Description
BSM B2 DELPHI Engine Unit. This is a used part with a guarantee of functionality. Some mounting brackets may be damaged – this does not affect functionality.
Reliable replacement BSM B2 unit from Delphi for many Citroën and Peugeot models. This BSM (Body System Module) is commonly searched by part numbers 9650664180 and 6500Y1 and is suitable for technicians and DIY mechanics who need a direct-fit electronic module to restore electrical distribution and relay/fuse functions in the engine bay. Supplied used but guaranteed to work; visually inspect mounting tabs before installation.
Technical Information
- Manufacturer: Delphi
- Model: BSM B2
- Product Codes: 9650664180
- Additional Numbers: 6500Y1 / 6500 Y1
- Compatible Vehicles: Citroën Xsara Picasso, Peugeot 206, Peugeot 307 (check part numbers for exact fitment)
Installation Recommendations
Before starting, always disconnect the vehicle battery to avoid short circuits and potential damage to the unit. Remove any protective engine covers, unplug the electrical connectors carefully by releasing locking tabs, and unbolt the unit from its mounting points. Fit the replacement BSM in the correct orientation, secure bolts to manufacturer torque where specified, reconnect connectors ensuring full engagement, then reconnect the battery and perform a functional check (lights, starter, engine management lights, fuses/relays operation).
Use dielectric grease on exposed connector pins if available to reduce future corrosion. If the vehicle exhibits immobilizer or key-related symptoms after replacement, diagnostics and programming with PSA-capable diagnostic equipment may be required. If unsure, have the replacement performed by a qualified technician.
Why This Part Usually Fails
- Water ingress and corrosion from under-bonnet exposure leading to deteriorated contacts or circuit board damage.
- Thermal stress and vibration causing cracked solder joints or failed relays/fuses inside the module.
- Connector pin damage or broken mounting tabs from previous removals or impact—mechanical damage to clips is common but often cosmetic.
- Electrical overloads or short circuits that can blow internal fuses or damage components.
- Age-related wear after many years of service (typically appears on cars 10+ years old, depending on usage and environment).
Notes
This is a used unit supplied with a functional guarantee. Some mounting brackets may show damage; this does not affect electrical operation. Part is frequently searched by numbers 9650664180 and 6500Y1—verify the number against your existing module before purchase to ensure correct fitment.
