BMW F20 F21 Side Panel Light Lamp Bulb Holder Socket Rear Left N/S 7315199

Visual condition of the part

The product shows signs of use visible in the photos.

BMW F20 F21 Side Panel Light Lamp Bulb Holder Socket Rear Left N/S is an original rear lighting system component designed for installation on the left side of the 1 Series hatchback body. Thanks to its factory design, it ensures proper bulb seating, stable electrical connections, and compatibility with the BMW electrical system, which translates into safe and clear signaling of maneuvers on the road.

Specifications and technical data

• SKU: 7315199-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7315199
• Substitutable numbers: 7315199, 63217315199
• Location on the vehicle: Rear, Left
• Category: Light Bulbs & LEDs

Purpose and function of the bulb holder

The presented socket is a component of the driver-side rear lamp assembly, responsible for the mechanical retention of the bulbs and their electrical connection to the vehicle's wiring harness. The design was developed specifically for the BMW F20/F21 series, which guarantees:

• proper routing of current paths for individual lighting functions,
• correct positioning of bulbs relative to the reflectors and the lamp lens,
• stable contacts that minimize the risk of circuit interruption.

As a result, the rear light system maintains factory lighting parameters, and the turn signal, position light, or brake light remain clearly visible to other road users.

Construction and fitment for BMW systems

The bulb holder was designed as part of the LED lamps and lights system in BMW, taking into account the specific shape of the lamp and the cable routing method. The appropriate shaping of the housing and mounting points allows for:

• trouble-free installation in the rear lamp housing on the left side,
• proper arrangement of connectors and wires without tension,
• maintaining the tightness of the lamp assembly after correct installation.

Its original BMW origin means that the socket works with the factory electrical harness without the need for modifications, which is important for both safety and the correct operation of the vehicle's control systems.

Performance characteristics and installation

The component is intended for installation in the rear, left part of the vehicle, in place of the factory socket. In practice, this means:

• the possibility of use as a replacement for a damaged or overheated socket,
• maintaining the original lighting layout without interfering with the installation,
• easier diagnostics of potential lighting faults thanks to the factory contact layout.

Proper fitment to the lamp and wiring reduces the risk of contact looseness, which could cause flickering lights or error messages on the dashboard.

Benefits of using an original BMW socket

Choosing an original bulb holder for the BMW F20/F21 allows you to maintain the integrity of the entire lighting system. Key advantages include:

• factory compatibility with the lamp and electrical installation,
• maintenance of the lighting parameters specified by the manufacturer,
• reduction of the risk of lighting control problems by the vehicle's electronics.

For users who want to better understand the importance of correctly selected lighting components and the differences between LED and Xenon solutions, the following article will be helpful: Seeing more and better – a complete guide to selecting and replacing used LED and Xenon headlights.

BMW rear lighting zone and selection of other components

If you are planning a comprehensive repair or upgrade of the rear lighting zone in your BMW and need other components from the same group, such as combination lamps, control modules, or additional mounting elements, check the available parts in the BMW LED lamps and lights category.

When selecting used, original lighting components and other sub-assemblies, it is also worth paying attention to the impact of such parts on the vehicle's subsequent value – this is discussed in more detail in the material: Original used parts vs. resale price – how not to lose money?.