BMW E60 E63 E87 E90 E91 Relay Make Contact Orange Bosch 4 Pins Set 1378238

The BMW E60 E87 E90 E91 TYCO Relay Kit 1378238 is an original electrical component from the BMW group, designed for use in the electrical systems of E60, E87, E90, and E91 series vehicles. This used relay, in a distinctive orange color, allows for an economical yet technically correct repair of the electrical consumers control system in your car.

Specifications and technical data

• SKU: 1378238-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 1378238
• Substitutable numbers: 1378238, 61361378238, 8373700, 61368373700, 9057005, 61319057005, 1378297, 61311378297, 1714976, 12631714976, 8366600, 61368366600, 1735424, 12631735424, 1459577, 61311459577, 1350315, 61311350315, 0141229, 61360141229, 0332019456, 61311378301, 1378301
• Color: Orange
• Category: Relays

Relay Application and Function

The presented TYCO relay acts as an intermediary element between low-current control signals and higher-load circuits in the BMW electrical system. It is responsible for reliably switching selected consumers on, stabilizing system operation, and reducing the load on control modules. Its construction, compliant with the vehicle manufacturer's requirements, ensures proper operating parameters and switching characteristics.

As part of the Relays group, it is designed to operate within the relay compartment or fuse box, where it is exposed to temperature fluctuations and vibrations. Using an original solution helps maintain the factory control logic and compatibility with the existing wiring harness.

Compatibility with BMW Models

The relay has been developed for the BMW E60, E87, E90, and E91 platforms, ensuring electrical and mechanical compatibility with these generations. The connector and housing design allows for installation in manufacturer-specified sockets without requiring modifications to the system. This makes the component suitable for both routine repairs and restoring the original equipment configuration.

The presence of dedicated part numbers and interchangeable numbers in the technical specifications facilitates verification of compatibility with specific engine and equipment versions of the vehicle. If in doubt, it is advisable to compare the markings with the data in the service documentation or the existing component installed in the car.

Component Construction, Color, and Identification

The relay housing is made in an orange color, which aids in quick identification within the relay box and reduces the risk of errors during servicing. The color scheme is consistent with the manufacturer's markings, making it easier for a mechanic or user to restore the original component layout.

As a product identified in the inventory system by SKU and a dedicated OEM part number, the relay is unambiguously identifiable in catalogs and service systems. Information on interchangeable numbers available in the specifications section allows for selecting a suitable replacement within the same component family, while maintaining electrical and mechanical parameters.

Condition, Origin, and Benefits of Use

This component comes from the BMW line and is marked as used, which helps reduce repair costs while maintaining original construction. For many users and workshops, this represents a sensible compromise between price and compliance with factory solutions. Using an original relay minimizes the risk of fitment issues that can occur with randomly selected universal replacements.

A properly selected relay contributes to:

• stable operation of electrical consumers in the vehicle,
• reducing the load on control modules and switches,
• decreasing the risk of overheating contacts and wiring harnesses,
• maintaining the factory safety parameters of the electrical system.

Technical Support and Additional Information

Before installation, it is recommended to compare the markings with the data in the specifications and check the socket for signs of overheating or corrosion. In case of expanding or modernizing the electrical system, it is advisable to consult a broader discussion on the role of control elements in vehicles, available in our advice section. For example, the impact of functional components on the reliability of the powertrain and auxiliary systems is described in the article: how the cooling system and related components affect engine lifespan.

If you are looking for other components from the electrical control group, also check out our Relays category, where you will find a wide selection of components compatible with various BMW models and other brands, with clear technical specifications to facilitate part selection.