Description
Product Overview
Delphi BSM B2 engine fuse and relay box (Boîtier de Servitude Moteur) suitable for Citroën and Peugeot vehicles. Supplied with product codes 9643538180 and 6500 Y1. This is a used original unit offered with a guarantee of functionality. Cosmetic wear or small damage to external mounting tabs may be present but does not affect electrical performance.
Function And Typical Faults
The BSM distributes battery power to major on‑board systems such as cooling fans, fuel pump, lighting and wipers via integrated fuses and relays. Typical symptoms indicating a faulty BSM include intermittent accessory operation, non‑functional cooling fans, fuel pump power issues, random lighting failures or repeatedly blown fuses. Common causes are moisture ingress, connector oxidation, and thermal stress on internal components.
Compatibility And Identification
Verify compatibility by matching the BSM type (B2) and the label codes on your existing unit: 9643538180 and 6500 Y1 (also shown as 6500Y1). Check connector shapes and pin layout visually. When the BSM variant and codes match, replacement is usually direct, without the need for additional programming.
Recommended Installation Procedure
For safe and reliable replacement: always disconnect the negative battery terminal first. Release connector locks and remove the original BSM from its bracket. Fit the replacement unit into the holder, fully engage and secure all connectors, and ensure correct seating. Reconnect the battery and test the operation of all circuits protected by the BSM (fans, pump, lights, wipers). Take care to avoid short circuits and to note fuse locations before removal.
Condition And Shipping
Used original Delphi unit, functionally guaranteed. The part may show normal signs of use; minor cracks or broken edge mounting tabs are cosmetic and do not impair electrical operation. Units are carefully packaged for shipment.
Technical Information
- Manufacturer: Delphi
- Model: BSM B2 (Engine Fuse/Relay Box PSA)
- Product Codes: 9643538180
- Additional Numbers: 6500 Y1, 6500Y1
If you are uncertain about compatibility, compare the codes and connector arrangement on your original unit with the information above. Matching codes and connectors are the fastest way to ensure a trouble‑free replacement and restore vehicle operation.
