What is an Air Filter?
A pleated paper or foam filter that stops dirt and grit reaching the engine's intake.
Simplified animation — not to scale.
In plain English
Every breath the engine takes passes through the air filter first, which traps dust, grit and insects before they can reach the delicate intake tract and cylinders.
“The engine's equivalent of a face mask — letting air through freely while keeping the grit out.”
How it works
Air is pulled through the pleated filter element by engine vacuum on its way to the throttle bodies or carburettor. A clogged filter restricts airflow and richens the fuel mixture, while a torn one lets unfiltered grit straight through to the bore.
Signs of trouble
- ⚠Reduced power or sluggish throttle response
- ⚠Poor fuel economy
- ⚠Black, sooty smoke from the exhaust
- ⚠Visible dirt or oil saturation on inspection
What affects the repair?
We don't publish a generic price for this part because a responsible estimate needs a named motorcycle and a recent quote. These are the factors a qualified technician will weigh up.
- •Diagnosis: intermittent or system-wide faults may need dealer-level tools before the actual part can be identified.
- •Accessibility: some parts are quick to reach; others require significant fairing, tank or engine-cover removal.
- •Model differences: prices and labour times vary widely between manufacturers and specification levels.
- •New vs used: a genuine OEM part fitted at a franchised dealer costs more than a serviceable used or aftermarket part.
- •Calibration / coding: some parts require post-fit calibration, coding or a road test, which adds labour time.
Technical review pending