Ford Transit MK8 Tail Light Lamp Bulb Holder Rear Right O/S BK31-13N004-AB

Ford Transit MK8 Tail Light Lamp Bulb Holder Rear Right O/S is an original lighting system component designed for the right rear lamp of the popular Ford commercial vehicle. Thanks to its factory-standard design, it ensures secure bulb mounting, stable electrical connections, and proper operation of the position and brake lights. It is a practical solution for users looking to restore full functionality to their rear lighting following a collision, contact corrosion, or damage to the holder.

Specifications and technical data

• SKU: BK31-13404-AG-1
• Mark: Ford
• Condition: Used
• OEM Part Number: BK31-13404-AG
• Substitutable numbers: BK31-13404-AG, BK3113404AG, 1870425, BK31-13N004-AB, BK3113N004AB
• Location on the vehicle: Rear, Right
• Category: Rear Light Assemblies

Purpose and function in the lighting system

The bulb holder is dedicated to the right side of the rear lamp in the Ford Transit MK8 and is an integral part of the Rear lights and brake lights category. It is responsible for:

• stable seating of bulbs in the lamp housing,
• reliable transmission of electrical signals to individual light points,
• maintaining the correct position of bulbs relative to the reflectors and lens.

A properly selected holder reduces the risk of flickering lights, overheating contacts, and technical inspection issues resulting from malfunctioning rear lighting.

Construction and fitment for Ford Transit MK8

The component has been designed as part of the Ford lighting system, which translates into a precise fit with the rear lamp on the right side. The design of the holder accounts for:

• factory mounting points in the lamp body,
• the bulb socket layout specified by the manufacturer,
• an electrical connector matched to the vehicle's wiring.

As a result, installation is straightforward, without the need for wiring modifications or makeshift solutions, which is particularly important for commercial vehicles in daily use.

Vehicle placement and installation aspects

The holder is intended for installation in the rear right lamp, which facilitates clear identification during repairs. In practice, this means that it:

• fits the specific side of the vehicle,
• allows for the preservation of the original wiring and harness layout,
• simplifies service when only one side of the lighting is being replaced.

Such fitment is beneficial for both workshops and fleet users who expect installation repeatability and reduced vehicle downtime.

Product characteristics and condition

The bulb holder comes from the original Ford line, which helps maintain compatibility with the factory electrical installation and lamp operating parameters. The product is in used condition, allowing for an economical repair while maintaining compliance with the vehicle manufacturer's specifications. For many users of Transit commercial vehicles, this is a reasonable compromise between cost and functionality.

Benefits of using an original holder

Using this holder in a Ford Transit MK8 allows you to:

• restore full efficiency of rear and brake lights after lamp damage,
• maintain compliance with the factory lighting system design,
• minimize the risk of diagnostic and light control issues,
• reduce installation time thanks to a predictable fit.

For vehicles used in transport, courier services, or maintenance work, functional rear lighting has a direct impact on safety and operational continuity.

If you are planning a comprehensive repair or upgrade of the rear lighting zone in your Ford and need other components from the same group, such as lenses, lamp modules, or additional holders, check out the available parts in the Ford rear lights and brake lights category.

For drivers interested in a broader perspective on lighting upgrades and the use of used parts in passenger cars, the article on the evolution of sports compacts may be helpful – you can find it here: Hot-hatch legend: the evolution of the VW Golf GTI from Mk1 to Mk8 – design changes and VW car parts.