Rear Window Screen Wash Cleaning

SEP d.o.o. from Mokronog, Slovenia, develops and manufactures components for complete automotive washing systems, including rear window screen wash cleaning solutions. The company’s product portfolio includes washer fluid tanks, piping, connectors, grommets, pumps, sensors and nozzles for both front and rear windows, allowing SEP to support vehicle manufacturers with individual components or complete washer system assemblies.

SEP has been active in automotive washing technology since the 1990s and today combines development, manufacturing and testing within an integrated production process. The company works with blow moulding and injection moulding technologies and can participate in a project from the first design idea through development and industrialization to serial production.

For rear window applications, reliable fluid delivery is especially important. The washing fluid must travel from the tank through the vehicle to the rear section and then reach the rear window nozzle with sufficient consistency for effective cleaning. This is why SEP does not focus only on individual nozzles but can provide the supporting components required for the entire fluid distribution path.

Rear window washer nozzles, piping and system components

A complete rear window screen wash cleaning system may include a washer fluid tank, pumps, sensors, hose assemblies, connectors, grommets and rear window nozzles. SEP manufactures the piping required to distribute washer fluid across the vehicle and also produces the injectors or nozzles where the fluid delivery system terminates.

Production is carried out in Slovenia and Bosnia and Herzegovina, giving SEP the capacity to support different manufacturing requirements and large-scale automotive projects. The headquarters in Mokronog combines research and development, sales and manufacturing, while the Bijeljina production site supports additional manufacturing operations.

SEP also has a dedicated assembly and testing department. According to the company, this unit checks the cleanliness and functionality of washer tanks and nozzles before products enter further stages of delivery. Such testing is particularly relevant for washer systems, where contamination, leakage or improper fluid distribution can affect the function of the complete system.

Flexibility is another important part of SEP’s production model. Customers can order a complete washer system or only the individual components needed for a particular vehicle platform. This makes the company suitable for both integrated development projects and component-specific sourcing.

Rear window screen wash cleaning for automotive manufacturers

SEP operates as a development supplier for the automotive industry and exports approximately 90% of its production. Its washer system and other automotive components are used by brands including Renault, Nissan, Ford, Peugeot, Volvo, Jaguar, Fiat, Volkswagen, Škoda, Citroën, Toyota, MINI, BMW, Land Rover, Mercedes and GM.

The company has developed from a small manufacturer into a supplier capable of supporting projects from early vehicle development stages. Large-scale production allows SEP to optimize manufacturing costs while maintaining precise and technologically advanced production processes.

SEP’s certified activity also includes the design, production and sale of windscreen cleaning and headlamp cleaning systems, reinforcing its specialization in automotive washing technology.

If you are looking for a manufacturing partner for rear window screen wash cleaning, rear window nozzles, piping or complete automotive washer systems, contact SEP d.o.o. in Mokronog, Slovenia. The company can support your project from component development and testing to high-volume serial production.