Peugeot Citroen Ford Volvo Relay Glow Plug Module 8 Pins Unit Black 9666671780

Peugeot Citroen Ford Volvo Relay Glow Plug Module 8 Pins Unit Black is a control component for glow plug operation in diesel engines, responsible for the precise switching on and off of the heating circuit. Thanks to the use of an original design intended for Peugeot group vehicles, it ensures stable operating parameters of the starting system and consistent performance under varying operating conditions. This used component allows for a technically correct repair of the glow plug power supply system while maintaining a favorable cost-to-functionality ratio.

Specifications and technical data

• SKU: 9666671780
• Mark: Peugeot
• Condition: Used
• OEM Part Number: 9666671780
• Substitutable numbers: 9666671780, 96 666 717 80, 51299049, 51 299 049, KD
• Color: Black
• Category: Glow Plugs

Purpose and technical function

The glow plug relay plays a key role in the diesel engine starting system by controlling the timing and intensity of the glow plug power supply. It is responsible for:

• controlling the power supply to the glow plugs during the pre-heating phase of the combustion chamber,
• stable maintenance of heating after the engine has started, if required by the engine control strategy,
• protecting the circuit against overload by properly disconnecting the power supply.

As a result, the starting system maintains repeatable parameters, and the engine starts efficiently even at lower ambient temperatures.

Construction and functional features

The relay housing is black, which facilitates integration with the factory wiring harness and engine bay equipment, ensuring a consistent appearance and easy identification during service work. The design is prepared for compatibility with the factory wiring of vehicles where this type of glow plug control was intended by the manufacturer.

The element was designed as a component of the glow plug control system in vehicles of brands structurally related to Peugeot, which translates into electrical and mechanical compatibility with the corresponding Citroen and Ford models that utilized shared technical solutions.

Benefits of using the glow plug relay

Using this relay to replace a worn or damaged component allows for the restoration of proper heating system operation without the need to interfere with other components. The main advantages include:

• maintaining the correct glow plug heating time in accordance with the vehicle manufacturer's specifications,
• reducing cold-start problems resulting from improper circuit control,
• the possibility of a technically correct system repair without modifying the electrical installation.

For workshops and individual users, this means efficient removal of faults related to the heating system while maintaining the factory control concept.

Integration with the vehicle system and part selection

The glow plug relay is a component that works with the engine control module and glow plugs; therefore, when selecting parts, it is essential to match them to the specific vehicle configuration. The product has a dedicated OEM part number and associated interchangeable numbers, which facilitates verification of compatibility with a specific model in service catalogs and parts selection systems.

In the case of vehicles from the Peugeot, Citroen, and Ford groups that used shared powertrain solutions, the correct selection of the relay allows for avoiding communication problems with the engine electronics and ensures the proper operation of the heating system across the entire engine operating range.

System expansion and additional information

If you are planning a comprehensive repair or upgrade of the engine area in your Peugeot and need other elements from the same group, such as glow plug controllers, power cables, or control modules, check the available parts in the Peugeot Glow Plugs category.

For those interested in a broader context of powertrain construction and differences in solutions used in standard and sports versions, comparative materials regarding engines, brakes, and chassis may be useful, available in the article Audi RS vs other models – what is hidden under the hood and chassis?, which discusses the manufacturers' approach to designing key components.