Description
BSM R03 DELPHI unit for Citroën Peugeot cars
Damage to one of the holders is possible – it does not affect functionality
This is a used part with a functionality guarantee
The BSM R03 DELPHI unit with product number 9675878080 is an engine fuse and relay box designed for Citroën and Peugeot cars. It provides power and control of a whole range of electrical circuits in the engine compartment – from fuel injection, through ignition, cooling fans, fuel pump and other key appliances. A properly functioning BSM unit is essential for trouble-free starting and reliable operation of the engine and all related systems.
This particular part is especially suitable for selected Citroën and Peugeot models, it is often used, for example, in Citroën Berlingo B9, Citroën C8, Peugeot 807 or Peugeot Partner Tepee cars (always depending on the specific equipment and engine). When replacing the old unit with this one, it is important that the BSM type (R03), manufacturer and part code match – this greatly increases the chance of full compatibility without the need for wiring modifications.
The unit may have some of its plastic holders or handles damaged, but this does not affect its electrical functionality or reliability in operation. It is a used original part with a guarantee of functionality, which is significantly cheaper compared to a new part, but at the same time maintains the quality workmanship and durability expected of original equipment. For car mechanics and home repairers alike, it is an effective way to cheaply and quickly solve faults in the electrical installation in the engine compartment – typically problems with starting, loss of power to certain circuits or error messages related to power branches.
Technical information
Manufacturer: DELPHI
Model: BSM R03
Part Type: Engine Fuse and Relay Unit (BSM) for Citroën/Peugeot cars
Product codes: 9675878080
Other numbers: there may be other DELPHI or PSA internal codes on the body of the unit, which indicate the production series or minor variants; when choosing a part, it is essential that the BSM type (R03) and code 9675878080 match.
Advantages of using the original DELPHI R03 BSM unit
– High compatibility with the electrical installation of Citroën and Peugeot cars
– Original quality from the manufacturer, which supplies directly to primary production
– Reliable power supply of all important circuits in the engine compartment
– The possibility of a quick replacement for the original unit without interfering with the cabling
– Significantly lower price compared to a new original part
Installation recommendations
Before disassembling the old BSM unit, always disconnect the vehicle battery (negative pole first) and only then work with the wiring. Release the unit from the holders in the engine compartment and gradually disconnect all the connectors – it is recommended to mark them or take pictures of the current state to avoid confusion during assembly. When installing a new unit, check the cleanliness and condition of the contacts, gently remove any corrosion and insert the connectors firmly as far as they will go. Make sure that the unit is seated correctly in the holders so that the cabling is not stretched and there are no extra vibrations.
After assembly, reconnect the battery (first positive, then negative pole) and test the function of all systems powered via the BSM – engine start, lights, cooling fan, or other appliances depending on the equipment. With some cars, it may be necessary to erase error codes from the memory of the control unit by diagnostics after the replacement, so it is advisable to have a diagnostic tool available or count on a check after the first start. Careful assembly and inspection of all connections significantly extends the life of the unit and minimizes the risk of further faults in the electrical system.
