Headlight Housing W166 GLS Xenon for Mercedes-Benz GLS-CLASS

The Headlight Housing W166 GLS Xenon is a high quality replacement component designed for Mercedes Benz GLS-Class SUV models based on the X166 platform from 2016 to 2019 that are equipped with Bi Xenon or ILS xenon headlights. It is intended to replace a damaged or cracked original xenon headlight body while retaining your existing lens, xenon projector, bulbs, and electronic control units.

This product is supplied as the housing only, no lens is included. You reuse the original clear lens and internal xenon or ILS components where they are still in good condition. The housing restores correct mounting, sealing, and structural support for the headlight assembly without any modification to the vehicle. Sold per side, choose left or right to match the vehicle.

Key Features:

• OEM-Style Design: Engineered to match the original Mercedes Benz W166 or X166 GLS xenon headlight housing for accurate fitment.

• Housing Only: Supplied without lens, xenon projector, D1S or D3S bulb, igniter or ballast, DRL driver, AFS or levelling modules, rear covers, or wiring, these are transferred from the original unit where serviceable.

• Durable Construction: Manufactured from automotive grade plastic to withstand heat, vibration, and daily driving conditions.

• Precise Fitment: Uses factory mounting points and brackets for straightforward installation and correct alignment with bumper, fender, and bonnet lines.

• Proper Sealing Surfaces: Restores the integrity of gasket and sealing interfaces to help reduce moisture and condensation when correctly assembled with good seals and vents.

• Repair Focused Solution: Ideal for vehicles with cracked or broken housings where the lens and internal xenon or ILS components can be reused, helping to keep repair costs under control.

Compatibility:
Suitable for Mercedes Benz GLS-Class models equipped with factory Bi Xenon or ILS xenon headlights:

• GLS-Class SUV (X166) facelift, approximately 2016 to 2019

Additional notes:

• Intended for xenon or ILS type headlamps as fitted from the factory on GLS X166 models.

• Not suitable for full LED or halogen headlamp versions and not suitable for earlier GL-Class pre facelift lamps.

• Fitment may vary depending on exact headlight option, always match the housing to the existing headlight on the vehicle and confirm with VIN.

Related Part Numbers:
Compatible with the corresponding OEM W166 and X166 xenon or ILS headlight housing part numbers for Mercedes Benz GLS-Class. Complete xenon lamp families commonly fall within ranges such as A166 906 xx xx for left and A166 907 xx xx for right, with suffixes depending on variant and market. Always confirm using your VIN and the markings on your original headlight before ordering.

Why Choose TOParts:
TOParts supplies Mercedes Benz replacement components engineered for precise fitment, reliability, and professional repair results. Our parts are selected to support workshop quality repairs and long term vehicle dependability while helping you avoid the high cost of complete headlamp replacement.

Q&A:

Q1: Does this include the headlight lens?
A1: No, this product is the housing only. The clear lens, xenon projector, bulbs, and electronic control units must be transferred from your original headlight or purchased separately.

Q2: Can I reuse my existing xenon lens and components?
A2: Yes, provided they are undamaged and compatible, you can reuse your original lens, xenon projector, bulbs, ballast or igniter, DRL driver, and control units with this housing.

Q3: Is this a direct replacement for the original xenon housing?
A3: Yes, it is designed as a direct fit replacement that uses the same mounting points and general layout as the factory Mercedes Benz W166 or X166 GLS xenon headlight housing.

Q4: Does this fit all GLS W166 or X166 models?
A4: It is intended for Mercedes Benz GLS-Class X166 models that were factory fitted with Bi Xenon or ILS xenon headlights, approximately 2016 to 2019. It does not fit halogen or full LED versions. Always confirm compatibility with your VIN and existing headlight type before purchase.

Q5: Are bulbs, xenon modules, or control units included?
A5: No, bulbs, xenon modules, ballasts or igniters, DRL drivers, control units, rear covers, and wiring are not included and must be transferred from the existing headlight assembly or sourced separately.