Genuine VW Audi Starter Generator 05E903020C Liquid-Cooled

This is a genuine new Volkswagen/Audi 48V Belt Starter Generator (BSG), part number 05E 903 020 C, manufactured by SEG (Bosch Group), made in Spain. This liquid-cooled unit is part of the vehicle’s 48V mild-hybrid system, combining the functions of alternator and starter motor — it charges the 48V and 12V batteries, enables smooth engine start/stop, and provides brief torque assistance to the engine.

Marked “48BSG_3p0_M”

Part number: 05E 903 020 C
Manufacturer: SEG (part of Bosch Group)
Condition: New – may show minor signs of handling/storage (never fitted)

Vehicle Fitment:

• VW/Audi Group vehicles with mild-hybrid (MHEV) engines — please match the exact part number printed on your original unit before ordering, as BSG units are engine/platform specific and not interchangeable across variants

Please check your old unit’s part number matches before ordering. Contact us before purchase if you’d like us to confirm compatibility with your specific vehicle.

Why Buy from Us:
✔ 100% Genuine Part
✔ Fast Same-Day Dispatch (if purchased before 2 PM)
✔ VAT invoice available on request
✔ 30-Day Returns
✔ Trusted UK Seller

The item you receive will be exactly as shown in the photos. Please see our Delivery & Returns page for shipping times, international orders, and our 30-day returns policy.