Description
Delphi BSM B2 Fuse And Relay Box For PSA Engine Bay
This listing is for a used original Delphi BSM B2 fuse and relay box suitable for Citroën & Peugeot vehicles in the PSA group. The unit is sold with a functional guarantee. Some mounting tabs may show cosmetic damage; this does not affect electrical performance or operation.
The BSM B2 acts as a central power distribution and switching hub in the engine compartment, managing key circuits such as headlights, wipers, fuel pump, radiator fan, ignition and other ancillary devices. A correctly functioning BSM ensures stable power delivery and reliable switching of critical vehicle systems.
The offered part is identified as BSM B2 (Delphi) and carries product codes 9650664180 and 6500.Y1. When selecting a replacement, always compare OEM numbers, the BSM type (B2), connector pinout and the fuse/relay layout with your original unit to confirm full compatibility. This type is used across selected Citroën and Peugeot models; verify fitment specifically by part codes.
Typical symptoms of a failing BSM include intermittent electrical circuit failures, non-functioning fuel pump, radiator fan running without command, lighting or wiper malfunctions, and problems with engine starting. Root causes commonly include age-related corrosion, moisture ingress or thermal/mechanical stress affecting solder joints and relays.
Replacement procedure (overview): Disconnect the negative battery terminal before starting. Locate the BSM in the engine bay (commonly near the battery), release the securing clips, unplug the multi-pin connectors and remove the unit. Transfer fuses and relays if necessary and install an identical BSM type. Mechanical replacement is straightforward and, for most installations of this type, no module coding is required. After installation check fuse values and perform basic diagnostic checks for stored fault codes.
This used Delphi original part is a cost-effective, fast replacement option ideal for professional workshops and DIY mechanics who need a reliable repair without long waiting times for new parts.
Technical Information
- Manufacturer: Delphi
- Model: BSM B2 (Engine Bay Fuse/Relay Box – PSA)
- Product Codes: 9650664180, 6500.Y1 (6500Y1)
- Additional Numbers: PSA Designation: BSM B2
