Piaggio 581636 Complete Right Rear Turn Signal – Vespa ET4 125-150 Leader (2000-2005)

The Piaggio 581636 rear right turn signal is the complete original indicator — clear lens, reflective body, and bulb holder — specified in the official spare parts catalog for the Vespa ET4 125 and 150 with Leader engine (2000-2005). It mounts on the right side, near the taillight. Product code 581636.

✓ Strengths

• Original Piaggio spare part – this is the same code specified in the official spare parts catalog, not an aftermarket equivalent.
• Complete indicator – lens, chrome reflective body, and bulb holder with connector: it replaces the entire unit, without reusing parts from the old one.
• Ribbed clear lens – the standard finish for the ET4 Leader, with an internal orange diffuser.
• Exact position – position 3 in the "Taillight" diagram of the electrical system, one piece per side.
• Direct mounting – the housing, attachments, and connector are original, without adaptations.

Technical specifications

Vehicle compatibility

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

Who it's perfect for

It's the spare part for those who own a Vespa ET4 Leader and have a broken, opaque, or cracked rear right turn signal after a fall or twenty years of sun exposure. The lens is the first thing that breaks in a parking lot, and it's also the primary reason for failing inspection. Replacing it with the original part means finding the right housing, the right connector, and approved lighting, without gluing or adapters.

Frequently Asked Questions

Which Vespa models does the Piaggio 581636 turn signal fit?
The 581636 turn signal is specified in the official spare parts catalog for the Vespa ET4 125 Leader and the Vespa ET4 150 Leader, both produced from 2000 to 2005. This is the model with the 4-stroke Leader engine: if your scooter is an ET4 from those years, this is the correct rear right indicator.

Is it the right or left turn signal? What is the code for the other one?
This is the rear right turn signal, meaning the one visible on the right side when looking at the scooter from behind. In the same catalog diagram, the rear left turn signal has code 581635. The two parts are not interchangeable: the shape is mirrored.

Where exactly is it located on the vehicle?
It is located in the taillight assembly, on the cowl behind the seat. In the official Piaggio spare parts catalog, it is position 3 in the "Taillight" diagram of the electrical system. One piece is specified per side, so two rear turn signals in total per vehicle.

Is the bulb included in the package?
No. In the official catalog, the bulb is a separate item from the indicator: it is the 12V 10W bulb, Piaggio code 181746. If yours is blackened or burnt out, it is advisable to order it along with the turn signal and replace both at once.

Is it an original Piaggio spare part or an equivalent?
It is an original Piaggio Group spare part, with factory code 581636. It is not an aftermarket equivalent: the shape, mounting housing, and connector are those specified by the manufacturer, so installation is direct and the light remains officially approved as standard.

How can I be sure it's the right one for my scooter?
Check the model and year in the compatibility table: it must be an ET4 125 or 150 with a Leader engine, from 2000 to 2005. If you are unsure of the version, send us your frame number: we will check the code in the official Piaggio catalog and confirm if this is the correct indicator.