted with the 939A2, 939A5 and 939B1 I4 engines.

Key Features:

• High air flow with exceptional filtration.
• Lasts up to 80,000km before cleaning is required depending on the driving conditions.
• Works with original equipment manufacturer vehicle electronics.
• Will NOT void vehicle warranty.
• K&N million mile limited warranty.

Contents:

• 1 X Air filter

Vehicle Fitment Guide