Headlight Lens W164 for Mercedes-Benz GL-CLASS

Replacement clear polycarbonate headlamp lens for the first-generation Mercedes-Benz GL-Class (X164). Precisely moulded to OE geometry to restore optical clarity and sealing when your original lens is cracked, yellowed or crazed. Sold per side — choose Left or Right.

What this is / isn’t:

• Included: 1× clear outer lens  (lens only).

Key Features:

• OE-Accurate Profile: Correct curvature and edge flange for a clean bond to GL X164 housings.

• Optical Clarity: UV-stabilised polycarbonate maintains sharp beam cutoff and factory DRL appearance.

• Seal-Ready: Smooth perimeter for reliable resealing using automotive butyl or PU headlight sealant.

• Cost-Effective: Keep your working internals; renew only the outer lens.

Compatibility:

• GL-Class (X164) — 2007–2012 (pre-facelift and facelift use different lamp internals; lens outline may vary by market—match visually and check by VIN).
  Not for ML-Class W164 or later GLS (X166).

Related Part Number Ranges (cross-refs):
Complete X164 lamp families commonly fall under A164/166-906-xx-xx (LH) / A164/166-907-xx-xx (RH) depending on variant. Lens subcomponents have different suffixes — verify via VIN and the stamp on your existing lens.

What’s Included / Not Included:

• Included: 1× clear headlamp lens only, side-specific.

• Not included: Housing, optics, control modules, DRL/indicator boards, adjusters, gaskets, rear covers, or sealant.

Installation Notes (Pro Tips):

• Remove lamp; gently heat the perimeter (low-heat oven or careful heat gun) to soften factory adhesive.

• Separate lens; remove all old butyl/PU and test-fit before bonding.

• Use quality butyl rope (reworkable) or automotive PU (permanent). Clamp/tape evenly while curing.

• Ensure vent ports are clear; replace desiccant if fitted.

• After refit, check headlight aim and perform a light-mist leak test to confirm seal integrity.

• Beam pattern is set by the internal optics — the lens does not change RHD/LHD cutoff.

Why Choose TOParts:
OE-quality Mercedes components focused on fit, clarity and durable sealing — trusted by panel shops and Mercedes specialists across South Africa.

Q&A
Q1: Will a new lens stop condensation?
A1: Usually yes, provided the housing is clean, vents are open, and the new lens is bonded with the correct sealant.

Q2: Is adhesive included?
A2: No. Use automotive-grade butyl or PU headlight sealant.

Q3: Can this lens be used on ML-Class (W164) or GLS (X166)?
A3: No. Those platforms use different lamp shapes. This lens is for GL-Class X164 only.

Q4: Left or Right — how do I choose?
A4: Order the side that matches your damaged lamp. On right-hand-drive vehicles, Left = driver, Right = passenger. Verify against your VIN and lens outline.