Piaggio 576773 Air Filter Box Intake Bellows – Liberty 50, 125 and 150 (1998-2005)

The Piaggio 576773 bellows is the flexible air intake sleeve for the air filter box of the first-series Piaggio Liberty: a black rubber bellows tube, with an oval flanged opening on one side and a curve on the other, which directs air into the filter. It replaces code 464671. The official Piaggio spare parts catalog lists it for Liberty 50 2T and 4T, 50 PTT, 125 Leader, 125 La Poste and 150 Leader models from the 1998-2005 Historical Catalogs. Product code 576773.

✓ Strengths

• Original Piaggio spare part – this is the part number specified in the official spare parts catalog, not an aftermarket equivalent.
• Replaces code 464671 – if your manual lists that number, this is the spare part to order today.
• Flexible rubber – the bellows section absorbs engine vibrations without tearing at the connections.
• Direct fit – the opening and curve are molded to the original housing: it slides on and attaches without any modifications.
• A single code for the entire first series of Liberty – valid for the 50 2T and 4T and for the 125 and 150 Leader models.

Technical specifications

Vehicle compatibility

The list is taken from the official Piaggio spare parts catalog (B2B area). If you have any doubts, send us the VIN of your scooter and we will verify the correct code.

Who it is perfect for

It is the spare part for those who keep a first-series Liberty on the road: twenty-year-old rubber that hardens, cracks, and eventually tears right at the connections. Workshops and enthusiasts replace it when the scooter lacks acceleration, flutters at idle, or consumes more fuel than usual: before tinkering with the carburetor, it is advisable to check the bellows, because a crack here ruins any calibration.

Frequently Asked Questions

Which Liberty models does the Piaggio 576773 bellows fit?
It fits first-series Liberty models from the 1998-2005 Historical Catalogs: Liberty 50 2T, Liberty 50 4T, Liberty 50 PTT, Liberty 125 Leader, Liberty 125 La Poste, and Liberty 150 Leader. The table above shows the exact models and years as reported by the official catalog.

Does code 576773 replace other codes?
Yes. 576773 is the updated version of code 464671, which appears in the catalogs and manuals of the first Liberty years. If you are looking for 464671, this is the correct spare part to order today: it is the same piece with the new numbering.

Where is it located exactly on the vehicle?
It is located in the fuel system, on the air filter box: it is the black bellows tube that you see as soon as you lift the seat and remove the cover. It slides out by hand after loosening the fastener, without removing the carburetor or fairings.

How do I know if my bellows needs replacing?
Look at it against the light while bending it: if the rubber is hardened, cracked at the folds, or torn at the connections, it must be replaced. Typical symptoms are unstable idling, sluggish acceleration, and increased fuel consumption, because air that has not passed through the filter enters through the crack.

Is it an original Piaggio part or an equivalent?
It is the spare part with the Piaggio factory code 576773, original equipment. It is not an aftermarket copy: the compound, length, and shape of the connections are those specified by the manufacturer, so it mounts onto the original housing without any force or adapters.

How can I be sure it's the right one for my scooter?
Check the model and year in the compatibility table: if your Liberty does not appear, or you have a particular version, send us your VIN. We will check the code in the official Piaggio parts catalog and confirm if this bellows is the one meant for your vehicle.