citroen xantia Available Here. Clean air is vital to the efficient operation of your vehicle’s engine. Air filters block out harmful dirt and other debris from entering the combustion chambers, yet allow enough clear air to pass through for a proper balance of air and fuel. Fuel economy is positive or negatively impacted by the condition of your filter, which should ideally be swapped out every 15,000kmor so, depending on your vehicle’s make and model. Beneath the bonnet, make sure you install only quality air filters such as the ones available at MicksGarage.com. Our website is designed with simple menus, to help you find the right products for your vehicle.