BSM R04 DELPHI 9807028780 is an engine fuse and control box designed for Citroën and Peugeot cars. It provides power and control of a number of electrical circuits in the engine compartment (fuel pump, fans, glow plugs, relays, fuses and other components). Due to its original design, it is suitable as a replacement for a defective piece in case of power supply problems or failure of electrical functions.

Manufacturer: DELPHI
Model: BSM R04
Product codes: 9807028780
Other numbers: often also found under the designation BSM R04, possibly with minor production variations depending on the year of manufacture and engine

The part is mainly intended for selected Citroën and Peugeot models, typically from a range of commercial and family cars, such as Citroën Berlingo B9, Citroën C8, Peugeot 807 or Peugeot Partner Tepee (the specific use always depends on the engine and equipment of the car). This is a used original part from disassembly, with functional electronics. Damage to one of the plastic holders or handles may occur, but this does not affect the functionality of the unit itself or its connection.

The technical features of the part include original fuses and relays according to the specific equipment of the car, a robust connector connection and a design adapted to installation in the engine compartment. The BSM unit is a key element of the electrical installation, and therefore it is advisable to replace it in the event of symptoms such as frequent blown fuses, unstable power supply to the fuel pump, spontaneous outages of electrical appliances or oxidation of contacts in the existing cabinet.

Installation recommendations:
Before disassembling the original part, always disconnect the vehicle battery to avoid short circuits or damage to the electronics. Carefully remove the original BSM unit so as not to damage the wiring or brackets. When installing the replacement part, carefully check the cleanliness and condition of the contacts in the connectors and make sure that all harnesses are firmly and fully inserted as far as they will go. Fuses and relays must correspond to the values ​​prescribed by the car manufacturer; before starting for the first time, check their placement according to the diagram in the vehicle. After connecting the battery, perform a basic check of the functionality of the lights, fans, fuel pump and other main circuits served by the BSM unit. For a problem-free installation, it is recommended that the installation be carried out by an experienced car mechanic who has experience with the electrical installation of Citroën and Peugeot vehicles.

Key Features

Delphi BSM R05-00 front fuse/relay control unit designed for a range of Citroën and Peugeot models. Ideal for professional mechanics and experienced DIYers looking for a direct replacement for electrical distribution and control in the engine bay. Commonly searched by product codes 9666700480, 9807028780 and 9807028880 — include these numbers when searching to find the exact match quickly.

Technical Information

• Manufacturer: Delphi
• Model: Citroën Berlingo B9; Peugeot 308; Peugeot Partner Tepee
• Product Codes: 9666700480; 9807028780; 9807028880
• Other Numbers: R05-00; R05; R05/R05-00
• Function: Engine bay fuse and relay module (BSM) controlling multiple power distribution circuits and relays for lighting, wipers, starter/ignition feeds and other vehicle systems.
• Condition Note: Housing may show a cracked mounting bracket that does not affect electrical function.

Installation Recommendations

Before replacement, disconnect the negative battery terminal to avoid short circuits and loss of vehicle data. Remove any securing screws or bolts and carefully unplug all wiring connectors — take note of connector orientation and lock tabs. Mount the unit using intact mounting points; if a bracket is cracked, secure with appropriate fasteners to prevent movement. After installation, verify all fuses and relays are correctly seated and perform a function check of lights, wipers and ignition circuits. On some vehicles, final checks or basic coding may be required to restore certain convenience functions — perform vehicle diagnostics with suitable tools if anything operates intermittently.

Most Common Cause Of Failure

BSM units typically fail due to environmental and mechanical stress. The most frequent issues are water ingress and corrosion of connector pins, thermal cycling leading to solder joint fatigue, and physical damage from vibration or impact. Symptoms include intermittent electrical faults, blown fuses, non-functional relays or complete loss of affected circuits. Preventive measures include ensuring good sealing of the engine bay, clean and dry connectors, and secure mounting to minimize vibration.

Why Choose This Unit

This Delphi BSM R05-00 offers a direct-fit solution for common Citroën and Peugeot applications, with original product codes listed for fast identification. The unit is suitable for workshops and competent home mechanics who need a reliable replacement that restores central power distribution and relay control in affected vehicles.

BSM R03 DELPHI Citroén Peugeot 9664706080

The BSM (Boîtier de Servitude Moteur) module R03 from Delphi, part number 9664706080, is a crucial component of the electrical system found in Citroén and Peugeot vehicles. This unit is designed to manage and distribute electrical power within the engine compartment, ensuring reliable operation of various electronic systems.

Technical Information:

• Manufacturer: Delphi, a renowned automotive electronics supplier.
• Model: BSM R03 unit, specific version tailored for particular vehicle electrical configurations.
• Product Codes: 9666700280, 9664706080, 9675878080, 9807028680, 9807028780.
• Compatibility: Suitable for multiple Citroén and Peugeot models.

Function:

The BSM R03 unit serves as the main electrical distribution box in the vehicle’s engine bay. It controls and distributes electrical power to critical systems such as headlights, wipers, fans, and other essential components. Additionally, it protects circuits from overloads and short circuits using integrated fuses and relays.

Advantages:

• Efficient Power Distribution: Ensures reliable and effective transmission of electrical power to various vehicle systems.
• Circuit Protection: Built-in fuses and relays safeguard electrical circuits against overloads and shorts, enhancing vehicle safety.
• Reliability: High-quality Delphi components provide long service life and dependable performance for worry-free driving.

Installation:

When installing the BSM R03 unit, it is essential to connect all cables and connectors correctly following the manufacturer’s guidelines. Professional installation by a qualified technician or authorized service center is recommended to ensure proper functionality and safety of the electrical system.

Recommendations:

To maintain the optimal performance and reliability of your vehicle’s electrical systems, always use original spare parts or parts from trusted manufacturers like Delphi. Original parts guarantee compatibility and long-term durability, which are vital for the safe and efficient operation of your vehicle.

Summary:

The Delphi BSM R03 unit (9664706080) is an indispensable component for the proper functioning of the electrical systems in Citroén and Peugeot vehicles. Its high-quality construction and reliable operation ensure safe and efficient management of various electronic systems within the vehicle, keeping your vehicle electrical system running smoothly and securely.

Technical Information:

• Manufacturer: Delphi, a renowned manufacturer of automotive electronic components.
• Model: BSM R03, specific version designed for certain configurations of the vehicle’s electrical systems.
• Product Codes: 9666700280, 9664706080, 9675878080, 9807028680, 9807028780.
• Compatibility: Designed for various models of Citroën and Peugeot vehicles.

Function:

The BSM R03 unit acts as the main distribution box in the vehicle’s engine compartment. It is responsible for managing and distributing electrical energy to various systems and components, such as headlights, wipers, fans, and other critical systems. This module also protects these circuits from overloads and shorts using integrated fuses and relays.

Benefits:

• Efficient Power Distribution: Ensures reliable and efficient transfer of electrical energy to various vehicle systems.
• Circuit Protection: Integrated fuses and relays protect electrical circuits from overloads and short circuits, enhancing vehicle safety.
• Reliability: High-quality components from Delphi ensure long lifespan and reliable performance, crucial for seamless vehicle operation.

Installation:

When installing the BSM R03 unit, it is important to ensure proper connection of all cables and connectors according to the manufacturer’s specifications. It is recommended that installation be performed by a qualified technician or authorized service center to guarantee proper functionality and the safety of the entire system.

Recommendations:

To maintain optimal performance and reliability of the vehicle’s electrical systems, it is important to use original spare parts or parts from reputable manufacturers like Delphi. Using original parts ensures compatibility and long-term reliability, which is essential for safe and efficient vehicle operation.

Summary:

The BSM R03 unit from Delphi (9666700280) is a key component for the proper functioning of the electrical systems in Citroën and Peugeot vehicles. With quality workmanship and reliable performance, it ensures safe and efficient operation of various electronic systems within the vehicle. This unit is essential to ensure that the vehicle’s electrical systems operate smoothly and safely.