BMW X3 E83 Rear Left N/S Light Lamp Bulb Holder Plug Socket Wiring 8373312

BMW X3 E83 Rear Left N/S Light Lamp Bulb Holder Plug Socket Wiring is an original rear lighting installation component designed for the precise connection of the lamp to the vehicle's electrical harness. Thanks to the factory-spec connector geometry and proper cable routing, it ensures stable power supply and correct communication between the lamp and the car's electronics. This is a practical solution for users who want to restore full lighting functionality without modifying the installation.

Specifications and technical data

• SKU: 3418439-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 3418439
• Substitutable numbers: 3418439, 63213418439, 3413451, 63213413451, 3414399, 63213414399, 8373312, 63213418437, 3418437, 63213414397, 3414397, 63213413957, 3413957, 63213405865, 3405865
• Location on the vehicle: Rear, Left
• Category: Light Bulbs & LEDs

Purpose and function in the vehicle

The presented cable with plug is a component of the rear lamp electrical system in the BMW X3 E83 model, mounted on the rear left side. It is responsible for safely transmitting power and control signals to the lamp, which translates into the proper operation of position lights, brake lights, or turn signals, depending on the specific lamp configuration.

The original connector design minimizes the risk of contact looseness, pin overheating, or accidental disconnection during vehicle operation. This is particularly important for cars used daily, where the stability of electrical connections affects driving safety and comfort.

Construction and compatibility with BMW installation

The cable has been designed in accordance with BMW standards for rear lighting installations, which means it fits the factory harness and lamp without the need for cutting, soldering, or using adapters. The connector used is prepared for operation in typical vehicle operating conditions – in areas exposed to vibrations, temperature changes, and moisture.

Since this is an element from the LED Lamps and Lights group, the cable works with the lighting system designed for specific electrical and diagnostic parameters of BMW. This helps avoid errors in the light control system and communication issues with control modules.

Service application and installation

This cable with plug is particularly useful in situations where:

• the factory connector at the lamp has been damaged (cracked housing, burnt pins, corrosion),
• the installation was previously repaired in a non-factory manner and requires restoration to an OEM-like state,
• a rear lamp replacement is necessary and a secure, matching electrical connection is required.

The original nature of the component facilitates installation – the cable can be plugged into the factory location, maintaining proper routing and mechanical strain relief. This limits the risk of subsequent failures resulting from cable tension or accidental snagging of the harness during service work in the trunk.

Benefits of using the original cable

Using the original cable with a plug for the rear lamp in the BMW X3 E83 allows for maintaining the consistency of the entire lighting system. Factory-spec connector fitment and cable length translate into proper installation layout and reduce the risk of faults resulting from makeshift repairs. This solution is particularly beneficial for users who want to keep their car at a factory-standard level, without compromising on safety and reliability.

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

More about selecting lighting and OEM parts

When working with the lighting system, it is worth paying attention to the selection of appropriate components to avoid installation errors and diagnostic problems. If you want to better understand how to select lighting elements in cars of this brand, including LED headlights and electrical accessories, the following article will be helpful: See more and better – a complete guide to selecting and replacing used LED headlights and Xenon.

If you are interested in the broader context of using original elements in cars and want to learn why used OEM components are often a reasonable choice in terms of cost and safety, take a look at this material: Quality assurance and OEM safety – why used original car parts are the best choice for your car?.