Airtec Motorsport Group A air filter kit for the Ford Focus ST225 Mk2 2.5 Turbo, a simple but very effective upgrade that provides more induction sound, clearly audible turbo and wastegate sounds, and improved throttle response.
Removing the complete original airbox creates a much freer airflow towards the turbo. This allows the engine to draw in air more easily, resulting in a more direct response and a much sportier character.
In addition to performance, this upgrade also gives the engine bay a sleeker look. The kit comes with a large 80mm Group A foam cone filter and an included RS-style ECU cover for a neat OEM+ finish.
Installation is easy to perform and all necessary parts are included, including silicone hoses and stainless steel hose clamps.
Suitable for both pre-facelift and facelift Focus ST225 models.
Advantages
• More induction sound
• Clearly audible turbo and wastegate noises
• Improved throttle response
• 80 mm Group A foam filter
• Removes the restrictive OEM airbox
• Tidier engine bay
• Includes RS-style ECU cover
• Easy installation
Compatibility
Ford Focus ST225 Mk2 2.5 Turbo Pre-Facelift
Ford Focus ST225 Mk2 2.5 Turbo Facelift
Frequently Asked Questions
What will I notice after installing this air filter kit?
You can hear the turbo and wastegate working much better, while the throttle response also improves noticeably.
Does the original airbox need to be removed?
Yes, this kit replaces the complete original airbox for maximum airflow and a sportier sound.
Is the ECU cover included?
Yes, the kit comes with an RS-style ECU cover for a neat finish in the engine bay.
Does this kit fit both facelift and pre-facelift models?
Yes, this Group A kit fits all Ford Focus ST225 Mk2 models.
