Control unit A2219000404 A2218706289 A2219008001 130732925203 4G0907472C 4G0907472B MAGNETI MARELLI

The 130732925203 (manufacturer code AL - Automotive Lighting / Bosch) is an OEM Xenon ballast control unit fitted as an original first-fit component on Mercedes-Benz vehicles (with original spare part number A 221 900 80 01).

What is it for?

It manages the correct operation of the gas discharge lamps (Xenon/HID) in the headlight assembly. Its main functions include:

• High-voltage ignition generation: provides the initial pulse (up to over 20 kV) to ignite the electric arc inside the lamp.

• Power stabilisation: regulates the current, keeping the lamp at its constant operating voltage (typically 35W).

• Headlight function management: controls the headlight illumination functions (low/high bi-xenon beams and the control of associated modules depending on vehicle specification).

Where and how is it installed?

• Location: It is installed externally under the lower housing of the front headlight assembly (for both right and left sides).

• Attachment and mounting: It is secured by a snap-fit or with three/four Torx screws to seal against the gasket and prevent water ingress into the headlight.

• Plug & Play: It connects directly to the headlight’s original wiring and usually does not require mechanical modifications or cutting of cables.

Main vehicle compatibility

It is mainly used on vehicles of the Mercedes-Benz group, including:

• Mercedes S-Class (W221 / V221) – Restyling/Facelift

• Mercedes CL (C216) – Restyling/Facelift

Reference codes and equivalences

• AL / Automotive Lighting / Bosch code: 1 307 329 252 03 (or 130732925203)

• Original Mercedes-Benz code: A 221 900 80 01 (A2219008001)

• Interchangeable / compatible codes: A 221 900 04 04, A 221 870 62 89, 1 307 329 252 02