BMW E60 E63 E87 E90 E91 4X Relay Make Contact White Green Set 8373700

BMW E60 E63 E87 E90 E91 4X Relay Make Contact White Green Set is a set of four factory relays used in the BMW electrical system, designed for E60, E63, E87, E90, and E91 series models. These components ensure stable circuit switching and are structurally matched to the original sockets in BMW fuse boxes. Thanks to their characteristic green housing, they are easy to identify during diagnostics and service.

Specifications and technical data

• SKU: 8373700-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8373700
• Substitutable numbers: 61368373700, 8373700, 61319057005613113782971263171497661368366600, 9057005137829717149768366600, 61361378238126317354246131145957761311350315, 1378238173542414595771350315, 613601412296131137830161360153636, 014122913783010153636, 61360141229, 0141229, 54347025596, 7025596, 61360153636, 0153636, 61311459577, 1459577, 61361378238, 1378238, 61311378297, 1378297, 61311350315, 1350315, 61368366600, 8366600, 12631735424, 1735424, 61319057005, 9057005, 12631714976, 1714976, 61311378301, 1378301
• Color: Green
• Category: Relays

Application and function in the BMW electrical system

The set of four Tyco relays in this offer operates in circuits controlling various electrical consumers in BMW vehicles, such as comfort modules, auxiliary systems, or selected equipment components. The relay acts as an electrical "switch" that uses a low control current to switch higher-load circuits, thereby protecting sensitive control electronics.

Properly selected electrical parameters and a design compliant with the BMW standard allow for maintaining the correct operating characteristics of the systems, limiting voltage drops, and reducing the risk of contact overheating. Using four identical elements in one set facilitates the simultaneous replacement of several relays in critical circuits, which is particularly beneficial during preventive maintenance of the installation.

Design, color, and component identification

The relays in the set have a compact green housing, which makes them easy to quickly recognize in the relay and fuse box. The uniform color scheme allows the mechanic or user to efficiently compare them with removed parts and minimizes the risk of errors during installation.

The housing is made of material resistant to typical operating conditions in the engine compartment or inside the vehicle, such as elevated temperatures and vibrations. The contacts used are adapted for multiple switching cycles, which translates into stable system operation over a long period of use.

Compatibility and interchangeable numbers

The offered set of relays is intended for BMW vehicles from the E60, E63, E87, E90, and E91 series, where Tyco elements with corresponding electrical parameters are used. The product has a dedicated OEM part number and an extensive list of interchangeable numbers, which facilitates clear identification in catalogs and service software.

Due to the presence of many reference numbers, the relays can be used as replacements in various equipment configurations, provided they comply with the technical documentation of the specific vehicle. This solution is particularly useful in professional workshops where the ability to quickly match parts to a given VIN is important.

Condition, advantages of the 4x set, and service application

The items come from the secondary market, which allows for an economical replacement of relays while maintaining the original BMW specification. The set of four pieces enables the simultaneous replacement of several relays in frequently loaded circuits, which is recommended when periodic problems with the power supply of selected vehicle functions occur.

The main benefits of using this set include:

• maintaining the original operating characteristics of the BMW electrical system,
• consistency of components – all relays come from the same Tyco product group,
• easy identification thanks to the uniform green housing,
• possibility of preventive replacement of several relays in one service approach.

Service expansion within BMW Relays

If you are planning a comprehensive repair or upgrade of the electrical system area in your BMW and need other elements from the same group, such as starter relays, light relays, or fan relays, check the available parts in the BMW Relays category.

Substantive support and selection of used components

When selecting used electrical components, it is worth paying attention to the compliance of markings, load type, and purpose in a given BMW model. A good practice is to compare the removed element with the offered relay in terms of design, number and layout of pins, and application in the relay box.

If you want to better understand how to effectively use dismantled parts and what to pay attention to when buying used components, the guide article on replacing body parts with used parts and assessing their quality may be helpful, the tips of which are also useful for the general approach to secondary market components.